How Many Astronauts Does NASA Need?

The White House is looking into ways to reduce the number of astronauts employed by the U.S. Image Credit: NASA

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CAPE CANAVERAL – When we think of NASA, the first thing that most Americans picture is the men and women of the astronaut corps. It turns out that the White House has been thinking about them as well – as maybe something that might need to be cut down. The Obama administration has requested a 10-month long study be held to determine the appropriate ‘size’ of NASA’s astronaut corps.

There are only two (and a potential third) shuttle flights remaining on the current manifest.

Right now, NASA has 64 astronauts, which some might consider a bit much if very few will be flying to space. However, if three NASA astronauts are part of each 6-member, 6-month Expedition on the International Space Station from 2011-2017 (the projected time period when NASA will be unable to launch their own astronauts) that still is 36 astronauts with a mission to space.

But the proposal to cut NASA’s astronaut corps comes on the heels of numerous successive cuts that the space agency has endured over the past year. Many view the loss of the corps as one more blow to both spaceflight experience as well as national prestige.

The White House hopes that commercial space companies such as SpaceX, which is slated to launch the second of its Falcon 9 rockets sometime this week, will emerge to fill the void created by NASA’s absence. However, to date, none of these firms have launched an astronaut into orbit. During the interim, and until NASA can build its own heavy lift vehicle, the US space agency is relying on — and paying — the Russians to bring US astronauts to the ISS via the Soyuz.

There has never been more than 150 astronauts at any given time (the most ever was 149 back in 2000). Although most Americans assume that NASA has a massive budget, for what the agency does and provides, it is incredibly small, about one-seventh of a penny out of every tax dollar helps to pay for the ISS, the shuttle program, the probes and rovers to the planets and the astronaut’s salaries. The agency’s budget is currently $18.7 billion a year. The 47 civilian astronauts earn between $65,000 and $100,000 annually, with the remaining military astronauts being paid through the Department of Defense (DoD) which NASA reimburses.

The National Academies is the organization that will conduct the review of the astronaut corps and they are leaving no stone unturned, even the T-38 ‘Talon’ jets that the astronauts fly in, are coming under scrutiny. These jets are not state-of-the-art fighters, but rather training aircraft that date back to the beginning of the space age. These planes, equipment and facilities used to train astronauts and the current number of astronauts will all be reviewed.

“I still don’t know how many folks are in the queue and were not selected for shuttle, ” said two-time shuttle astronaut Robert Springer. “If you are in the program and there is little or no chance to fly in the next 4-8 years that’s too bad, but it’s not the first time this has happened, and if you like the environment, working with some of the greatest people in the business, it can lead to challenging working on the next great enterprise.”

But some have a different idea of how NASA could cut costs.

“You know, if Obama really wanted to cut waste at NASA – he’d start with headquarters,” said a long-time NASA employee who requested to remain anonymous for fear of retribution. “That place is stocked with GS-15s – who really don’t do much of anything!” He said referring to the government pay grade of many of the high-level officials that work at NASA’s headquarters in Washington D.C.

NASA’s Nanosail-D Released into the Winds of Space

Artist concept of Nanosail-D in Earth orbit. Credit: NASA

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Despite being an idea rattling around inside the head of engineers and space enthusiasts for over 40 years, solar sails have never really gained much traction in the way of actual deployment. Today, NASA has taken an important step towards testing solar sail technology for use in future spacecraft.

The Nanosail-D spacecraft was launched Friday, Nov. 19 at 8:25 p.m. EST from Kodiak Island, Alaska, and was piggybacking on another satellite, both aboard a Minotaur IV rocket. It has successfully been ejected from the launch vehicle as of today, and is on its own. Though the sails have yet to deploy, this is already an achievement that bodes well for the future of both solar sail and small satellite technology.

The Nanosail-D satellite – commonly described as “loaf of bread” sized – was ejected from the Fast, Affordable, Science and Technology Satellite (FASTSAT) at 1:31 a.m. EST December 6th. Not only is this NASA’s first attempt at deploying a solar sail in space, but this also marks the first time a nanosatellite has been ejected from another satellite, proving that this is a reliable way to get multiple satellites into orbit at the same time.

Nanosail-D is a nanosatellite – or cubesat – designed to test the potential for solar sails in atmospheric braking. Such sails – made from a an ultra-thin and light material, in this case the polymer CP1 – could potentially be used to propel a spacecraft outside of our Solar System. The Nanosail-D sail will be deployed in low-Earth orbit, about 650 km (400 miles) up. The sail will be used to show how such technology could slow down satellites when they need to de-orbit.

Currently, de-orbiting satellites involves maneuvering them into a lower and lower orbit using the engines of the satellite, which necessitates more propellant aboard the spacecraft simply to dispose of it properly. Nanosail-D will deploy a solar sail and orbit for 70-120 days, eventually spiraling into the Earth’s atmosphere to burn up.

Since it will be orbiting so close to the Earth, its potential for testing solar sails as propulsion is not the focus of the mission; however, the deployment of a solar sail is itself a huge engineering challenge. Nanosail-D will be the perfect experiment to test out whether the method NASA will be using to unfurl the sail is workable in space.

Immediately after the ejection earlier today, a timer started a three-day countdown. Once it reaches zero, it will go boom – that is, four booms will spring out from the small satellite, and within five seconds the sail will be fully extended to its 100 square foot (10 square meter) sail-span.

The first Nanosail-D, unfurled in the lab with the mission team. Image Credit: NASA

Dean Alhorn, NanoSail-D principal investigator and aerospace engineer at the Marshall Space Flight Center explains on the mission page, “The deployment works in the exact opposite way of carpenter’s measuring tape. With a measuring tape, you pull it out, which winds up a spring, and when you let it go it is quickly pulled back in. With NanoSail-D, we wind up the booms around the center spindle. Those wound-up booms act like the spring. Approximately seven days after launch, it deploys the sail off the center spindle.”

There have been other attempts at launching and deploying solar sails before, but once deployed, Nanosail D will be the longest-running solar sail experiment yet attempted. Both JAXA and the Russian space agency have deployed successful solar sail experiments.

JAXA launched a clover-shaped sail aboard a sounding rocket in 2004, and the experiment lasted about 400 seconds. They also launched the IKAROS spacecraft in May, 2010, which is currently en-route to Venus, and will fly to the opposite side of Sun from Earth. The Russians deployed a 20-meter diameter mirror successfully aboard the Progress M-15 resupply mission to Mir in 1993. Named Znamya 2, the mirror cast a 5km (3 mile)-wide bright spot on the ground that swept across southern France to western Russia, and orbited for several hours before burning up.

The Planetary Society is probably the most vocal and enthusiastic organization in support of solar sail technology. They are currently developing a solar sail similar to that of Nanosail-D, called Lightsail-1. The society attempted a launch of a solar sail called Cosmos 1 in 2005, but the rocket carrying the satellite did not fire during its second stage, and the craft was lost.

Nanosail-D is in its second iteration. The first spacecraft was commissioned in early 2008, and the team – astrophysicists and engineers at the Marshall Space Flight Center and the Ames Research Center – had four months to put together a workable satellite. It launched aboard a Falcon 1 rocket in August of 2008, but the rocket burned up in the atmosphere. If engineers are good at one thing, it’s redundancy – the team had constructed a second Nanosail-D, and had ample time to work out some of the bugs and develop the technology even more.

Doug Huie, a research technician at the University of Alabama in Huntsville, prepares the spacecraft for launch testing. The spacecraft measures 4 inches wide, 4 inches deep and 13 inches long, and weighs 9 pounds. (10cm X 10cm X 33 cm, 4kg) Image Credit: NASA

The Planetary Society almost had a chance to launch Nanosail-D, according to Louis Friedman, executive director of the The Planetary Society, they were contacted by the team developing Nanosail-D after the failed initial launch attempt, and asked if they would like to help launch the second Nanosail-D spacecraft. The Planetary Society agreed, but the team then found space aboard the FASTSAT launch. Consequently, Lightsail-D was borne out of this brief collaboration.

The timer is silently counting down what promises to be an exciting mission, and potential milestone in the future of spaceflight. Watch this space for further developments on the mission.

Sources: NASA press release, The Planetary Society, NASA Science, NASA Nanosail-D fact-sheet

Weekend Update: SpaceX Success, Russian Launch Failure

Success for SpaceX static test fire of Falcon 9. Credit: SpaceX

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The third time was a charm for SpaceX’s static fire of the Falcon 9 rocket, with a successful 2-second test of the nine engines, clearing the way for a launch next week for a NASA demonstration mission. SpaceX said preliminary he data analysis showed the engine test firing went as expected. An earlier try on Friday and then again Saturday morning ended in a-computer controlled abort.

SpaceX said the launch of the rocket, carrying a demonstration Dragon capsule could occur as early as December 7th, with December 8th and 9th as backup days. The weather prediction for Tuesday, however is for cold temperatures and high winds and they estimate a 40% chance for “go” that day. The launch window for all three days extends from 9:00 a.m. to 12:22 p.m. EST, from Launch Complex 40 at Cape Canaveral Air Force Station in Florida.

From SpaceX: “The Dragon capsule is expected to orbit the Earth at speeds greater than 17,000 miles per hour, reenter the Earth’s atmosphere, and land in the Pacific Ocean roughly 3 1/2 hours later. This will be the first attempt by a commercial company to recover a spacecraft reentering from low-Earth orbit. It is a feat performed by only 6 nations or government agencies: the United States, Russia, China, Japan, India, and the European Space Agency.”

There will be a webcast of the launch on the SpaceX website that will begin approximately 45 minutes prior to the opening of the daily launch window, at 8:15 a.m. EST / 5:15 a.m. PST / 13:15 UTC. During the webcast, SpaceX hosts will provide information specific to the flight, an overview of the Falcon 9 rocket and Dragon spacecraft and commentary on the launch and flight sequences.
There will be a post-mission news conference at the Kennedy Space Center.

On Sunday, a Russian rocket launched with three new navigation satellites but failed to reach orbit, and some reports say the satellites crashed into the Pacific Ocean after launch.

See more from Tariq Malik at Space.com

Aviation Week as a great retrospective article on the space shuttle.

Gallery: X-37B Space Plane Returns to Earth

The X-37B after landing. Credit: 30th Space Wing (Vandenberg Air Force Base, Calif.

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The secret military space plane has returned home, and while the mission was classified, the Air Force and Boeing have supplied pictures of the craft after landing. With this mission appearing to be a success, the Air Force is preparing to launch the next X-37B, OTV-2, in Spring 2011 aboard an Atlas V booster.

See more images below.

X-37B is shown here after landing at 1:16 a.m. Pacific time today, concluding its more than 220-day experimental test mission. Credit: Boeing
The X-37B after landing. Credit: 30th Space Wing (Vandenberg Air Force Base, Calif.
X-37B on the runway at Vandenburg Air Force Base. Credit: Boeing.
X-37B after landing. Credit: 30th Wing, Vandenberg Air Force Base.
X-37B is shown here after landing at 1:16 a.m. Pacific time today, concluding its more than 220-day experimental test mission. Credit: Boeing
X-37B Landing by 30th Space Wing (Vandenberg Air Force Base, Calif.)

Here’s a video which includes the landing (which we showed on our previous article) plus post landing activities.

Shuttle Launch Delayed to February of 2011

Discovery on the launchpad. Credit: Alan Walters (awaltersphoto.com) for Universe Today

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NASA announced today that the launch of space shuttle Discovery for the STS-133 mission has been pushed back to no earlier than Feb. 3, 2011, to allow for more testing on the external tank stringers. Cracks on the stringers were found after the tank was loaded with cryogenic fuel for a subsequently scrubbed launch attempt in November.

“We’ve hit a point where there is no obvious answer for what has occurred,” said shuttle program manger John Shannon at a press briefing today, “so we have to take the next step and understand to very fine level the stress on the stringers and to find if that is a root cause of what happened to the STS-133 tank. I need to better understand the conditions to fly that fly tank confidently. It’s unfortunate we are not making the December launch window. But we want to make sure that we do this exactly right.”

The cracks appeared on two 21-foot-long, U-shaped aluminum brackets, called stringers, on the shuttle’s external tank. NASA repaired the cracks and reapplied foam to the exterior of the stringers. But they don’t understand the reasons the cracks appeared, and NASA managers feel this is likely a unique event.

“We don’t have any data that we have been flying with cracks all along,” said Shannon.

The launch window is open from Feb. 3 -10. This delay also moves the STS-134 launch from February to April.
This delay, however, doesn’t mean there won’t be any activity at the International Space Station. The crew for Expedition 26 launches on the Soyuz on Dec. 15, Japan’s HTV supply ship launches on January 20, a Progress resupply ship docks on Jan. 31, and ESA’s ATV resupply vehicle is scheduled for a February 15th launch.

NASA’s Bill Gerstenmaier said the teams will try to replicate what engineers think is the most leading cause is of the failure. “They will build up a stringer panel and put some defects in, the manufactured tolerances, and try to replicate the crack we saw during cryo loadings,” he said. “We’ll also do a test at cape where we load tank with cryogenic propellant and put some devices on the tank to monitor how it loads up and that will serve to validate the math models and the environment we see during loading.”

Gerstenmaier added that between those two tests, they should be able to understand what caused the cracks, but there is now way they can do those tests before December 17, the data NASA had been shooting for to launch STS-133.

“The teams have done tremendous job, but it’s time to pursue a different path,” he said. He also provided a quote from former NASA pioneer Hugh Dryden, who said the purpose of tests is to separate real from imaged problems and to reveal overlooked and unintended problems.

Secret X-37B Mini Space Shuttle Lands

U.S. Air Force X-37B reusable space plane. Credit: Boeing, US Air Force.

The X-37B mini space shuttle made a stealth landing during the early morning hours, landing at Vandenberg Air Force base at 1:16 a.m. PDT (0916 GMT) today (Friday, Dec. 3.) The US Air Force’s first unmanned space plane successfully glided to a landing after nearly 225 days in space.

X-37B program manager Lt Col Troy Giese stated moments after landing, “We are very pleased that the program completed all the on-orbit objectives for the first mission.”

Above is an infrared camera view of the space plane taxiing after landing this morning.

The space plane’s exact mission was not divulged, and the Air Force did not immediately report anything about the performance of the spacecraft or if any issues arose.

The X-37B’s mission is to “demonstrate a reliable, reusable, unmanned space test platform for the United States Air Force,” according to a fact sheet put out by the military. “Objectives of the OTV program include space experimentation, risk reduction and concept of operations development for reusable space vehicle technologies.”

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Source: Space Launch News

Lockheed Martin Wants to Launch Orion Spacecraft – on a Delta IV Heavy

If everything goes according to their plan - Lockheed Martin would have their Orion spacecraft launch on a Delta IV Heavy rocket. Image Credit: NASA

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After the announcement of the Vision for Space Exploration (VSE) one of the proposals to reduce the space flight ‘gap’ between the shuttle program and the Constellation Program was to attach the Crew Exploration Vehicle (CEV) to a Delta IV Heavy rocket. With all the political wrangling this simple solution appeared lost – or so it was thought. The idea of man-rating a Delta IV heavy never seemed to quite fade away and now a plan is under way to launch the Orion spacecraft on top of one of these massive launch vehicles – within the next three years.

More importantly by launching these test flights, NASA will be able to review up to three-quarters of the technical challenges involved with a flight to either the moon or to an asteroid – without risking a crew. Some of the elements that would be checked out on this unmanned test flight would be:

• Spacecraft stabilization and control.

• Parachutes used for reentry and other systems used to recover the spacecraft.

• Micrometeoroid shielding along with other systems used to protect the vehicle.

The manufacturer of the Orion spacecraft, Lockheed Martin, plans to have the first flight take place as soon as 2013. This test flight would launch from Cape Canaveral Air Force Station’s Space Launch Complex 37. If all goes well? Astronauts could be riding the Delta IV heavy to destinations such as the moon or an asteroid by 2015. For now though these plans are still in their infancy.

If all does go according to how Lockheed Martin human spaceflight engineers plan – the first mission to an asteroid could beat the 2025 date that President Obama set during his April visit to Kennedy Space Center – by ten years.

Each successive flight after the first unmanned mission would shake out the technology more and more until crews fly into orbit. The first unmanned flight, as envisioned by Lockheed Martin, would emulate many of the elements of a mission to either an asteroid or to the moon.

For long-time followers of the space program, witnessing a man-rated launch of a Delta IV heavy will very much be a blast from the past. In the early days of the space program astronauts rode Atlas and Titan rockets into orbit (these rockets were actually man-rated Cold-War missiles). Attached atop the Delta IV would be the Orion capsule and on top of that would be a Launch Abort System (LAS). This last component is a small mini-rocket that would pull the capsule up and away from the Delta if there is an emergency.

Once the flight is completed, the Orion will splashdown in the same general area as Space Exploration Technology’s (SpaceX’s) Dragon Spacecraft – the Pacific Ocean off the coast of California.

The Orion Spacecraft has proved itself to be a survivor. President Obama initially promised to support NASA’s lunar ambitions on the campaign trail – a promise he went back on once elected. He then attempted to cancel all elements of the Constellation Program of which Orion was a key part. This proposal landed with a resounding thud. He then attempted to gain support for his space plan by resurrecting Orion as a stripped down lifeboat for the International Space Station (ISS) – this too met with little support. Eventually, after much Congressional wrangling, Orion emerged as the one element of Constellation – which Obama could not kill.

Congress has put some support behind his plan to have commercial space firms provide transportation to low-Earth-orbit (LEO). However, these firms have no experience whatsoever launching men and material to orbit – and Congress wanted to have a backup plan – that meant Orion. As the launch vehicle that would have hefted Orion to orbit was effectively dead another rocket was required – the best candidate was the Delta IV heavy.

Within three years a Delta IV Heavy like this one could launch the first Orion capsule. Photo Credit: Universe Today/Alan Walters - awaltersphoto.com

Secret Mini Space Shuttle Could Land on Friday

The X-37B spaceplane sits on a runway at Vandenberg Air Force Base during prelaunch taxi tests. Credit: U.S. Air Force

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The US Air Force announced that the X-37B Orbital Test Vehicle, a miniature, unmanned space shuttle could return to Earth as soon as this Friday, December 3. It has been in Earth orbit for about nine months on a classified mission for the military. It will land at Vandenberg Air Force Base in Los Angeles sometime between Friday and Monday, Air Force officials said in a statement. The exact time of touchdown will depend on weather conditions and technical factors.

Preparations for the landing began on Tuesday, the Air Force Space Command said. The backup landing site would be Edwards Air Force Base.

The X-37B launched from Cape Canaveral, Florida on April 22. It was built by Boeing, and the vehicle looks like a space shuttle orbiter, but is much smaller: at 9 meters long and 4.5 meter wide (29 X 15 ft), with a payload bay that is 2.1 by 1.2 meters (7 by 4 feet) the X-37B is about 1/4th the size of a shuttle.

Launch of the X37-B. Credit: Alan Walters (awaltersphoto.com) for Universe Today

The X-37B uses solar arrays and lithium ion batteries to generate power instead of fuel cells like the space shuttle, a major reason why it can stay on orbit for much longer.

Originally the vehicle was scheduled for launch in from the payload bay of the Space Shuttle, but that plan was axed following the Columbia accident.

The X-37B’s mission is to “demonstrate a reliable, reusable, unmanned space test platform for the United States Air Force,” according to a fact sheet put out by the military. “Objectives of the OTV program include space experimentation, risk reduction and concept of operations development for reusable space vehicle technologies.”

It will be interesting to see if the military will share any of the on-orbit activities of the space plane and what capabilities and uses this vehicle might have in the future.

See our previous article “What is the Air Force’s Secret X-37B Space Plane Doing in Orbit?” for more information.

Source: Air Force Space Command

Falcon 9 Ready for Second Flight – Dragon for First

SpaceX's Dragon spacecraft is set to launch from Cape Canaveral on Dec. 7. Image Credit: SpaceX

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Space Exploration Technologies (SpaceX) is preparing to conduct the first demonstration launch for NASA’s Commercial Orbital Transportation Services (COTS) program, utilizing its Falcon 9 rocket. This first test flight appears to be holding solid for its targeted liftoff on Tuesday, Dec. 7. Launch will take place from the company’s launch site at Launch Complex 40 located at Cape Canaveral Air Force Station in Florida.

The launch window for this first demo flight extends from 9:03 a.m. to 12:22 p.m. EST. If it is required, launch opportunities are also open on Dec. 8 and Dec. 9 during the same general time frame. NASA TV will have coverage — you can watch it online at this link, or if you have it through your satellite or cable provider.

COTS 1, as this first flight has been dubbed, will be the first launch of the Dragon spacecraft, this will also mark the first commercial attempt to have their spacecraft reenter Earth’s atmosphere. The planned Dec. 7 flight is the first of three test launches currently envisioned in the Falcon 9 test flight series. This first flight is planned to check out important characteristics of both the Dragon spacecraft as well as the Falcon 9 launch vehicle. Some of these include orbital operations, launch elements of the combined Dragon/Falcon 9 vehicle, descent, re-entry and splashdown (which will occur in the Pacific Ocean).

NASA established the COTS program to obtain commercial launch services to jump start the commercial space industry. Under the Obama administration’s plans for the space agency, NASA will utilize these private space firms to send cargo to the International Space Station (ISS). More to the point, it is hoped that these commercial space companies can reduce the hefty price tag associated with sending something into orbit.

There will be a press conference held before the launch, it is currently planned to be held on Monday, Dec. 6, at 1:30 p.m. The conference will be held at NASA’s Kennedy Space Center press site, and will also be on NASA TV. Speakers during the press conference will include, Phil McAlister, acting director, Commercial Space Flight Development, Alan Lindenmoyer, manager, Commercial Crew and Cargo Program, Gwynne Shotwell, president of SpaceX and Mike McAleenan, Falcon 9 Launch Weather Officer 45th Weather Squadron.

If everything goes off without a hitch, a press conference will be held about an hour after splashdown takes place. If this mission is a success it will go along way to reinforcing the success of the first launch of the Falcon 9, held this past June. More importantly it will prove the viability of the Dragon spacecraft.

Russia Wants to Build “Sweeper” to Clean up Space Debris

Trackable objects in Low Earth Orbit. Image Credit: ESA

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Russia is looking to build a $2 billion orbital “pod” that would sweep up satellite debris from space around the Earth. According to a post on the Russian Federal Space Agency, Roscosmos’ Facebook site, (which seems to confirm an earlier article by the Interfax news agency) the cleaning satellite would work on nuclear power and be operational for about 15 years. The Russian rocket company, Energia proposes that they would complete the cleaning satellite assembly by 2020 and test the device no later than in 2023.

“The corporation promises to clean up the space in 10 years by collecting about 600 defunct satellites on the same geosynchronous orbit and sinking them into the oceans subsequently,” Victor Sinyavsky from the company was quoted as saying.

Sinyavsky said Energia was also in the process of designing a space interceptor that would to destroy dangerous space objects heading towards the Earth.

No word on exactly how the space debris cleaner would work, of how it would push dead satellites and other debris into a decaying orbit so that objects would burn up in the atmosphere, or if it might somehow gather up or “vacuum” debris. But at least someone is thinking about space debris and asteroid deflection and putting more than just a few rubles (60 billion of ’em) towards these concepts.

Sources: Xinhuanet, Facebook