This set of computer modeling illustrations of Pluto’s moon Nix shows how the orientation of the moon changes unpredictably as it orbits the “double planet” Pluto-Charon.
Credit: NASA/ESA/M. Showalter (SETI)/G. Bacon (STScI)
Simulation of Pluto’s moon Nix sped up so that one orbit takes 2 seconds instead of 25 days.
Wobbling and tumbling end-over-end like a badly thrown football, Pluto’s moons are in a state of orbital chaos, say scientists. Analysis of data from NASA’s Hubble Space Telescope shows that two of Pluto’s moons, Nix and Hydra, wobble unpredictably. If you lived on either, you’d never know when and in what direction the Sun would rise. One day it would pop up over your north horizon, the next over the western. Every sunset would be like a proverbial snowflake — not a single one the same.
Watch the video, and you’ll see what I mean. Not only does the moon totter, but the poles flip. If there was ever a solar system body to meet the criteria of end-of-the-world, doomsday crowd, Nix is it. The moons wobble because they’re embedded in the bizarro gravity field of the Pluto-Charon duo. Charon is officially the dwarf planet’s largest moon, but the two bodies act more like a double planet because Charon’s so huge.
OK, it’s only 750 miles (1,212 km) in diameter, but that’s half as big as Pluto. Imagine if our moon was twice as big as it is now, and you get the picture.
Charon is large compared to Pluto, so they orbit about their common center of gravity located in the space between the two bodies. Credit: Wikipedia
As the duo dances an orbital duet about their common center of gravity, their variable gravitational field sends the smaller moons tumbling erratically. The effect is enhanced even more by their irregular and elongated shapes. It’s likely Pluto’s other two moons, Kerberos and Styx, are in a similar situation.
Because their moment to moment motions are essentially unpredictable, scientists describe their behavior is chaotic. Saturn’s moon, Hyperion, also tumbles chaotically.
Pluto (upper right) and its largest moon Charon form a “double planet” as seen in this photo taken by NASA’s New Horizons probe which is set to make a close flyby of the Pluto system on July 14. Credit: NASA / NASA / Johns Hopkins University Applied Physics Laboratory / Southwest Research Institute
The discovery was made by Mark Showalter of the SETI Institute and Doug Hamilton of the University of Maryland using the Hubble Space Telescope and published in today’s issue of the journal Nature. Showalter also found three of Pluto’s moons are presently locked together in resonance, meaning there’s a precise ratio for their orbital periods.
“If you were sitting on Nix, you would see that Styx orbits Pluto twice for every three orbits made by Hydra,” said Hamilton.
That’s not all. If you’ve ever grilled with charcoal, you’d have a good idea what Kerberos looks like. Dark as one those briquettes. The other moons are as bright as sand because they’re mostly made of ice. Astronomers had thought that material blasted off the moons by meteorite impacts should make them all the same basic tone, so what’s up with Kerberos? No one knows.
This illustration shows the scale and comparative brightness of Pluto’s small satellites. The surface craters are for illustration only and are not real. Credits: NASA/ESA/A. Feild (STScI)
Pluto’s moons are thought to have formed during a collision long ago between the dwarf planet and a similar-sized object. The smash-up created lots of smaller bodies that eventually took up orbits about the present-day Pluto. Outside of Charon, the biggest leftover, the other moons measure in the tens of miles across. The four little ones — Nix, Styx, Kerberos and Hydra — were discovered with the Hubble scope during surveys to better map the Pluto system before New Horizons arrives next month. No one would be surprised if even more itty-bitty moons are found as we draw ever closer to the dwarf planet.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
SpaceX Falcon 9 is now certified for USAF launches. SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
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The U.S. Air Force announced Tuesday that they have certified SpaceX to launch the nations critical and highly valuable national security satellites on the firms Falcon 9 rocket, thereby breaking the decade old launch monopoly held by launch competitor United Launch Alliance (ULA). ULA is a joint venture owned by aerospace giants Boeing and Lockheed Martin.
The Air Force’s goal in approving the SpaceX Falcon 9 booster is aimed at drastically cutting the high cost of access to space by introducing competition in the awarding of military mission launch contacts. The prior contract involved a sole source $11 Billion “block buy” bid for 36 rocket cores from ULA in December 2013 which was legally challenged by SpaceX in April 2014, but eventually settled by SpaceX in an agreement with the USAF earlier this year.
Lieutenant General Samuel Greaves, Commander of the Air Force Space and Missile Systems Center (SMC), announced the long awaited decision on Tuesday, May 26.
The certification milestone came after a grueling two year review process in which the Air Force invested more than $60 million and 150 people to thoroughly review all aspects of the Falcon 9 booster. The review was based on three successful flights by the Falcon 9 v1.1 which first launched in late 2013.
The purpose of certification is to assure that qualified launch providers could meet the challenge of safely, securely and reliably lofting expensive U.S. national security military missions to space and into their intended orbits with full mission capability that are critical for maintaining national defense.
“The SpaceX and SMC teams have worked hard to achieve certification,” said Greaves, Commander of the Air Force Space and Missile Systems Center (SMC) and Air Force Program Executive Officer for Space, in a statement.
“And we’re also maintaining our spaceflight worthiness process supporting the National Security Space missions. Our intent is to promote the viability of multiple EELV-class launch providers as soon as feasible.”
And the competitive launch races “for award of qualified national security space launch missions” between SpaceX and ULA start very soon, within the next month says the USAF.
In June, the Air Force will issue a Request for Proposal (RFP) for GPS III launch services. ULA has three GPS launches in its manifest for 2015.
Of course SpaceX was overjoyed on hearing the certification news.
“This is an important step toward bringing competition to National Security Space launch, said Elon Musk, SpaceX CEO and Lead Designer.
‘We thank the Air Force for its confidence in us and look forward to serving it well.”
Until today, ULA has held a launch monopoly over military missions since the company was founded in 2006. ULA also launches many NASA science missions, but very few commercial satellites.
Thus the U.S. military and NASA provide the core of ULA’s business and the source of much of its income and profits.
SpaceX is now certified by the Air Force for the right to compete for US national security satellites launches using Falcon 9 rockets such as this one which successfully launched the SES-8 communications satellite on Dec. 3, 2013 from Pad 40 at Cape Canaveral, FL. Credit: Ken Kremer/kenkremer.com
“This is a very important milestone for the Air Force and the Department of Defense,” said Secretary of the Air Force Deborah Lee James, in a statement.
“SpaceX’s emergence as a viable commercial launch provider provides the opportunity to compete launch services for the first time in almost a decade. Ultimately, leveraging of the commercial space market drives down cost to the American taxpayer and improves our military’s resiliency.”
Other military spacecraft in the future could involve vehicles such as the X-37B space plane which recently launched on an Atlas V, as well as weather satellites, signals intelligence and missile warning satellites and a range of top secret missions for the National Reconnaissance Office (NRO) that have been routinely launched by ULA with a 100% success rate to date.
USAF X-37B orbital test vehicle launches atop United Launch Alliance Atlas V rocket on May 20, 2015 on OTV-4 mission. Credit: Alex Polimeni
ULA’s stable of launchers includes the Atlas V and Delta IV families of vehicles. ULA is phasing out the Delta IV due to its high costs. Only the Delta IV Heavy will remain in service as required to launch the very heaviest satellites that cannot be accommodated by less powerful rockets.
ULA is also replacing the Atlas V with the partly reusable new Vulcan rocket, that will be phased in starting in 2019 using American-made engines from either Blue Origin or Aerojet Rocketdyne.
The Atlas V uses Russian made RD-180 engines, who’s use has become highly contentious since the deadly crisis in Ukraine erupted in 2014.
The ensuing threats of RD-180 engine embargoes and imposition of sanctions and counter sanctions imposed by the US and Russia have thus placed US national security at risk by being dependent on a rocket with foreign made engines whose future supply chain was uncertain.
U.S. Senator John McCain (R-AZ), Chairman of the Senate Armed Services Committee, has been highly critical of the ULA dependence on the Russian RD-180 engines and issued this statement in response to the Air Force announcement.
“The certification of SpaceX as a provider for defense space launch contracts is a win for competition, said McCain.
“Over the last 15 years, as sole-source contracts were awarded, the cost of EELV was quickly becoming unjustifiably high. I am hopeful that this and other new competition will help to bring down launch costs and end our reliance on Russian rocket engines that subsidizes Vladimir Putin and his cronies.”
A United Launch Alliance Atlas V 421 rocket is poised for blastoff at Cape Canaveral Air Force Station’s Space Launch Complex-41 in preparation for launch of NASA’s Magnetospheric Multiscale (MMS) science mission on March 12, 2015. Credit: Ken Kremer- kenkremer.com
Overall the Air Force “invested more than $60 million and 150 people in the certification effort which encompassed 125 certification criteria, including more than 2,800 discreet tasks, 3 certification flight demonstrations, verifying 160 payload interface requirements, 21 major subsystem reviews and 700 audits in order to establish the technical baseline from which the Air Force will make future flight worthiness determinations for launch.”
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
Release of SpaceX-6 Dragon on May 21, 2015 from the International Space Station for Pacific Ocean splashdown later in the day. Credit: NASA/Terry Virts
Release of SpaceX-6 Dragon on May 21, 2015 from the International Space Station for Pacific Ocean splashdown later in the day. Credit: NASA/Terry Virts Story updated with further details and photos[/caption]
SpaceX Dragons seem to be flying nearly everywhere these days, coming and going at a record pace to the delight and relief of NASA, researchers and the space faring crews serving aboard the International Space Station (ISS). As one Dragon returned to Earth from space today, May 21, another Dragon prepares to soar soon to space.
The commercial SpaceX-6 cargo Dragon successfully splashed down in the Pacific Ocean at 12:42 p.m. EDT (1642 GMT) today, Thursday, about 155 miles southwest of Long Beach, California, some five hours after it was released from the grip of the stations robotic arm this morning at 7:04 a.m. EDT by the Expedition 43 crew as the craft were flying some 250 miles (400 km) above Australia.
The ocean splashdown marked the conclusion to the company’s sixth cargo resupply mission to the ISS under a commercial contract with NASA. Overall this was the seventh trip by a Dragon spacecraft to the station since the inaugural flight in 2012.
Following the launch failure and uncontrolled destructive plummet back to Earth of the Russian Progress 59 cargo freighter earlier this month, the station and its six person international crews are more dependent than ever on the SpaceX commercial supply train to orbit to keep it running and humming with productive science.
Working from a robotics work station in the domed cupola, NASA astronaut Scott Kelly released the Dragon CRS-6 spacecraft from the grappling snares of the 57.7-foot-long (17-meter-long) Canadian-built robotic arm with help from fellow NASA astronaut Terry Virts. Kelly is a member of the first 1 Year ISS mission crew, along with Russian cosmonaut Mikhail Kornienko.
The capsule then performed an intricate series of three departure burns and maneuvers to move beyond the imaginary 656-foot (200-meter) “keep out sphere” around the station and begin its five and a half hour long trip back to Earth.
The station crew had packed Dragon with almost 3,100 pounds of NASA cargo from the International Space Station. The including research samples pertaining to a host of experiments on how spaceflight and microgravity affect the aging process and bone health as well as no longer need items and trash to reduce station clutter.
The SpaceX Dragon cargo spacecraft was released from the International Space Station’s robotic arm at 7:04 a.m. EDT Thursday. The capsule then performed a series of departure burns and maneuvers to move beyond the 656-foot (200-meter) “keep out sphere” around the station and begin its return trip to Earth. Credits: NASA TV
“Spaceflight-induced health changes, such as decreases in muscle and bone mass, are a major challenge facing our astronauts,” said Julie Robinson, NASA’s chief scientist for the International Space Station Program Office at NASA’s Johnson Space Center in Houston, in a statement.
“We investigate solutions on the station not only to keep astronauts healthy as the agency considers longer space exploration missions but also to help those on Earth who have limited activity as a result of aging or illness.”
The Dragon was retrieved from the ocean by recovery boats following the parachute assisted splashdown. It will be transported to Long Beach, California for removal and return of the NASA cargo. The capsule itself will be shipped to SpaceX’s test facility in McGregor, Texas, for processing to remove cargo and inspection of its performance.
Dragon splashes down into the Pacific Ocean, carrying 3,100 lbs of cargo and science for NASA on May 21, 2015, Credit: SpaceX.
“The returning Space Aging study, for example, examines the effects of spaceflight on the aging of roundworms, widely used as a model for larger organisms,” noted NASA in a statement.
“By growing millimeter-long roundworms on the space station, researchers can observe physiological changes that may affect the rate at which organisms age. This can be applied to changes observed in astronauts, as well, particularly in developing countermeasures before long-duration missions.”
Dragon departed after having spent a record setting stay of 33 days berthed to the station at an Earth facing port on the Harmony node.
Dragon is also the only current US means for sending cargo to the station after the loss of the Orbital Sciences Cygnus craft in the Antares rocket explosion last October.
The SpaceX CRS-6 Dragon successfully blasted off atop a Falcon 9 booster from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT (2010:41 GMT) on the CRS-6 (Commercial Resupply Services-6) mission.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
The resupply vessel had arrived three days later on April 17 and was successfully snared by the Expedition 43 Flight Engineer Samantha Cristoforetti of the European Space Agency, the first female Italian astronaut.
Dragon launched on April 14 with more than 4,300 pounds of supplies, science experiments, and technology demonstrations, including critical materials to support about 40 of more than 250 science and research investigations during the station’s Expeditions 43 and 44.
An Espresso machine was also aboard and delivered to enhance station morale during the daily grind some 250 miles above Earth.
Among the research investigations were a fresh batch of 20 rodents for the Rodent Research Habitat, and experiments on osteoporosis to counteract bone deterioration in microgravity, astronaut vision loss, protein crystal growth, and synthetic muscle for prosthetics and robotics.
CRS-6 marks the company’s sixth operational resupply mission to the ISS under a $1.6 Billion contract with NASA to deliver 20,000 kg (44,000 pounds) of cargo to the station during a dozen Dragon cargo spacecraft flights through 2016 under NASA’s original Commercial Resupply Services (CRS) contract.
Following the complete success of the SpaceX Dragon CRS-6 mission, NASA just announced that the next SpaceX Dragon is currently slated to launch on June 26 at 11:09 a.m. EDT.
The Dragon will carry critical US equipment enabling docking by the SpaceX Crew Dragon and Boeing CST-100 astronaut transporters.
Read Ken’s earlier onsite coverage of the CRS-6 launch from the Kennedy Space Center and Cape Canaveral Air Force Station.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
Video caption: SpaceX CRS-6 Falcon 9 Launch to the International Space Station on April 14, 2015. Credit: Alex Polimeni
The International Space Station as seen by the departing STS-134 crew aboard space shuttle Endeavour in May 2011. Credit: NASA
Russia and its International Space Station (ISS) partners have prudently decided to postpone the scheduled upcoming crew rotations, involving departures and launches of station crews, in the wake of the failure of the Russian Progress 59 freighter that spun out of control soon after blastoff on April 28 and was destroyed during an uncontrolled plummet back to Earth on Friday, May 8.
The schedule shifting, whose possibility was reported here over the weekend and confirmed on Tuesday, May 12 by NASA and Roscosmos, literally came barely a day before the planned return to Earth on Wednesday, May 13 of the three person crew comprising of NASA astronaut and current station commander Terry Virts and flight engineers Samantha Cristoforetti of ESA (European Space Agency) and Anton Shkaplerov of Roscosmos. The trio have been working and living aboard the complex since November 2014.
The return of Virts, Cristoforetti and Shkaplerov is now targeted for early June, according to official statements from NASA, ESA and Roscosmos, the Russian space agency. That’s about a month later than the originally planned 171 day mission, in the wake of the failed Progress cargo ship that burned up on reentry.
Although an exact date has not been specified, sources indicate a tentative return target of around June 11.
“The partner agencies agreed to adjust the schedule after hearing the Russian Federal Space Agency’s (Roscosmos) preliminary findings on the recent loss of the Progress 59 cargo craft,” said NASA in a statement. “The exact dates have not yet been established, but will be announced in the coming weeks.”
If that new return date holds, ESA’s Samantha Cristoforetti will become the woman to fly the longest in space, eclipsing the current record holder, NASA astronaut Sunita Williams.
Engineer Samantha Cristoforetti of the European Space Agency in Star Trek uniform as Dragon arrives at the International Space Station on April 17, 2015. Credit: NASA
Blastoff of their replacement crew on the next planned manned Soyuz launch on May 26 from the Baikonur Cosmodrome in Kazakhstan has also been delayed, for about two months most likely to late July. That Expedition 44 crew comprises Russian cosmonaut Oleg Kononenko, Japanese astronaut Kimiya Yui and NASA astronaut Kjell Lindgren.
A rotating international crew of six astronauts and cosmonauts currently serve aboard the ISS. The delayed return of Virts crew from Expedition 43 will lessen the time when the ISS is staffed by a reduced crew of three, which significantly dampens the time allotted to science research.
A Russian state commission investigation board appointed by Roscosmos, is still seeking to determine the cause of the Progress 59 malfunction which occurred right around the time of the separation from its Soyuz-2.1A carrier rockets third stage following blastoff from the Baikonur space center in Kazakhstan.
File photo of a Russian Progress cargo freighter. Credit: Roscosmos
A preliminary accident report from the state commission was planned for May 13. But investigators need more time to determine the root cause of the Progress 59 (also known as Progress M-27M) mishap.
Soon after detaching from the rockets third stage, it began to spin out of control at about 1.8 times per second, as seen in a video transmitted from the doomed ship.
NASA astronaut Scott Kelly and Russian cosmonauts Mikhail Kornienko and Gennady Padalka will remain aboard the station after the Virts crew returns to begin Expedition 44.
Roscosmos is also working to speed up the launch of the next unmanned Progress 60 (M-28M), potentially from August to early July. But that hinges on the outcome of the state commission investigation.
File photo of a Russian Progress cargo freighter. Credit: Roscosmos
The 7 ton Progress vehicle was loaded with 2.5 tons of supplies for the ISS and the six person Expedition 43 crew. Items included personal mail for the crew, scientific equipment, food, water, oxygen, gear and replaceable parts for the station’s life support systems.
NASA officials say that the current ISS Expedition 43 six person crew is in no danger. The station has sufficient supplies to last until at least the fall of 2015, even if no other supplies arrive in the meantime.
Also in the mix is the launch of NASA’s next contracted unmanned Dragon cargo mission by commercial provider SpaceX on the CRS-7 flight. Dragon CRS-7 had been slated for liftoff no earlier than June 19. But that date could slip as well.
The Dragon will carry critical US equipment enabling docking by the SpaceX Crew Dragon and Boeing CST-100 astronaut transporters.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
File photo of a Russian Progress cargo freighter. Credit: Roscosmos
File photo of a Russian Progress cargo freighter. Credit: Roscosmos Story updated with further details[/caption]
The spinning, out-of-control Russian Progress 59 cargo freighter met its undesired early demise when it fell from orbit early Friday, May 8, and was destroyed during the unplanned fiery plummet through the Earth’s atmosphere.
As a result of the loss of the unmanned Progress 59 spacecraft, which was bound for the International Space Station (ISS) on a routine resupply mission, the timelines of upcoming crew rotations and new launches are “under evaluation” – Universe Today learned according to Russian and American space sources.
The doomed Progress freighter “ceased to exist” after it reentered the Earth’s atmosphere 05.04 Moscow time on May 8, 2015 (10:04 p.m. EDT May 7) over the central Pacific Ocean,” according to an official statement from Roscosmos, the Russian Space Agency.
The consequences of the failure might cause “postponements of upcoming station crew changes to June” and blastoffs “to July” according to Russian space industry and media sources.
The vessel, also known as Progress M-27M, burned up minutes later and any surviving pieces fell over the Pacific Ocean.
“Debris fell about 900 kilometers west of the Marquesas Islands in the central Pacific Ocean,” a space industry source told the Russian news agency TASS.
“Roscosmos plans to adjust the program of flights to the International Space Station (ISS) due to the recent accident involving the Progress M-27M spacecraft,” according to the TASS rocket and space industry source.
Roscosmos quickly established an investigation board to determine the cause of the Progress failure and any commonalities it might have with manned launches of the Soyuz rocket and capsule, and report back by 13 May.
“The results of investigation of the incident related to “Progress M-27M” will be presented no later than 13 May following the completion of the state commission,” Roscosmos stated.
Russian mission controllers lost control of the Progress 59 spacecraft shortly after its otherwise successful launch to the ISS on April 28 from the Baikonur space center in Kazakhstan atop a Soyuz-2.1A carrier rocket.
Soon after detaching from the rockets third stage, it began to spin out of control at about 1.8 times per second, as seen in a video transmitted from the doomed ship.
After control could not be reestablished, all hope of docking with the ISS was abandoned by Roscosmos.
NASA officials said that the current ISS Expedition 43 six person crew is in no danger. The station has sufficient supplies to last until at least September, even if no other supplies arrive in the meantime.
“The spacecraft was not carrying any supplies critical for the United States Operating Segment (USOS) of the station, and the break up and reenty of the Progress posed no threat to the ISS crew,” NASA said in a statement.
“Both the Russian and USOS segments of the station continue to operate normally and are adequately supplied well beyond the next planned resupply flight.”
There is a stock of propellants onboard in the Russian segment that can be used for periodically required station reboosts.
According to TASS, “the cause of the accident with the Russian Progress M-27M spacecraft has not been established yet, Russian Deputy Prime Minister Dmitry Rogozin told journalists on Friday.”
“Not yet,” he said, answering a question on whether causes of the accident had been established.
File photo of a Russian Progress cargo freighter. Credit: Roscosmos
Because the cause of Progress failure is not yet clear, the schedules for upcoming crew departures and launches to the ISS via Russian Soyuz rockets and capsules are “under evaluation,” according to sources.
There is a significant potential for a delay in the planned May 13 return to Earth of the three person crew international crew consisting of NASA astronaut and current station commander Terry Virts and flight engineers Samantha Cristoforetti of ESA (European Space Agency) and Anton Shkaplerov of Roscosmos, who have been aboard the complex since November 2014.
They comprise the current Expedition 43 crew, along with the recently arrived crew of NASA astronaut Scott Kelly and Russian cosmonauts Mikhail Kornienko and Gennady Padalka who launched onboard a Soyuz capsule on March 27.
Virts and his crewmates were due to head back to Earth in their Soyuz capsule on May 13. According to Russian sources, their return trip may be postponed to about June 11 to 13.
“The return from orbit of the expedition which is currently there is suggested to be postponed from May 14 to June,” said a TASS source.
Their three person replacement crew on Expedition 44 were due to blastoff on the next planned manned Soyuz launch on May 26 from the Baikonur Cosmodrome in Kazakhstan. This launch may now be delayed as well, to mid or late July.
“More time will be needed to check already manufactured rockets,” said a source. “A manned Soyuz launch may be made in the last ten days of July.”
“The proposal was forwarded by a Roscosmos working group and has not been approved yet,” reports TASS.
An official announcement by Roscosmos of any ISS schedule changes may come next week since the scheduled return of Virts crew is only days away.
Another potential change is that the launch of the next unmanned Progress 60 (M-28M), could potentially be moved up from August to July, hinging on the outcome of the state commission investigation.
To date flights of the Progress vehicle have been highly reliable. The last failure occurred in 2011, shortly after the retirement of NASA’s Space Shuttle orbiters in July 2011. The loss of the Progress did cascade into a subsequent crew launch delay later in 2011.
“There’s coffee in that nebula”… ehm, I mean… in that #Dragon. Engineer Samantha Cristoforetti of the European Space Agency in Star Trek uniform as Dragon arrives at the International Space Station on April 17, 2015. Credit: NASA
The 7 ton Progress vehicle was loaded with 2.5 tons of supplies for the ISS and the six person Expedition 43 crew. Items included personal mail for the crew, scientific equipment, food, water, oxygen, gear and replaceable parts for the station’s life support systems.
The next SpaceXFalcon 9 launch carrying the CRS-7 Dragon cargo ship on a resupply mission for NASA to the ISS is slated for mid-June. The most recent SpaceX Dragon was launched on the CRS-6 mission on April 14, 2015.
At this time the SpaceX CRS-7 launch remains targeted for liftoff on June 19, 2015.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
File photo of a Russian Progress cargo freighter. Credit: Roscosmos
Russia’s out-of-control Progress 59 cargo freighter is doomed to a fiery finale overnight Friday, May 8, according to Roscosmos, the Russian Space Agency.
The errant spaceship is expected to fall back to Earth and reenter the atmosphere early in the morning Moscow time following the latest orbital analysis by Roscosmos.
“The time window for the failed Progress spacecraft reentry in the Earth’s atmosphere was changed to a span between 01.13 a.m. and 04.51 a.m. Moscow time on May 8, according to Russia’s space agency Roscosmos,” according to the latest update today, May 7, from the Russian Sputnik news outlet.
According to a Roscosmos source, the unmanned Progress 59, also known as M-27M , would most likely make the atmospheric reentry over the Indian Ocean.
Roscosmos said in a statement that Progress 59 “will cease to exist” on Friday.
Most of the debris is expected to burn up. But any remaining fragments are likely to hit north of Madagascar.
Russian mission controllers lost control of the Progress 59 spacecraft ship – bound for the International Space Station (ISS) on a routine resupply mission – shortly after its otherwise successful launch on April 28 from the Baikonur space center in Kazakhstan atop a Soyuz-2.1A carrier rocket.
Soon after detaching from the rockets third stage, it began to spin out of control at about 1.8 times per second, as seen in a video transmitted from the doomed ship.
After control could not be reestablished, all hope of docking with the ISS was abandoned by Roscosmos.
Here’s a short video taken by the spinning Progress with NASA commentary:
The 7 ton vehicle was loaded with 2.5 tons of supplies for the ISS and the six person Expedition 43 crew. Items included personal mail for the crew, scientific equipment, as well as replaceable parts for the station’s life support systems and a stockpile of water and oxygen, according to Russia Today.
The Progress spacecraft is also loaded with a significant amount of fuel as it orbits Earth at an inclination of 51.6 degrees to the equator. This carries it over most of the populated world between 51.6 degrees north and south latitudes. But most of the area is over unpopulated oceans, making the chances of danger from falling debris very small.
The latest ground track reentry prediction for the Progress 59 (M-27M) spacecraft showing orbital path around Earth as of May 7, 2015. Note: subject to change. Credit: Aerospace Corp.
To date the Progress vehicle have been highly reliable. The last failure occurred in 2011, shortly after the retirement of NASA’s Space Shuttle orbiters in July 2011.
Roscosmos has established an investigation board to determine the cause of the Progress failure and any commonalities it might have with manned launches of the Soyuz rocket and capsule.
“The conclusions are to be made by May 13, 2015,” according to a Roscosmos statement.
The potential exists for a delay in the next planned manned Soyuz launch with a three person international crew later on May 26 from the Baikonur Cosmodrome in Kazakhstan.
The ISS crew is in no danger and has sufficient supplies to last until at least September.
Besides the Russian Progress cargo ship, the ISS is resupplied by the commercial US SpaceX Dragon and Orbital Sciences Cygnus vessels and the Japanese HTV. ESA’s ATV has been retired after 5 flights.
The next Falcon 9 launch carrying the CRS-7 Dragon cargo ship on a resupply mission for NASA to the ISS is slated for mid-June. The most recent Dragon was launched on the CRS-6 mission on April 14, 2015.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
The last Orbital Sciences launch of an Antares rocket with the Orb-3 Cygnus resupply ship ended in a catastrophic explosion just seconds after liftoff on October 28, 2014.
The ISS lifeline hangs by a delicate thread.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Base of Orbital Sciences Antares rocket explodes moments after blastoff from NASA’s Wallops Flight Facility, VA, on Oct. 28, 2014, at 6:22 p.m. Credit: Ken Kremer – kenkremer.com
The SpaceX Crew Dragon spacecraft ascends during Pad Abort Test on Wednesday, May 6 following a simulated emergency at the launch pad to test emergency escape system for astronauts. Credits: NASA
Soaring on the power of an octet of SuperDrago engines, SpaceX successfully completed a critical rapid fire life-saving test of their Dragon crew capsules pad abort emergency escape system that would ignite in a split second to save the astronauts lives in the unlikely event of a failure of the Falcon 9 booster rocket at the Cape Canaveral launch pad.
The uncrewed SpaceX Crew Dragon roared swiftly skywards upon ignition of the test vehicle’s integrated SuperDraco engines at 9 a.m EDT this morning, Wednesday, May 6, for the mile high test conducted from the SpaceX Falcon 9 launch pad from a specially built platform at Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida.
A human-sized crash test dummy was seated inside for the test exercise which ended safely with a parachute assisted Atlantic Ocean splashdown after less than two minutes. There were no astronauts aboard.
The SuperDraco engines fired for approximately six seconds and accelerated the crew Dragon “from 0 to 100 mph in 1.2 seconds. It reached a top speed of about 345 mph,” said SpaceX CEO Elon Musk in a post test briefing.
“This bodes quite well for the future of the program. I don’t want to jinx it, but this is really quite a good indication for the future of Dragon.” said Elon Musk.
“We hope to launch the first crews to the ISS within about two years, plus or minus six months.”
The side mounted escape engines mark a revolutionary change from the traditional top mounted launch escape system used previously in the Mercury, Apollo, Soyuz and Orion human spaceflight capsules. The space shuttle had no escape system beyond ejections seats used on the first four flights.
Dragon was mounted atop the finned trunk section for the test. The entire Dragon/trunk assembly was about 20 feet (5 meters) tall.
The test is a critical milestone towards the timely development of the human rated Dragon that NASA is counting on to restore the US capability to launch astronauts from US soil abroad US rockets to the International Space Station (ISS) as early as 2017.
“This is a critical step toward ensuring crew safety for government and commercial endeavors in low-Earth orbit,” said Kathy Lueders, manager of NASA’s Commercial Crew Program.
“Congratulations to SpaceX on what appears to have been a successful test on the company’s road toward achieving NASA certification of the Crew Dragon spacecraft for missions to and from the International Space Station.”
Here is a video of the Pad Abort Test:
Video caption: Powered by its SuperDraco engines, the uncrewed SpaceX Crew Dragon flies through its paces in the Pad Abort Test from Cape Canaveral Air Force Station in Florida. Credit: NASA
After all the monomethylhydrazine and nitrogen tetroxide hypergolic propellants were consumed, Dragon soared as planned to an altitude of about 1500 meters (.93 mi) above the launch pad. At about T+21 seconds the trunk was jettisoned and the spacecraft began a slow rotation with its heat shield pointed toward the ground again as it arced out eastwards over the ocean.
The drogue chutes and trio of red and white main parachutes deployed as planned for a picturesque Dragon splashdown in the Atlantic Ocean about a mile offshore of its Cape Canaveral launch pad. The capsule was retrieved from the ocean by waiting recovery boats.
Today’s pad abort demonstration tested the ability of the set of eight SuperDraco engines integrated directly into the side walls of the crew Dragon to ignite simultaneously and pull the vehicle away from the launch pad in a split second – in a simulated emergency to save the astronauts lives in the event of a real emergency.
Therefore the Pad Abort Test did not include an actual Falcon 9 booster since it was focused on a checkout of the capsule’s escape capability.
Sequence of May 6, 2015 SpaceX Pad Abort Test Flight in Four Frames. Credit: NASA
The SuperDraco engines are located in four jet packs built into the capsule around the base. Each engine produces about 15,000 pounds of thrust pounds of axial thrust, for a combined total thrust of about 120,000 pounds in under one second, to propel the astronauts safely away.
The entire test lasted less than two minutes.
The test was webcast live on NASA TV: http://www.nasa.gov/nasatv
The crew Dragon is outfitted with 270 sensors to measure a wide range of vehicle, engine, acceleration and abort test parameters.
The pad abort test was accomplished under SpaceX’s Commercial Crew Integrated Capability (CCiCap) agreement with NASA, that will eventually lead to certification of the Dragon for crewed missions to low Earth orbit and the ISS.
A second Dragon flight test follows later in the year, perhaps in the summer. It will launch from a SpaceX pad at Vandenberg Air Force Base in California and involves simulating an in flight emergency abort scenario during ascent at high altitude at maximum aerodynamic pressure (Max-Q) at about T plus 1 minute, to save astronauts lives.
The pusher abort thrusters would propel the capsule and crew safely away from a failing Falcon 9 booster for a parachute assisted splashdown into the ocean.
“This is what SpaceX was basically founded for, human spaceflight,” said Hans Koenigsmann, vice president of Mission Assurance with SpaceX, at a prelaunch briefing.
“The pad abort is going to show that we’ve developed a revolutionary system for the safety of the astronauts, and this test is going to show how it works. It’s our first big test on the Crew Dragon.”
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Hans Koenigsmann, vice president of Mission Assurance at SpaceX during CRS-6 mission media briefing in April 2015 at the Kennedy Space Center. Credit: Ken Kremer/kenkremer.com
SpaceX Pad Abort Test vehicle poised for May 6, 2015 test flight from SpaceX’s Space Launch Complex 40 (SLC-40) in Cape Canaveral, Florida. Credit: SpaceX
The test flight – called the Pad Abort Test – is slated for the early morning hours of Wednesday, May 6, if all goes well. The key facts and a timeline of the test events are outlined herein.
The test vehicle will reach roughly a mile in altitude (5000 feet, 1500 meters) and last only about 90 seconds in duration from beginning to end.
It constitutes a crucial first test of the crew capsule escape system that will save astronauts lives in a split second in the unlikely event of a catastrophic launch pad failure with the Falcon 9 rocket.
The May 6 pad abort test will be performed from the SpaceX Falcon 9 launch pad from a platform at Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. The test will not include an actual Falcon 9 booster.
SpaceX has just released new images showing the Dragon crew capsule and trunk section being moved to the launch pad and being positioned atop the launch mount on SLC-40. See above and below. Together the Dragon assembly stands about 20 feet (5 meters) tall.
SpaceX Pad Abort Test vehicle being transported at the Florida launch complex. Credit: SpaceX
A test dummy is seated inside. And SpaceX now says the dummy is not named “Buster” despite an earlier announcement from the company.
“Buster the Dummy already works for a great show you may have heard of called MythBusters. Our dummy prefers to remain anonymous for the time being,” SpaceX said today.
So, only time will tell if that particular mission fact will ever be revealed.
The test window opens at 7 a.m. EDT May 6 and extends until 2:30 p.m. EDT into the afternoon.
The webcast will start about 20 minutes prior to the opening of the window. NASA will also provide periodic updates about the test at their online Commercial Crew Blog.
The current weather forecast predicts a 70% GO for favorable weather conditions during the lengthy test window.
Since the Pad Abort Test is specifically designed to be a development test, in order to learn crucial things about the performance of the escape system, it doesn’t have to be perfect to be valuable.
And delays due to technical issues are a very significant possibility.
“No matter what happens on test day, SpaceX is going to learn a lot,” said Jon Cowart, NASA’s partner manager for SpaceX at a May 1 media briefing at the Kennedy Space Center press site. “One test is worth a thousand good analyses.”
The test is critical for the timely development of the human rated Dragon that NASA is counting on to restore the US capability to launch astronauts from US soil abroad US rockets to the International Space Station (ISS) as early as 2017.
Here’s a graphic illustrating the May 6 SpaceX Pad Abort Test trajectory and sequence of planned events.
Graphic illustrates the SpaceX Pad Abort Test trajectory and sequence of events planned for May 6, 2015 from Cape Canaveral launch complex 40. Credit: SpaceX
The Crew Dragon will accelerate to nearly 100 mph in barely one second. The test will last less than two minutes and the ship will travel over one mile in the first 20 seconds alone.
The pad abort demonstration will test the ability of a set of eight SuperDraco engines built into the side walls of the crew Dragon to pull the vehicle away from the launch pad in a split second in a simulated emergency to save the astronauts lives in the event of a real emergency.
The SuperDraco engines are located in four jet packs around the base. Each engine produces about 15,000 pounds of thrust pounds of axial thrust, for a combined total thrust of about 120,000 pounds, to carry astronauts to safety.
The eight SuperDraco’s will propel Dragon nearly 100 meters (328 ft) in 2 seconds, and more than half a kilometer (1/3 mi) in just over 5 seconds.
SpaceX likens the test to “an ejection seat for a fighter pilot, but instead of ejecting the pilot out of the spacecraft, the entire spacecraft is “ejected” away from the launch vehicle.”
Here’s a timeline of events from SpaceX:
T-0: The eight SuperDracos ignite simultaneously and reach maximum thrust, propelling the spacecraft off the pad.
T+.5s: After half a second of vertical flight, Crew Dragon pitches toward the ocean and continues its controlled burn. The SuperDraco engines throttle to control the trajectory based on real-time measurements from the vehicle’s sensors.
T+5s: The abort burn is terminated once all propellant is consumed and Dragon coasts for just over 15 seconds to its highest point about 1500 meters (.93 mi) above the launch pad.
T+21s: The trunk is jettisoned and the spacecraft begins a slow rotation with its heat shield pointed toward the ground again.
T+25s: Small parachutes, called drogues, are deployed first during a 4-6 second window following trunk separation.
T+35s: Once the drogue parachutes stabilize the vehicle, three main parachutes deploy and further slow the spacecraft before splashdown.
T+107s: Dragon splashes down in the Atlantic Ocean about 2200 meters (1.4 mi) downrange of the launch pad.
SpaceX Dragon V2 pad abort test flight vehicle. Credit: SpaceX
“This is what SpaceX was basically founded for, human spaceflight,” said Hans Koenigsmann, vice president of Mission Assurance with SpaceX.
“The pad abort is going to show that we’ve developed a revolutionary system for the safety of the astronauts, and this test is going to show how it works. It’s our first big test on the Crew Dragon.”
The pusher abort thrusters would propel the capsule and crew safely away from a failing Falcon 9 booster for a parachute assisted splashdown into the Ocean.
Koenigsmann notes that the SpaceX abort system provides for emergency escape all the way to orbit, unlike any prior escape system such as the conventional launch abort systems (LAS) mounted on top of the capsule.
The next Falcon 9 launch is slated for mid-June carrying the CRS-7 Dragon cargo ship on a resupply mission for NASA to the ISS. On April 14, a flawless Falcon 9 launch boosted the SpaceX CRS-6 Dragon to the ISS.
There was no attempt to soft land the Falcon 9 first stage during the most recent launch on April 27. Due to the heavy weight of the TurkmenÄlem52E/MonacoSat satellite there was not enough residual fuel for a landing attempt on SpaceX’s ocean going barge.
The next landing attempt is set for the CRS-7 mission.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
Hans Koenigsmann, vice president of Mission Assurance at SpaceX with Jon Cowart, NASA’s CCP partner manager address the press during May 1, 2015 briefing on the Pad Abort Test of SpaceX's Dragon V2 crewed spacecraft. Credit: Julian Leek
SpaceX and NASA are just days away from a crucial test of a crew capsule escape system that will save astronauts lives in the unlikely event of a launch failure with the Falcon 9 rocket.
Buster the Dummy is already strapped into his seat aboard the SpaceX Crew Dragon test vehicle for what is called the Pad Abort Test, that is currently slated for Wednesday, May 6.
The test is critical for the timely development of the human rated Dragon that NASA is counting on to restore the US capability to launch astronauts from US soil abroad US rockets to the International Space Station (ISS) as early as 2017.
Boeing was also selected by NASA to build the CST-100 spaceship to provide a second, independent crew space taxi capability to the ISS during 2017.
The May 6 pad abort test will be performed from the SpaceX Falcon 9 launch pad from a platform at Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. The test will not include an actual Falcon 9 booster.
First look at the SpaceX Crew Dragon’s pad abort vehicle set for flight test in May 2015. Credit: SpaceX.
The SpaceX Dragon and trunk together stand about 20 feet tall and are positioned atop the launch mount at SLC-40 for what is clearly labeled as a development test to learn how the Dragon, engines and abort system perform.
Buster will soar along inside the Dragon that will be rapidly propelled to nearly a mile high height solely under the power of eight SpaceX SuperDraco engines.
The trunk will then separate, parachutes will be deployed and the capsule will splashdown about a mile offshore from Florida in the Atlantic Ocean, said Hans Koenigsmann, vice president of Mission Assurance at SpaceX during a May 1, 2015 press briefing on the pad abort test at the Kennedy Space Center, Florida.
The entire test will take about a minute and a half and recovery teams will retrieve Dragon from the ocean and bring it back on shore for detailed analysis.
The test will be broadcast live on NASA TV. The test window opens at 7 a.m. EDT May 6 and extends until 2:30 p.m. EDT. The webcast will start about 20 minutes prior to the opening of the window. NASA will also provide periodic updates about the test at their online Commercial Crew Blog.
SpaceX Dragon V2 pad abort test flight vehicle. Credit: SpaceX
The test is designed to simulate an emergency escape abort scenario from the test stand at the launch pad in the unlikely case of booster failing at liftoff or other scenario that would threaten astronauts inside the spacecraft.
The pad abort demonstration will test the ability of a set of eight SuperDraco engines built into the side walls of the crew Dragon to pull the vehicle away from the launch pad in a split second in a simulated emergency to save the astronauts lives in the event of a real emergency.
The SuperDraco engines are located in four jet packs around the base. Each engine produces about 15,000 pounds of thrust pounds of axial thrust, for a combined total thrust of about 120,000 pounds, to carry astronauts to safety, according to Koenigsmann.
“This is what SpaceX was basically founded for, human spaceflight,” said Hans Koenigsmann, vice president of Mission Assurance with SpaceX.
“The pad abort is going to show that we’ve developed a revolutionary system for the safety of the astronauts, and this test is going to show how it works. It’s our first big test on the Crew Dragon.”
SpaceX and NASA hope to refurbish and reuse the same Dragon capsule for another abort test at high altitude later this year. The timing of the in flight abort test hinges on the outcome of the pad abort test.
“No matter what happens on test day, SpaceX is going to learn a lot,” said Jon Cowart, NASA’s partner manager for SpaceX. “One test is worth a thousand good analyses.”
Meet Dragon V2 – SpaceX CEO Elon pulls the curtain off manned Dragon V2 on May 29, 2014 for worldwide unveiling of SpaceX’s new astronaut transporter for NASA. Credit: SpaceX
Beside Buster the dummy, who is human-sized, the Dragon is outfitted with 270 sensors to measure a wide range of vehicle, engine, acceleration and abort test parameters.
“There’s a lot of instrumentation on this flight – a lot,” Koenigsmann said. “Temperature sensors on the outside, acoustic sensors, microphones. This is basically a flying instrumentation deck. At the end of the day, that’s the point of tests, to get lots of data.”
Buster will be accelerated to a force of about 4 to 4½ times the force of Earth’s gravity, noted Koenigsmann.
The pad abort test is being done under SpaceX’s Commercial Crew Integrated Capability (CCiCap) agreement with NASA that will eventually lead to certification of the Dragon for crewed missions to low Earth orbit and the ISS.
“The point is to gather data – you don’t have to have a flawless test to be successful,” Cowart said.
The second Dragon flight test follows later in the year, perhaps in the summer. It will launch from a SpaceX pad at Vandenberg Air Force Base in California and involves simulating an in flight emergency abort scenario during ascent at high altitude at maximum aerodynamic pressure (Max-Q) at about T plus 1 minute, to save astronauts lives.
The pusher abort thrusters would propel the capsule and crew safely away from a failing Falcon 9 booster for a parachute assisted splashdown into the Ocean.
Koenigsmann notes that the SpaceX abort system provides for emergency escape all the way to orbit, unlike any prior escape system such as the conventional launch abort systems (LAS) mounted on top of the capsule.
“Whatever happens to Falcon 9, you will be able to pull out the astronauts and land them safely on this crew Dragon,” said Koenigsmann. “In my opinion, this will make it the safest vehicle that you can possibly fly.”
The SpaceX Dragon V2 and Boeing CST-100 vehicles were selected by NASA last fall for further funding under the auspices of the agency’s Commercial Crew Program (CCP), as the worlds privately developed spaceships to ferry astronauts back and forth to the International Space Station (ISS).
Both SpaceX and Boeing plan to launch the first manned test flights to the ISS with their respective transports in 2017.
During the Sept. 16, 2014 news briefing at the Kennedy Space Center, NASA Administrator Charles Bolden announced that contracts worth a total of $6.8 Billion were awarded to SpaceX to build the manned Dragon V2 and to Boeing to build the manned CST-100.
The next Falcon 9 launch is slated for mid-June carrying the CRS-7 Dragon cargo ship on a resupply mission for NASA to the ISS. On April 14, a flawless Falcon 9 launch boosted the SpaceX CRS-6 Dragon to the ISS.
SpaceX Falcon 9 and Dragon blastoff from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida on April 14, 2015 at 4:10 p.m. EDT on the CRS-6 mission to the International Space Station. Credit: Ken Kremer/kenkremer.com
There was no attempt to soft land the Falcon 9 first stage during the most recent launch on April 27. Due to the heavy weight of the TurkmenÄlem52E/MonacoSat satellite there was not enough residual fuel for a landing attempt on SpaceX’s ocean going barge.
The next landing attempt is set for the CRS-7 mission.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Hans Koenigsmann, vice president of Mission Assurance at SpaceX during CRS-6 mission media briefing in April 2015 at the Kennedy Space Center. Credit: Ken Kremer/kenkremer.com
Streak shot taken from VAB roof of dusky blastoff of SpaceX Falcon 9 on April 27, 2015 from Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. Credit: SpaceX
SpaceX set a new internal record pace for time between blastoffs of their workhorse Falcon 9 rocket with Monday’s spectacular dusky liftoff of Turkmenistan’s first satellite into heavily overcast skies that has cleared the path ahead for a busy manifest of critical flights starting with a critical pad abort test for NASA just a week from today.
After a 49 minute delay due to grim weather conditions, weather officials finally found a “window in the clouds” that permitted the Falcon 9 to launch on Monday, April 27, 2015 at 7:03pm EDT (2303 GMT).
The launch took place just 13 days after successfully launching the SpaceX Dragon CRS-6 resupply freighter to the International Space Station (ISS) for NASA on April 14.
Overall this launch marked Falcon 9’s fifth launch in four months and second in 13 days, besting SpaceX’s previous turnaround record by one day.
But it was touch and go all afternoon, when two weather rules related to cloudy conditions violated the launch commit criteria and forced a no go from the originally planned 6:14 liftoff time.
The situation was not at all promising when the weather officer announced “NO GO” during the prelaunch poll that resulted in a recycle to the T minus 20 minute mark with seemingly little prospect of a launch. Then all of a sudden, conditions improved and the count was resumed and “wet off without a hitch” said SpaceX.
On April 27, 2015 at 7:03 p.m. EDT, Falcon 9 lifted off from SpaceX’s Launch Complex 40 at Cape Canaveral Air Force Station carrying the TurkmenÄlem52E/MonacoSat satellite. Credit: SpaceX
The 224 foot tall SpaceX Falcon 9 launched on a commercial mission for Thales Alenia Space carrying the first ever communications satellite for the nation of Turkmenistan.
The TurkmenÄlem52E/MonacoSat satellite was built by Thales Alenia Space.
Launch sequence showing blastoff of SpaceX Falcon 9 on April 27, 2015 from Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. Credit: Chuck and Carol Higgins
The 14 story Falcon 9 first stage is powered by 9 Merlin 1D engines that generate about 1.3 million pounds of thrust.
The Falcon 9’s first and second stages separated three minutes after launch. The second stage fired for six minutes for its first burn to reach the initial parking orbit. It then reignited twenty-six minutes into flight, to completed a one-minute burn.
Rocket cameras capture In flight view of Falcon 9 second stage engine firing back dropped by Earth. Credit: SpaceX
The launch delivered the 10,375-pound (4500 kg) TurkmenÄlem52E/MonacoSat satellite to a geosynchronous transfer orbit. The satellite was deployed as planned approximately 32 minutes after liftoff.
Launches are never easy, as exemplified by a post launch tweet from SpaceX CEO Elon Musk after the satellite was deployed from the second stage.
‘Rocket launch good, satellite in geo transfer orbit. Still so damn intense. Looking fwd to it feeling normal one day,” tweeted Musk.
Despite the launch of Turkmenistan’s first communications satellite, the country is conducting a war on satellite dishes to receive the signals according to Human Rights Watch.
“Authorities in Turkmenistan are forcing residents to dismantle privately owned satellite dishes,” Human Rights Watch said in a statement on April 24. “A move that unjustifiably interferes with the right to receive and impart information and ideas, this serves to further isolate people in Turkmenistan, one of the most closed and repressive countries in the world, from independent sources of news and information.”
First-ever Turkmenistan satellite launches aboard SpaceX’s Falcon rocket on April 27, 2015 from Cape Canaveral Air Force Station, Florida. Credit: Julian Leek
Just 1 week from today on May 5, SpaceX plans a pad abort test for NASA that is critical for the timely development of the human rated Dragon that NASA is counting on to restore the US capability to launch astronauts from US soil to the space station.
The next Falcon 9 launch is slated for mid-June carrying the CRS-7 Dragon cargo ship on a NASA mission to the ISS.
There was no attempt to soft land the Falcon 9 first stage during the April 27 launch. Due to the heavy weight of the TurkmenÄlem52E/MonacoSat satellite there was not enough residual fuel for a landing attempt on SpaceX’s ocean going barge.
The next landing attempt is set for the CRS-7 mission.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
