Tag: spaceflight

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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China’s Yutu rover is still functioning but cannot move.

9:12 am

China’s Yutu rover is still functioning but cannot move.

Last week Yutu and its companion spacecraft, the Chang’e 3 Moon lander, awoke from a period of dormancy after the frigid, two-week lunar night — the third awakening since landing on 14 December, Chinese scientists said this week at the Lunar and Planetary Science Conference in The Woodlands, Texas. The probes continue to gather data and send it back to Earth.

But Yutu may never move more than the 100–110 metres it has already travelled from its landing site — in the Mare Imbrium. Mission officials had hoped that Yutu would travel to the rim of a nearby crater and explore it, but a mechanical failure in Yutu’s drive system has stilled the rover since late January.

I wish they would get their story straight. This article suggests that the problem wasn’t in the circuit that controls the storage of equipment during the long lunar night, as reported previously, but in the system that actually moves the rover.

It also appears from the story above that scientists were disappointed by the amount of information released at the Texas conference.

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According to the former CEO of Arianespace, now head of the French space agency, SpaceX’s Falcon 9 costs significantly less to launch than the Ariane 5

10:29 pm

According to the former CEO of Arianespace, now head of the French space agency, SpaceX’s Falcon 9 costs significantly less to launch than the Ariane 5.

How big is the difference? Jean-Yves Le Gall, who until mid-2013 was chief executive of Evry, France-based Arianespace and is now president of the French space agency, CNES, addressed the point in Feb. 25 testimony to the French Senate. According to Le Gall, launching a satellite on an Ariane 5 costs around 100 million euros ($137 million). After subtracting the amount of European Space Agency subsidies to Arianespace, the per-satellite cost drops to about $100 million, he said.

Hawthorne, Calif.-based SpaceX, he said, would charge $60 million to $70 million to launch the same satellite aboard the Falcon 9. In fact SpaceX has charged even less than that to its first few commercial customers.

It is for this reason that Arianespace is struggling to decide how to build its next generation rocket. They have find a way to do it cheaper, something that is very difficult for this multi-headed European conglomerate to do.

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Putting a spacecraft back in the orbit it was intended, thirty-one years later.

9:14 am

Putting a spacecraft back in the orbit it was intended, thirty-one years later.

The spacecraft, ISEE-3, was intended to study the solar wind and the connection between the Sun and the Earth. In 1986 it was diverted instead to take a look at Halley’s Comet. Now there is an opportunity to return it to its original task, assuming engineers can wake it up after three decades.

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Arianespace and the Russian-owned Sea Launch are seeking to get the restrictions against them removed so that they can sell their services to more customers.

9:26 am

The competition heats up: Arianespace and the Russian-owned Sea Launch are seeking to get the restrictions against them removed so that they can sell their services to more customers.

Arianespace wants to sell its launch services to the U.S. government, something it is not allowed to do right now because of U.S. restrictions. These are the same kinds of restrictions that has prevented SpaceX from launching military satellites and which that company is now contesting.

Russia meanwhile wants to use Sea Launch for its own payloads, but because Sea Launch’s platform is based in California, the Russian government won’t allow their payloads on it because of security reasons. They want the platform moved to Russia so that they can use their own company to launch their own satellites.

The article also describes how Japan is trying to reduce the cost of its H-2A rocket by 50% so that it can become more competitive.

All in all, I would say that the arrival of SpaceX has done exactly what was predicted, shaken the industry out of its doldrums. How else to explain this sudden interest in open competition and lowering costs? These companies could have done this decades ago. They did not. Suddenly a new player arrives on the scene, offering to beat them at their own game. It is not surprising that they are fighting back.

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The next Dragon launch to ISS has been delayed for two weeks because of the detection of contamination that could affect some of its research cargo.

11:26 pm

The next Dragon launch to ISS has been delayed for two weeks because of the detection of contamination that could affect some of its research cargo.

[T]he launch was put on hold, sources said, when engineers noticed contamination of some sort on the Dragon’s lower unpressurized trunk section. Two of six electrically powered payloads aboard the Dragon are mounted in the trunk section — a first for this mission — and engineers were concerned the contamination might “outgas” in orbit and cause problems for the station-bound hardware.

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Lockheed Martin announces they will either give a full refund or refly a payload for free if their Atlas rocket fails at launch.

8:46 am

The competition heats up: Lockheed Martin announced on Wednesday that they will either give a full refund or re-fly a payload for free if their Atlas rocket fails at launch.

This means that Lockheed Martin’s customers will no longer have to shop or pay for insurance. Instead, the company is providing it for them free, thus lowering the cost for those customers.

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The Russian company that owns the Proton rocket is considering a redesign that would allow them to launch two satellites on one rocket.

8:36 am

The competition heats up: The Russian company that owns the Proton rocket is considering a redesign that would allow them to launch two satellites on one rocket.

Launching two or more satellites during a single launch is not ground-breaking technology, but the Russian have never done it with their Proton. If they make this change, it will allow them to reduce the cost for a commercial launch considerably, thus making them more competitive against companies like SpaceX.

That they have decided to consider this now, after almost three decades of commercial operation since the fall of the Soviet Union, is more proof that the low prices of SpaceX are forcing innovation and an effort to lower costs across the entire launch market.

Update: My statement above about Proton never launching more than one satellite is wrong. They have done it numerous times, something I am very aware of but for some reason completely forgot when I was writing this post. (The jet lag from the trip to Israel must still be affecting my brain.) In fact, they have just rolled to the launchpad a Proton with two communications satellites on board, a fact that makes the story at the first link above very puzzling.

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The comet that the European probe Rosetta will visit in August has awakened.

11:37 am

The comet that the European probe Rosetta will visit in August has awakened.

Already 67P/Churyumov-Gerasimenko is approximately 50 percent brighter than in the last images from October 2013. While the comet has moved another 50 million kilometers closer to Earth in this time (and 80 million kilometers closer to the Sun), the increase in brightness cannot be explained by the smaller distance alone. “The new image suggests that 67P is beginning to emit gas and dust at a relatively large distance from the Sun”, says Colin Snodgrass from the MPS. This confirms a study presented by Snodgrass and his colleagues last year in which they had compared the comet’s brightness as recorded during its previous orbits around the Sun. The calculations showed that already in March 2014 its activity would be measurable from Earth.

Update: A preprint paper published today on the astro-ph website predicts that Rosetta will see an unusual topographical feature on the comet’s surface when it arrives in August:

Comet 67P/Churyumov-Gerasimenko. The Secular Light Curve (SLC) of this comet exhibits a photometric anomaly in magnitude that is present in 1982, 1996, 2002 and 2009. Thus it must be real. We interpret this anomaly as a topographic feature on the surface of the nucleus that may be a field of debris, a region made only of dust or an area of solid stones but in any case it is depleted in volatiles. We predict that images taken by spacecraft Rosseta will show a region morphologically different to the rest of the nucleus, at the pole pointing to the Sun near perihelion.

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On Saturday SpaceX successfully conducted a dress rehearsal countdown and static fire engine test of the Falcon 9 rocket that will loft a Dragon capsule to ISS next week.

8:42 am

On Saturday SpaceX successfully conducted a dress rehearsal countdown and static fire engine test of the Falcon 9 rocket that will loft a Dragon capsule to ISS next week.

The results of the test itself have not been released, but that it was completed suggests all is well for the upcoming launch.

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Neil deGrasse Tyson poo-poos private space.

8:39 am

Standing on the wrong side of history: Neil deGrasse Tyson poo-poos private space.

Tyson described space travel as “a long-term investment”: “It’s an investment that private enterprise cannot lead.” He recalled the excitement around SpaceX’s delivery of cargo the International Space Station, which sparked discussion about whether private companies would replace government as the main engine behind space travel. Tyson’s response? “They brought cargo to the space station! NASA’s been doing that for 30 years!”

Tyson, who also said that government is the only one willing to do exploration and that private space only comes after, will probably push this agenda on his new Cosmos television series.

On this subject, Tyson has the outdated opinions of today’s leftwing academic community. And he is wrong. The only reasons private space didn’t lead in the past fifty years is because our federal government was against it. It wanted the turf all to itself and the private companies who could have done it were willing to acquiesce. Now that this monopoly is crumbling, stand by to see private enterprise dominate the show.

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Virgin Galactic is close to getting its FAA launch license.

5:19 am

According to the company’s CEO, Virgin Galactic is close to getting its FAA launch license.

The CEO also said that they hope to fly their first suborbital flight this summer after several lower altitude powered flights.

At this point I will believe this when I see it. Virgin Galactic has made promises like this repeatedly for the past three years, none of which have come true. The time has come for them to put up, or shut up, or finally tell us the truth.

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In testimony to Congress Wednesday, Elon Musk described how allowing SpaceX to compete as a military launch provider would significantly lower costs.

7:49 am

The competition heats up: In testimony to Congress Wednesday, Elon Musk described how allowing SpaceX to compete as a military launch provider would significantly lower costs.

[Senator Richard Shelby (R-Alabama)] said the Air Force EELV contracts require compliance with complex oversight and accounting practices that add costs to the program. As a result, he suggested comparing the cost of a SpaceX Falcon 9 and a ULA Atlas or Delta was comparing apples and oranges.

Musk agreed “there is additional cost for U.S. government missions due to the mission assurance process.” And he said SpaceX’s costs for launching a military mission would be 50 percent higher than for a purely commercial launch. Even so, he said, SpaceX could provide a Falcon 9 rocket for around $90 million as opposed to nearly $400 million for a ULA launcher. “Even when you add the Air Force overhead, there’s still a huge difference,” he said. [emphasis mine]

The only reason that Congress is against eliminating the military launch monopoly given to ULA and allowing SpaceX to compete is because the monopoly feeds a lot of pork to the districts of certain but powerful legislators like Shelby.

ULA and Shelby are losing the argument however. The cost differences are too high, and SpaceX has proven that it can do the job efficiently and effectively. Eventually the monopoly will die, and the sooner the better.

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China finally reveals Yutu’s problem: the failure of a control circuit prevents it from storing its solar panels during lunar night.

8:02 am

China finally reveals Yutu’s problem: the failure of a control circuit prevents it from storing its solar panels during lunar night.

A functioning control circuit is required to lower the rovers mast and protect the delicate components and instruments mounted on the mast from directly suffering from the extremely harsh cold of the Moon’s recurring night time periods. “Normal dormancy needs Yutu to fold its mast and solar panels,” said Ye. The high gain communications antenna and the imaging cameras are [also] attached to the mast. They must be folded down into a warmed electronics box to shield them from the damaging effects of the Moon’s nightfall when temperatures plunge dramatically to below minus 180 Celsius, or minus 292 degrees Fahrenheit.

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