Tag: spaceflight

Boeing is about to begin environmental tests on a new composite fuel tank for rockets.

12:52 pm

The competition heats up: Boeing is about to begin environmental tests on a new composite fuel tank for rockets.

Tanks made of composite materials have been a dream of space engineers for decades. Lockheed Martin tried to build them for the X-33, and their failure was essentially what killed that spacecraft. If Boeing is successful here and the composite tanks can then be put into a variety of launch rockets, the savings in weight will lower the cost of getting payloads to orbit significantly.

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As the NASA lunar probe LADEE nears its planned end — where it will crash onto the Moon — the scientists running it admit that they have as yet been unable to solve its primary scientific question about levitating lunar dust.

12:43 pm

As the NASA lunar probe LADEE nears its planned end — where it will crash onto the Moon — the scientists running it admit that they have as yet been unable to solve its primary scientific question about levitating lunar dust.

A major goal of the mission was to understand a bizarre glow on the Moon’s horizon, spotted by Apollo astronauts just before sunrise. “So far we haven’t come up with an explanation for that,” project scientist Rick Elphic, of NASA’s Ames Research Center in Moffett Field, California, said at a media briefing on 3 April. One leading idea is that the Sun’s ultraviolet rays cause lunar dust particles to become electrically charged. That dust then lofts upwards, forming a cloud that caught the light and the astronauts’ eyes.

LADEE carries an instrument that measures the impact of individual dust particles, as well as the collective signal from smaller particles. Lunar scientists had expected a certain amount of tiny dust to explain what the Apollo astronauts saw. But LADEE didn’t find it. “We did measure a signal that indicates that the amount of lofted dust has to be at least two orders of magnitude below the expectations that were based on the Apollo reports,” says Mihály Horányi, the instrument’s principal investigator, who is at the University of Colorado. Perhaps the dust lofting happens only occasionally, he suggests, and the astronauts were in just the right place at the right time to see it.

This remains an important question. Knowing what caused that horizon glow and knowing how often it occurs is essential knowledge for any future lunar base or research station.

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The launches at Kennedy, delayed because of a fire at an Air Force radar facility, have now been rescheduled.

12:33 pm

The launches at Kennedy, delayed because of a fire at an Air Force radar facility, have now been rescheduled.

This includes a military launch by an Atlas 5 rocket on April 10 and SpaceX’s next Falcon 9 launch to supply ISS. The Falcon 9 flight will also include an attempt to bring the first stage back to a soft vertical landing over water.

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Even as India successfully launched its second homemade GPS satellite today, its space agency ISRO announced that it will launch a test flight of a manned capsule in June using that country’s powerful GSLV rocket.

9:04 pm

The competition heats up: Even as India successfully launched its second homemade GPS satellite today, the head of of the Vikram Sarabhai Space Centre in India announced that it will launch a test flight of a manned capsule in June using that country’s powerful GSLV rocket.

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UrtheCast has released its first image of Earth, taken from one of its cameras on ISS.

9:50 pm

UrtheCast has released its first image of Earth, taken from one of its cameras on ISS.

The UrtheCast (pronounced Earth-Cast) system, which was installed (not without trouble) on the International Space Station at the end of 2013, is composed of two cameras. The Theia “medium resolution” camera took this shot; the full picture has a resolution of 3200×8000, or about 25 megapixels. The high-resolution device, which will capture video, is still being calibrated.

Eventually UrtheCast plans to provide free, constant, near-real-time video of the globe from far above — that is, when it’s not being rented out to parties interested in a quick satellite snap of an area. Powerful cameras able to respond quickly to such requests are in high demand by everyone from law enforcement to disaster-relief coordinators.

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Brian Binnie, the man who flew SpaceShipOne for Scaled Composites, has left that company for competitor XCOR

9:43 am

Brian Binnie, the man who flew SpaceShipOne for Scaled Composites, has left that company for competitor XCOR.

It might simply be the man got a promotion, but it also might be that he knows the problems SpaceShipTwo is having and sees his chances of flying there going down. His willingness to work for XCOR instead could also be looked at as a kind of endorsement of that company’s chances of success.

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Six Senators on Wednesday demanded the Air Force open up competition to more companies for launching its military satellites.

9:22 am

The competition heats up: Six senators on Wednesday demanded the Air Force open up competition to more companies for launching its military satellites.

U.S. senators on Wednesday urged the Air Force to allow more competition in the multibillion-dollar market for launching government satellites, citing rising costs and concerns about Russian-made engines that power some of the U.S. rockets.

Lawmakers said the Air Force’s budget plan for fiscal 2015 reduced opportunities for privately held Space Exploration Technologies (SpaceX) and others to gain a foothold in a program now dominated by the two biggest U.S. weapons makers, Lockheed Martin Corp and Boeing Co.

This demand also bodes badly in an indirect way for SLS. It indicates that these senators are beginning to notice the cost benefit of competition and of using the private market. Such a realization is going to eventually leak into their peanut brains about SLS, and that will not do that program any good, especially if the new commercial private companies like SpaceX continue to show success.

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In a vague announcement with unclear ramifications, a NASA memo today suspended “all contact with Russian government officials,” though it exempted all activities in connection with ISS.

12:38 pm

In a vague announcement with unclear ramifications, a NASA memo today suspended “all contact with Russian government officials,” though it exempted all activities in connection with ISS.

Given Russia’s ongoing violation of Ukraine¹s sovereignty and territorial integrity, until further notice, the U.S. Government has determined that all NASA contacts with Russian Government representatives are suspended, unless the activity has been specifically excepted. This suspension includes NASA travel to Russia and visits by Russian Government representatives to NASA facilities, bilateral meetings, email, and teleconferences or videoconferences. At the present time, only operational International Space Station activities have been excepted. In addition, multilateral meetings held outside of Russia that may include Russian participation are not precluded under the present guidance.

It appears they are suspending all NASA activities with Russia except ISS, which means that the most important and the bulk of the cooperative work will continue. However, it does mean that the Obama administration has decided to politicize NASA’s operations with Russia in a way that has not been done since the fall of the Soviet Union.

I will be doing a segment on John Batchelor tonight on this developing story.

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Scientists from the joint European/Russian ExoMars rover mission have narrowed their candidate landing sites to four.

9:43 am

Scientists from the joint European/Russian ExoMars rover mission have narrowed their candidate landing sites to four.

Last week, 60 scientists met at ESA’s European Space Astronomy Centre near Madrid to discuss eight potential sites. On 27 March, they cast an informal vote, and four sites emerged as favourites: Mawrth Vallis, Oxia Planum, Hypanis Vallis and Oxia Palus. An expert working group tasked with recommending a final landing site will now consider the proposals, before announcing a formal shortlist of three or four sites in June. Following detailed studies of the shortlisted sites, the panel will make a single recommendation to ESA and Roscosmos in late 2016.

This is maybe the most risky mission to Mars in decades, as the landing design is coming from the Russians, who have not had a successful interplanetary mission since the era of the Soviet Union, and even then had a 100% failure rate for their missions to Mars. (On a more optimistic note, the European Mars Express mission used a Russian rocket to take off, making it the first Mars mission with Russians participation that actually succeeded.)

One of the factors that has made this mission more risky is the fact that the U.S. was once a participant and backed out very late in the game. The Russians are our replacement, and have had to scramble to catch up.

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The German-built comet lander Philae has been successfully reactivated on Rosetta.

9:24 am

The German-built comet lander Philae has been successfully reactivated on Rosetta.

Philae will be ejected from the Rosetta mothership in November to latch itself onto the comet’s icy surface with harpoons and screws. The lander has its own suite of science instrumentation to take the first-ever photos and measurements from a comet’s surface. Engineers plan a four-week commissioning phase for Philae to check on its health and activate the lander’s 10 instruments.

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China’s new spaceport and the giant rocket it is being built for.

9:15 am

The competition heats up: China’s new spaceport and the giant rocket it is being built for.

The combination of the planned rocket, called the Long March 5 — and its derivatives — matched with the Wenchang Launch Center, China’s new sprawling spaceport, underscores the country’s shifting space gears. It enables China’s space station ambitions, while also boosting the nation’s plans for interplanetary exploration, as well as accomplishing human treks to the moon.

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NASA is looking to extend its commercial cargo contracts with SpaceX and Orbital Sciences until 2017.

8:44 am

NASA has extended its commercial cargo contracts with SpaceX and Orbital Sciences until 2017.

Since the notice says that “the modifications would be made ‘at no cost’ to the agency, and that they would be “executed one year at a time,” the extension is probably just designed to give the two companies sufficient time to launch all their cargo missions in the present contracts.

Nonetheless, the posting also said that other companies could compete for NASA’s business during this extension, which leaves the door open for more competition.

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Orbital Sciences has begun construction of the 81satellites that will make up Iridium’s second generation communications satellite constellation.

9:04 am

The competition heats up: Orbital Sciences has begun construction of the 81satellites that will make up Iridium’s second generation communications satellite constellation.

Not only is this big business for satellite construction — 81 satellites is a big order — someone will have to launch those satellites. Even if they are launched in groups of five, which was how it was done for the first generation, it will still take more than 16 launches to get them all in orbit. That will be a lot of business for some lucky rocket company.

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The Air Force’s X-37B mini-shuttle presently in orbit has now set a new record for the spacecraft’s longest flight.

8:59 am

The Air Force’s X-37B mini-shuttle presently in orbit has now set a new record for the spacecraft’s longest flight.

The X-37B space plane currently in orbit in flying the Orbital Test Vehicle 3 (OTV-3) mission, the third long-duration flight of the unmanned Air Force spaceflight program. The miniature space shuttle launched on Dec. 11, 2012 and is surpassed the record for longest X-37B spaceflight on Wednesday (March 26). Until now, the record for the longest X-37B mission is 469 days, set by the program’s OTV-2 mission that was launched in 2011.

The OTV-3 mission in orbit today now uses the first of the Air Force’s two X-37B space plane vehicles. The same spacecraft was used to fly the first-ever X-37B mission (the 225-day OTV-1 flight in 2010), while a second vehicle flew the longer OTV-2 mission a year later.

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A fire at a radar site used by the Air Force to track rockets lifting off at the Kennedy Space Center has delayed all launches there, including SpaceX’s next Falcon 9 flight.

8:40 am

A fire at a radar site used by the Air Force to track rockets lifting off at the Kennedy Space Center has delayed all launches there, including SpaceX’s next Falcon 9 flight.

Initially the Air Force thought they could make repairs relatively quick, but now think it could take as long as 45 days. No new launch date for the Falcon 9/Dragon flight as yet been set.

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Though engineers still don’t know why the Soyuz spacecraft was oriented incorrectly, thereby preventing a scheduled engine firing, they have uploaded new software and have subsequently executed two additional burns successfully.

10:10 pm

Though engineers still don’t know why a Soyuz spacecraft carrying three astronauts to ISS was oriented incorrectly — thereby preventing a scheduled engine firing yesterday — they have uploaded new software and have subsequently executed two additional burns successfully.

The engine firings are excellent news, since they demonstrate that the capsule can make the necessary orbital maneuvers to get it to ISS.

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An expected engine burn on board the Soyuz capsule taking three astronauts to ISS did not take place as scheduled, forcing at minimum a two day delay in the rendezvous and docking.

8:46 am

An expected engine burn on board the Soyuz capsule taking three astronauts to ISS did not take place as scheduled, forcing at minimum a two day delay in the rendezvous and docking.

[NASA spokesman Rob] Navias said the engine burn was aborted due to a problem with the Soyuz’s attitude control system, but further details were not immediately available. “Right now we don’t understand exactly what happened,” a mission manager at Russian Mission Control told the Soyuz crew late Thursday. Ground controllers planned to download data from the Soyuz and determine whether the glitch was due to a hardware or software problem. [emphasis mine]

Though the astronauts are not in any immediate danger, this is very worrisome. Indications from various other news stories suggest the problem was software related, which in a sense is a good thing. They would still have the option to manually fire their engines to do a manual rendezvous and docking. However, if it isn’t a software issue, and the vagueness of the reports so far makes me wonder about this, they might instead be stranded. Let us hope not.

Update: This report gives a little more information. It appears the capsule itself was not in the right orientation at burn time, and the computer software, sensing this, canceled the burn. If so, the problem might be software (incorrectly gauging the position of the spacecraft) or mechanical (something failing so that the capsule is not oriented correctly). Engineers need to find out which.

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Sierra Nevada has subcontracted Lockheed Martin to help build its Dream Chaser spacecraft.

6:11 pm

Sierra Nevada has subcontracted Lockheed Martin to help build its Dream Chaser spacecraft.

The article is about the beginnings of construction at the Michoud Assembly facility in Louisiana, but to me the significant fact revealed by this article is that Jim Crocker of Lockheed Martin is involved in the effort. Crocker was one of the key engineers who came up with the solutions that helped return focus to the Hubble Space Telescope back in 1993. He is one of the country’s best aerospace engineers, and his participation here is excellent news.

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DARPA picks Boeing to build a test design of an air-launched satellite launcher.

8:58 am

The competition heats up: DARPA has chosen Boeing to build a test design of an air-launched satellite launcher.

This engineering research is in parallel with the airborne launcher research of Scaled Composites (on SpaceShipTwo) and Stratolauncher. When you add SpaceX’s effort to make its first stage reusable, you get a real sense where the future of rocket design is heading: rockets in which the first stage is entirely reusable, returning safely to Earth either by a horizontal or vertical landing.

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Curiosity has reached another area of interesting terrain: rows of layered curvy rocks.

10:18 pm

Curiosity has reached another area of interesting terrain: rows of layered curvy rocks.

The science team has been hunting for tasty rock outcrops suitable for the first drilling campaign since she departed the dried out lakebed at Yellowknife Bay in July 2013 and began her epic trek across the floor of Gale Crater towards the base of Mount Sharp. With each passing Sol, or Martian day, Mount Sharp looms larger and larger and the historical layers with deposits of hydrated minerals potentially indicative of an alien habitable zone come ever clearer into focus.

The panoramas are quite spectacular as the rover continues its journey toward Mt Sharp.

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