Space Station Archives

June 9, 2015December 23, 2015 by Ken Kremer

Longest Woman Spaceflyer to Return as Russia Reshuffles Station Launches After Rocket Failure

Flight Engineer Samantha Cristoforetti of the European Space Agency in Star Trek uniform as SpaceX Dragon arrives at the International Space Station on April 17, 2015. Credit: NASA

The longest space mission in history by a female astronaut is now set to conclude on Thursday, following Russia’s confirmation of a significant reshuffling of the crew and cargo flight manifest to the International Space Station (ISS) for the remainder of 2015 – all in the wake of the unexpected Russian launch failure of a station bound Progress resupply ship in late April with far reaching consequences.

The record setting flight of approximately 200 days by Italian spaceflyer Samantha Cristoforetti, along with her two Expedition 43 crewmates, will come to an end on Thursday, June 11, when the trio are set to undock and depart the station aboard their Russian Soyuz crew capsule and return back to Earth a few hours later.

NASA TV coverage begins at 6 a.m. EDT on June 11.

Roscosmos, the Russian Federal Space Agency, officially announced today, June 9, a revamped schedule changing the launch dates of several upcoming crewed launches this year to the Earth orbiting outpost.

Launch dates for the next three Progress cargo flights have also been adjusted.

The next three person ISS crew will now launch between July 23 to 25 on the Soyuz TMA-17M capsule from the Baikonur cosmodrome in Kazakhstan. The exact timing of the Expedition 44 launch using a Russian Soyuz-FG booster is yet to be determined.

The International Space Station, photographed by the crew of STS-132 as they disembarked. Credit: NASA

Soon after the Progress mishap, the Expedition 43 mission was extended by about a month so as to minimize the period when the ISS is staffed by only a reduced crew of three people aboard – since the blastoff of the next crew was simultaneously delayed by Roscosmos by about two months from May to late July.

Indeed Cristoforetti’s endurance record only came about as a result of the very late mission extension ordered by Roscosmos, so the agency could investigate the root cause of the recent launch failure of the Russian Progress 59 freighter that spun wildly out of control soon after blastoff on April 28 on a Soyuz-2.1A carrier rocket.

Roscosmos determined that the Progress failure was caused by an “abnormal separation of the 3rd stage and the cargo vehicle” along with “associated frequency dynamic characteristics.”

The Expedition 43 crew comprising of Cristoforetti, NASA astronaut and current station commander Terry Virts, and Russian cosmonaut Anton Shkaplerov had been scheduled to head back home around May 13. The trio have been working and living aboard the complex since November 2014.

The 38-year old Cristoforetti actually broke the current space flight endurance record for a female astronaut during this past weekend on Saturday, June 6, when she eclipsed the record of 194 days, 18 hours and 2 minutes established by NASA astronaut Sunita Williams on a prior station flight back in 2007.

Cristoforetti, of the European Space Agency (ESA), also counts as Italy’s first female astronaut.

The Progress 59 cargo vessel, also known as Progress M-27M, along with all its 2.5 tons of contents were destroyed during an uncontrolled plummet back to Earth on May 8.

NASA astronaut Terry Virts (left) Commander of Expedition 43 on the International Space Station along with crewmates Russian cosmonaut Anton Shkaplerov (center) and ESA (European Space Agency) astronaut Samantha Cristoforetti on May 6, 2015 perform a checkout of their Russian Soyuz spacesuits in preparation for the journey back to Earth - now set for June 11, 2015. Credits: NASA — NASA astronaut Terry Virts (left) Commander of Expedition 43 on the International Space Station along with crewmates Russian cosmonaut Anton Shkaplerov (center) and ESA (European Space Agency) astronaut Samantha Cristoforetti on May 6, 2015 perform a checkout of their Russian Soyuz spacesuits in preparation for the journey back to Earth – now set for June 11, 2015. Credits: NASA

Roscosmos announced that they are accelerating the planned launch of the next planned Progress 60 (or M-28M) from August 6 up to July 3 on a Soyuz-U carrier rocket, which is different from the problematic Soyuz-2.1A rocket.

Following the Soyuz crew launch in late July, the next Soyuz will blastoff on Sept. 1 for a 10 day taxi mission on the TMA-18M capsule with cosmonaut Sergei Volkov and ESA astronaut Andreas Mogensen. After British opera singer Sarah Brightman withdrew from participating as a space tourist, a new third crew member will be named soon by Roscosmos.

The final crewed Soyuz of 2015 with the TMA-19M capsule has been postponed from Nov. 20 to Dec. 15.

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 is now slated for liftoff on June 26. Watch for my onsite reports from KSC.

The most recent unmanned Dragon cargo CRS-6 mission concluded with a Pacific Ocean splashdown on May 21.

The Dragon will be carrying critical US equipment, known as the IDA, enabling docking by the SpaceX Crew Dragon and Boeing CST-100 astronaut transporters – due for first crewed launches in 2017.

ESA (European Space Agency) astronaut Samantha Cristoforetti enjoys a drink from the new ISSpresso machine. The espresso device allows crews to make tea, coffee, broth, or other hot beverages they might enjoy. Credit: NASA

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.

Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.

Ken Kremer

May 21, 2015December 23, 2015 by Ken Kremer

SpaceX Dragons Coming and Going at Record Setting Pace

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 — 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.

Ken Kremer

Video caption: SpaceX CRS-6 Falcon 9 Launch to the International Space Station on April 14, 2015. Credit: Alex Polimeni

May 13, 2015December 23, 2015 by Ken Kremer

Russia Postpones ISS Crew Rotations Following Progress Freighter Failure

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.

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.

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.

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.

Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.

Ken Kremer

May 9, 2015December 23, 2015 by Ken Kremer

Wayward Progress Destroyed During Fiery Plummet, ISS Crew Launches ‘Under Evaluation’

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.

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.

Kelly and Kornienko comprise the first ever “1 Year ISS Crew.”

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.

The next SpaceX 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 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.

Ken Kremer

May 7, 2015December 23, 2015 by Ken Kremer

Russia’s Out of Control Progress Freighter Doomed to Fiery Finale Friday

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.

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.

Ken Kremer

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

May 6, 2015December 23, 2015 by Ken Kremer

SpaceX Completes Successful Crew Dragon Test of Astronaut Life Saving Escape System

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.

Ken Kremer

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

May 5, 2015December 23, 2015 by Ken Kremer

Key Facts and Timeline for SpaceX Crewed Dragon’s First Test Flight May 6 – Watch Live

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 first critical test flight of SpaceX’s crewed Dragon that will soon launch American astronauts back to orbit and the International Space Station (ISS) from American soil is now less than two days away.

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.

You can watch the Pad Abort Test via a live webcast on NASA TV: http://www.nasa.gov/nasatv

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.

“This is what SpaceX was basically founded for, human spaceflight,” said Hans Koenigsmann, vice president of Mission Assurance with SpaceX.

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.

Ken Kremer

May 2, 2015December 23, 2015 by Ken Kremer

Buster the Dummy Strapped in for Mile High SpaceX Dragon Flight Test

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.

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.

First look at the SpaceX Crew Dragon’s pad abort vehicle set for flight test in March 2014. Credit: SpaceX. — 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.

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.

“This is what SpaceX was basically founded for, human spaceflight,” said Hans Koenigsmann, vice president of Mission Assurance with SpaceX.

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 — 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.

“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 landing attempt is set for the CRS-7 mission.

Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.

Ken Kremer

April 26, 2015December 23, 2015 by Ken Kremer

SpaceX Picks Up Launch Pace; Sets April 27 Commercial Launch and May 5 Crew Dragon Pad Abort Test

SpaceX Dragon V2 test flight vehicle set for May 5, 2015 pad abort test. Credit: SpaceX
See below SpaceX live launch webcast link[/caption]

As promised, SpaceX is picking up its launch pace in 2015 with a pair of liftoffs from the Florida space coast slated for the next week and a half. They follow closely on the heels of a quartet of successful blastoffs from Cape Canaveral, already accomplished since January.

If all goes well, a commercial satellite launch and a human spaceflight related pad abort test launch for NASA are scheduled for April 27 and May 5 respectively.

Mondays launch of a communications satellite for Thales Alenia Space takes place just 13 days after SpaceX successfully launching the Dragon CRS-6 resupply freighter to the International Space Station (ISS) for NASA on April 14.

The 13 day turnaround time will mark a new launch cadence record for SpaceX if the weather and rocket cooperate, eclipsing the 14 day turnaround record set last September.

The 224 foot tall SpaceX Falcon 9 rocket is scheduled to launch at approximately 6:14 p.m. EDT (2214 GMT) on April 27 from Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. It will deliver the TurkmenÄlem52E/MonacoSat satellite to a geosynchronous transfer orbit.

This first satellite ever for Turkmenistan will be deployed approximately 32 minutes after liftoff of the fifth Falcon 9 rocket this year.

The outlook is currently 60 percent GO for favorable weather conditions at launch time.

You can watch the launch live via a SpaceX webcast that begins about 20 minutes before launch at: spacex.com/webcast

The May 5 pad abort test for NASA 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 test will simulate an emergency abort from a test stand and will also take place from the Cape’s Space Launch Complex 40 in Florida.

SpaceX has a four hour launch window in which to conduct the test. The test window opens at 9:30 a.m. EDT (1330 GMT) on May 5. There is a backup opportunity on May 6.

The purpose is to test the ability of the abort system to save astronauts lives in the event of a real emergency.

The SuperDraco engines are located in four jet packs around the base. Each enigne can produce up to 120,000 pounds of axial thrust to carry astronauts to safety, according to a SpaceX description.

Here is a SpaceX video of SuperDraco’s being hot fire tested in Texas.

Video caption: Full functionality of Crew Dragon’s SuperDraco jetpacks demonstrated with hotfire test in McGregor, TX. Credit: SpaceX

The pad abort test is being done under SpaceX’s Commercial Crew Integrated Capability (CCiCap) agreement with NASA.

The initial pad abort test will test the ability of the full-size Dragon to safely push away and escape in case of a failure of its Falcon 9 booster rocket in the moments around launch, right at the launch pad.

“The purpose of the pad abort test is to demonstrate Dragon has enough total impulse (thrust) to safely abort,” SpaceX spokeswoman Emily Shanklin informed me.

For that test, Dragon will use its pusher escape abort thrusters to lift the Dragon safely away from the failing rocket.

The vehicle will be positioned on a structural facsimile of the Dragon trunk in which the actual Falcon 9/Dragon interfaces will be represented by mockups. The test will not include an actual Falcon 9 booster.

A second Dragon flight test follow later in the year. It involves simulating an in flight emergency abort scenario during ascent at high altitude at maximum aerodynamic pressure 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 landing into the Atlantic Ocean.

Both SpaceX and Boeing plan to launch the first manned test flights to the ISS with their respective transports in 2017.

There will be no attempt to soft land the Falcon 9 first stage during the April 27 launch. The next landing attempt is set for mid-June.

Up close view of the SpaceX Falcon 9 rocket landing legs prior to launch on April 14, 2015 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.

Ken Kremer

April 11, 2015December 23, 2015 by Ken Kremer

SpaceX Falcon 9 and Dragon CRS-6 set for April 13 Launch to ISS and Historic Landing Attempt

Infographic shows how SpaceX Falcon 9 will fly back to Earth after next launch on CRS-6 mission to ISS. Credit: SpaceX

KENNEDY SPACE CENTER, FL – Now just a day away, all systems are “GO” for blastoff of the next SpaceX Falcon 9 rocket carrying the Dragon CRS-6 cargo capsule on Monday, April 13, on a mission to the International Space Station (ISS) and a near simultaneous historic attempt to soft land the boosters first stage on a barge in a remote area of the Atlantic Ocean, hundreds of miles offshore from the US eastern seaboard.

In advance of Mondays launch attempt, SpaceX engineers successfully completed the practice countdown dress rehearsal and required static fire engine test this afternoon, Saturday, April 11, to ensure everything is ready with the rocket and first Stage Merlin 1-D engines for a safe and successful mission to the orbiting outpost.

The Dragon capsule has already been loaded with most of the cargo bound for the space station and was mated to the Falcon 9 booster earlier this week.

Although it is raining heavily now around the Florida Space Coast region along with multiple tornado warning threats, NASA and SpaceX officials are hopeful that weather conditions will clear sufficiently to permit Monday’s planned launch.

U.S. Air Force weather forecasters from the 45th Weather Squadron currently rate the chances of favorable conditions at launch time as 60 percent GO for liftoff of the sixth SpaceX commercial resupply services mission (CRS-6) to the ISS.

Static fire engine test completed on April 11, 2015 in advance of April 13 launch attempt to the International Space Station. Credit: SpaceX

SpaceX and NASA are targeting blastoff of the Falcon 9 and Dragon CRS-6 spacecraft for Monday, April 13, slated at approximately 4:33 p.m. EDT from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida.

NASA Television plans live launch coverage starting at 3:30 p.m EDT: http://www.nasa.gov/multimedia/nasatv/index.html

SpaceX also plans live launch coverage beginning at 4:15pm EDT: www.spacex.com/webcast

The launch window is instantaneous, meaning that the rocket must liftoff at the precisely appointed time. Any delays due to weather or technical factors will force a scrub.

If all goes well with Mondays launch attempt, the Dragon spacecraft will rendezvous with the Earth orbiting outpost Wednesday, April 15, after a two day orbital chase.

In the event of a scrub for any reason, the backup launch day is 24 hours later on Tuesday, April 14, at approximately 4:10 p.m.

The Falcon 9 first stage is outfitted with four landing legs and grid fins to enable the landing attempt, which is a secondary objective of SpaceX. Cargo delivery to the station is the overriding primary objective and the entire reason for the CRS-6 mission.

The SpaceX plan is to direct the spent 1st stage on a precision guided rocket assisted descent from high altitude to accomplish a pinpoint soft landing onto a tiny platform in the middle of a vast ocean.

The ocean-going barge is known as the ‘autonomous spaceport drone ship’ (ASDS). It is being positioned some 200 to 250 miles offshore of the Carolina’s in the Atlantic Ocean along the rockets flight path flying along the US Northeast coast to match that of the ISS.

The ASDS measures only 300 by 100 feet, with wings that extend its width to 170 feet.

A SpaceX Falcon 9 rocket and Dragon cargo ship are set to liftoff on a resupply mission to the International Space Station (ISS) from launch pad 40 at Cape Canaveral, Florida on Jan. 6, 2015. File photo. Credit: Ken Kremer – kenkremer.com — A SpaceX Falcon 9 rocket and Dragon cargo ship are set to liftoff on a resupply mission to the International Space Station (ISS) from launch pad 40 at Cape Canaveral, Florida. File photo. Credit: Ken Kremer – kenkremer.com

This marks the 2nd attempt by SpaceX to recovery the 14 story tall Falcon 9 first stage booster on the ASDS barge.

The first attempt in January during the CRS-5 mission was largely successful, as I wrote earlier at Universe Today, despite making a ‘hard landing’ on the ASDS. The booster did make it to the drone ship, positioned some 200 miles offshore of the Florida-Carolina coast, northeast of the launch site in the Atlantic Ocean. The rocket broke into pieces upon hitting the barge.

Overall CRS-6 is the sixth SpaceX commercial resupply services mission and the seventh trip by a Dragon spacecraft to the station since 2012.

Dragon is packed with more than 4,300 pounds (1915 kilograms) of scientific experiments, technology demonstrations, crew supplies, spare parts, food, water, clothing and assorted research gear for the six person Expedition 43 and 44 crews serving aboard the ISS.

Dragon cargo vessel ready for mating to SpaceX Falcon 9 rocket for CRS-6 mission launch to the International Space Station (ISS) scheduled for April 13, 2015. Credit: SpaceX

The ship will remain berthed at the ISS for about five weeks.

The ISS cannot function without regular deliveries of fresh cargo by station partners from Earth.

Watch for Ken’s continuing 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.

Ken Kremer

Dragon cargo vessel being mated to SpaceX Falcon 9 rocket for CRS-6 mission launch to the International Space Station (ISS) scheduled for April 13, 2015. Credit: SpaceX

………….

Learn more about SpaceX, Mars rovers, Orion, Antares, MMS, NASA missions and more at Ken’s upcoming outreach events:

Apr 11-13: “SpaceX, Orion, Commercial crew, Curiosity explores Mars, MMS, Antares and more,” Kennedy Space Center Quality Inn, Titusville, FL, evenings

Apr 18/19: “Curiosity explores Mars” and “NASA Human Spaceflight programs” – NEAF (NorthEast Astronomy Forum), 9 AM to 5 PM, Suffern, NY, Rockland Community College and Rockland Astronomy Club