Tag: spaceflight

Falcon Heavy launchpad work begun

8:50 am

The competition heats up: SpaceX has begun the construction work necessary to convert the launchpad it will use at the Kennedy Space Center for its first test flight of the Falcon Heavy rocket, now scheduled for summer 2015.

Most of the current work appears to be taking place on the perimeter area of the pad, with the construction of a hanger building – known as the Horizontal Integration Facility (HIF) – that will house the Falcon Heavy rocket and associated hardware and payloads during processing. During rollout, the Falcon Heavy will be transported atop the Transporter Erector (TE), which will ride on rails, up the famous 39A ramp that once saw Space Shuttle and Apollo stacks arrive via the Crawler Transporters.

The July launch date is considered preliminary and a target date only and is of course subject to change.

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Russias pulling out of ISS in 2020

8:41 am

Another news story from Russia has confirmed that the Russian government intends to break off its partnership at ISS in 2020, and that it will instead start assembling its owns space station in 2017 and will use some modules now docked with ISS to do it.

This event was always possible, and one of the many reasons I always opposed Bill Clinton’s decision to form the ISS partnership. The partnership acted as a crutch for NASA and the U.S, allowing us to avoid spending the money to build a self-sufficient space station. When the Russians leave in 2020 ISS will lack some crucial facilities that it now depends on, and will require some fast scrambling and additions to the station by NASA to keep it going at that point.

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Philae spotted before and after first bounce

8:32 am

A close review of a series of Rosetta images has identified Philae’s first landing site, as well as the spacecraft itself as it approached and bounced away.

The second link is especially amazing, as it includes a gif animation of the landing site, showing the before situation, the puff of dust just after impact, and then Philae drifting away with its shadow hitting the surface of the comet.

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Philae has gone to sleep

7:49 pm

Despite several attempts to reposition the lander to get more sunlight to its solar panels, Philae went into hibernation on Saturday.

There is still a chance the lander will come back awake, but right now the Rosetta science team considers its mission complete. Meanwhile, Rosetta will continue its flight with Comet 67P/C-G, tracking it closely for the next year as it makes its next close approach to the sun.

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Drill baby drill!

8:57 am

Faced with a loss of power in Philae’s batteries due to a lack of sunlight, scientists plan to activate the lander’s drill today.

This action might push the lander off the surface again, but it also might move it into daylight. At the least it might get them some geological data.

If the reserve battery runs out of power and the spacecraft shuts down on Saturday, there is still a chance that it could come back to life at a later time, should Comet 67P/C-G’s position change enough to put its solar panels in daylight and it can charge its main battery.

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Engineers have until Saturday to reposition Philae before its batteries go dead

3:58 pm

Sitting in the shade under a cliff and on its side, engineers have until Saturday to nudge it into brighter territory before Philae’s batteries go dead.

One of Philae’s major scientific goals is to analyse the comet for organic molecules. To do that, the lander must get samples from the comet into several different instruments, named Ptolemy, Cosac and Civa. There are two ways to do this: sniffing and drilling. Sniffing involves opening the instruments to allow molecules from the surface to drift inside. The instruments are already doing this and returning data.

Drilling is much riskier because it could make the lander topple over. Newton’s third law of motion says that for every action there is an equal and opposite reaction. In the minuscule gravity of the comet, any movement on Philae will cause motion. The drill turning one way will make Philae want to turn the other. Pushing down into the surface will push the lander off again. “We don’t want to start drilling and end the mission,” said Bibring.

But the team has decided to operate another moving instrument, named Mupus, on Thursday evening. This could cause Philae to shift, but calculations show that it would be in a direction that could improve the amount of sunlight falling on the probe. A change in angle of only a few degrees could help. A new panoramic image will be taken after the Mupus deployment to see if there has been any movement.

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Japanese investor sues Excalibur Almaz

9:24 am

The billionaire investor in the company Excalibur Almaz is suing the lawyer in charge for fraud.

Using the $49 million the billionaire invested, the lawyer purchased several Soviet-era capsules and a Almaz space station module from the Russians, claiming they would use this equipment, once refurbished, to establish a commercial space company. What the lawyer, Art Dura, did not tell anyone was, as the lawsuit explains:

“The purchase contracts had to be approved by the Russian government, and unbeknownst to plaintiff … expressly excluded the right to modify the Russian hardware, thus relegating it to display uses only! The items were only museum pieces, a secret Dula would keep until well after he acquired control of plaintiff’s investment.”

Dula’s vehicle for the scheme was Excalibur Almaz Limited, an entity he set up in the Isle of Man, into which he transferred Horie’s $49 million investment, according to the complaint.

What I find amazing is that the company, Excalibur Almaz, also put out a lot of press releases describing how they were going to use this Russian equipment as part of their space effort. I reported on these releases myself. That Dura was able to keep the contract terms secret, that even the Russians didn’t publicly protest his false statements, is most interesting. Apparently, the Russians were glad to take his money and even help with the fraud, by not revealing the truth when Dura made public claims that were impossible according to the contract.

This story illustrates one of the less obvious investment risks inherent in a new industry such as commercial space. Not only can vehicles crash and burn, there are also a lot of con artists out there willing to take advantage of naive individuals who are so passionate about space exploration that they don’t look closely at what they are doing.

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Philae’s status on the surface

8:55 am

European engineers have released an overall status update on Philae’s generally good condition after its landing on Comet 67P/C-G.

Later on 12 November, after analysing lander telemetry, the Lander Control Centre (in Cologne) and Philae Science, Operations and Navigation Centre (SONC, Toulouse) reported;There were three touchdowns at 15:34, 17:25 and 17:32 UTC; in other words, the lander bounced. The firing of the harpoons did not occur. The primary battery is working properly. The mass memory is working fine (all data acquired until lander loss of signal at 17:59 UTC were transmitted to the orbiter). Systems on board the lander recorded a rotation of the lander after the first touchdown. This is confirmed by ROMAP instrument data, which recorded a rotation around the Z-axis (vertical).

The lander did receive some power from the solar panels on Wall No. 2 (technical description of the lander’s solar walls here), but it appears that parts of the lander were in shadow during the time that last night’s surface telemetry were being transmitted.

An additional update here.

Philae is between a rock and a hard place. More specifically, it’s on its side, one leg sticking up in the air — and in the shadows of a looming crater wall a few meters away. Solar panels are receiving only about 1.5 hours of light a day, when the goal was for 6 or 7 hours per day to recharge the lander’s batteries. Drilling into the subsurface would have to wait until the very end of Philae’s 60 hours of battery life — for fear that it could upset the lander. Yet mission leaders were largely upbeat about being alive and doing science. Most of the lander’s 10 instruments were taking data, and engineers were exploring options to use the spring of the lander legs or other ground-poking instruments to jostle the lander into a more favorable position.

Even more here, including the first image from the surface.

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Philae might have bounced

4:07 pm

Data from the Philae lander suggests that, when the spacecraft’s harpoons failed to fire, the probe might have bounced and then settled to the surface.

[T]elemetry from the craft suggested it might have drifted off the surface after landing and started to turn. This subsequently came to an end, which the German Space Agency official interpreted as a possible “second landing” on Comet 67P. This “bounce” was always a possibility, but had been made more likely by the failure of the harpoons to deploy, and the failure of a thruster intended to push the robot into the surface.

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A comet picture taken by Philae on the way down

1:06 pm

Comet 67P/C-G as seen by Philae during its descent

I am not sure if the actual landing site is visible in this image. I don’t think so as nothing seems to match what was on the earlier close-up. Moreover, the Rosetta website does not say.

No images on the surface have yet been released. There are also issues that could prevent a full success.

However, while the lander has touched down on the comet using its harpoons, scientists said that it had not yet deployed its anchors which meant that it was not completely attached to the surface. The surface was much softer than they expected, so there were some concerns that it was not securely fixed on the comet – although from a software point of view things seemed to be fine. Engineers will attempt to fire the anchors again soon in order to keep Philae attached to the surface of the comet.

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Philae has landed successfully!

9:14 am

Philae has landed successfully on Comet 67P/C-G.

Philae is on the surface, its harpoons have fired and the landing gear has been moved inside, and Philae is in contact. It’s incredible! Massive smiles on everyone’s faces. The room went mad. Twice — when we first had the hint, and then when Stephan Ulamec and Andrea Accomazzo confirmed it. Unbelievable.

More information and data will be coming in a few hours. Stay tuned.

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Philae is go for separation, despite problem

12:25 am

Engineers have given a go for the separation of the Philae lander from Rosetta, despite the failure of a thruster to operate.

During checks on the lander’s health, it was discovered that the active descent system, which provides a thrust upwards to avoid rebound at the moment of touchdown, cannot be activated.

At touchdown, landing gear will absorb the forces of the landing while ice screws in each of the probe’s feet and a harpoon system will lock Philae to the surface. At the same time, the thruster on top of the lander is supposed to push it down to counteract the impulse of the harpoon imparted in the opposite direction. “The cold gas thruster on top of the lander does not appear to be working so we will have to rely fully on the harpoons at touchdown,”says Stephan Ulamec, Philae Lander Manager at the DLR German Aerospace Center. “We’ll need some luck not to land on a boulder or a steep slope.”

Update: Separation has occurred and signal reacquired from Philae. We wait for landing.

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Close-up image of Philae’s landing site

9:32 am


Agilkia landing site for Philae

Inset of landing site

In the preparation to Wednesday’s landing of Philae on Comet 67P/C-G, Rosetta’s science team has released a great image of the landing site, shown above. To the right is a higher resolution inset of the site itself, with the smallest object visible about 8.5 feet across.

Looking at this inset, there are some obvious worries that we all should be aware of prior to the landing attempt. Though the Agilkia landing site is generally more smooth than most of the comet’s surface, it still has significant hazards. The lower part is strewn with boulders and rocks, many of which are quite large. Any one of these could do serious harm to Philae should it land on them.

Even more interesting is the upper part of the landing site. Though very smooth, the image suggests to me that this is a very thick pile of softly packed material. Philae might land there and quickly sink below the surface, where its cameras will be able to see nothing.

Nonetheless, the science team has also released this outline of Philae’s science timeline after landing. The lander will also be taking images of both Rosetta and the comet during its descent, so even if the landing is a failure we will still get some worthwhile data.

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Comet Siding Spring’s fly-by of Mars changed the planet’s atmosphere

8:57 am

Data obtained by the various Mars orbiters during the close fly-by of Comet Siding Spring of Mars has revealed that the comet created a new temporary layer in the planet’s atmosphere.

The European Space Agency’s Mars Express spacecraft detected an increase in electrons in Mars’ upper atmosphere, partly ionising it. This was attributed to fine cometary dust penetrating the atmosphere, which led to a meteor storm of thousands of meteors per hour. The increase in electrons led to the creation of a temporary new layer of charged particles in the ionosphere, which runs from an altitude of 120 kilometres to several hundred kilometres above. This is the first time such an event has been seen, even on Earth the extra density of electrons was measured to be five to ten times higher than normal by NASA’s Mars Reconnaissance Orbiter. Another NASA spacecraft, MAVEN, which also observed the new layer in the ionosphere, will monitor for any long-term events as it goes about its regular duties of studying Mars’ atmosphere.

MAVEN’s Imaging Ultraviolet Spectrograph was able to ascertain the species of ions that flooded into the ionosphere from the comet, the first time a comet that has come direct from the distant Oort Cloud has been sampled in this way. It detected the signal of magnesium, iron and sodium ions following the meteor shower, a signal that dominated Mars’ ultraviolet spectrum for hours afterwards, taking two days to dissipate.

The chemistry that MAVEN detected appears superficially somewhat similar to the chemistry that Rosetta is detecting at Comet 67P/C-G, though there are differences.

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China’s struggle to compete with SpaceX

8:41 am

This Aviation Week story provides a detailed update on China’s effort to build a new family of Long March rockets that are less expensive to operate and can effectively compete with SpaceX.

Two main take-aways from the article. First, the first flight of the Long March 7, a direct competitor with the Falcon 9, has been seriously delayed. Originally expected to fly in 2013, that first flight has apparently been pushed back to 2015.

Second, even with extensive cost savings, the Long March 7 will still cost a customer more than a Falcon 9, $70 million vs $61 million.

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Alternative rockets and 2015 launch dates for Cygnus

8:54 am

The heat of competition: Orbital Sciences has pinpointed available launch slots and alternative rockets for getting Cygnus into orbit in 2015.

[Orbital CEO David] Thompson said Wednesday the company has narrowed its options to three launch providers which have openings as early as the second quarter — between April 1 and June 30 — of next year. Two of the launch providers are based in the United States. Orbital could also launch Cygnus missions with a European-based company, Thompson said. The contractors under consideration are presumably United Launch Alliance, SpaceX and Arianespace.

Unlike Virgin Galactic’s claims in my previous post, I find Thompson’s prediction here quite likely. His main problem is not technical but political. He has to convince his competitors to help him, and this story is his first shot across the bow in that negotiation. By making these facts public, Thompson applies pressure on these other companies to agree. And though the request is unstated, he is also enlisting NASA’s aid, since the agency is certain to back him in this negotiation and apply its clout in his favor.

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Virgin Galactic vows to fly again by April

8:34 am

The heat of competition: During a press tour of its Mojave facilities this week Virgin Galactic’s CEO revealed that the company expects to begin flying its replacement to SpaceShipTwo by April.

George Whitesides, the company’s chief executive, said construction of the second spaceship is already 65 per cent complete. Like its doomed predecessor, Enterprise, the new spaceship’s name is a tribute to both Nasa and Star Trek. It will be called SS Voyager, the Sunday Times reports.

Whitesides also said that LauncherOne, designed to put very small payloads into orbit, is 18 months away from its first flight.

I hope this predictions are true, but coming from Virgin Galactic I think I can be forgiven if I am very skeptical. Nonetheless, in referring to the new ship I will make it a policy to call it Voyager from here on out to distinguish it from the first ship.

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Bringing Dream Chaser home

9:47 am

The competition heats up: At an space industry conference this week Sierra Nevada outlined the ability of Dream Chaser to land at almost any airport, including the many financial and safety advantages of that flexibility.

The story notes that because Dream Chaser would not need an unusually long runway, it could land at most airports. Also, because it would have no hazardous materials on board, removing it from the runway after landing would be simple and straightforward. You would simply tow it away. The biggest advantage of this, howevr, is that if the spacecraft was docked at ISS and there was an emergency that required immediate evacuation, bringing Dream Chaser and its passengers home to a runway will be possible any time.

This presentation is part of Sierra Nevada’s sales effort to find new backers for their spacecraft, now that NASA has begged out. I think they make a good sales pitch. I hope someone with money agrees.

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The November 12 timeline of events for Philae’s landing on a comet

10:16 am

ESA has released a detailed timeline of events on November 11-12, when Rosetta’s Philae lander will be released and land on Comet 67P/C-G. They have also released a much more readable summary of the most critical events, describing what will be happening.

For Americans, these events will be occurring from around 3 pm (Eastern) November 11, when the process begins, to 12 pm (Eastern) November 12, when Philae will send back the first signals after landing. Much of the most critical events will take place in the wee hours of the morning.

Meanwhile, one of Rosetta’s instruments has confirmed the presence of water vapor and carbon dioxide in the jets seen near the comet’s narrow neck.

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Orion heat shield redesigned before its launch?

9:59 am

Even before Orion’s first flight next month to test its heat shield, engineers are proposing a major change in the shield’s design and manufacture.

The Orion heat shield’s titanium skeleton and carbon fiber skin was fabricated by Lockheed Martin — the craft’s prime contractor — in Colorado. The skeleton was shipped to Textron Defense Systems in Massachusetts for installation of a fiberglass-phenolic honeycomb structure. More than 330,000 individual cells make up the honeycomb, and Textron technicians — using a special dispensing gun — filled the cells by hand with a material called Avcoat. The Avcoat insulation is supposed to ablate away during the Orion spacecraft’s re-entry, protecting the underlying structure from searing temperatures. The Apollo moon capsule used the same type of manually-applied material for its heat shield, and it worked so well Lockheed Martin and NASA decided to dust off the design.

Engineers scaled up the heat shield for the Orion crew capsule, which is about four feet wider at its base than the Apollo command module. “That’s what worked for Apollo, and that’s what we’ll work with for this mission,” Bray said, referring to the EFT-1 launch in December.

But a review of the heat shield on the Orion spacecraft set for launch Dec. 4 revealed the Avcoat was slightly more uneven than expected, according to Jim Bray, crew module director at Lockheed Martin, Orion’s prime contractor.

It also appears that it is too expensive to build the shield by hand, as it was done during Apollo. Instead, they intend to build future heat shields as single blocks assembled not by hand but by machine.

This is another example of why SLS/Orion is an incredible money black hole. What is the point of next month’s test flight of the heat shield if the shield they are testing is not going to be used on future flights?

Meanwhile, the press (apparently ignorant and uninformed about this subject and brainwashed by a NASA Orion press event) is filled with numerous stories claiming that this test flight is NASA’s first step to getting to Mars. What hogwash.

I especially like this quote from the space.com article:

On Dec. 4, NASA officials are expected to launch the Orion spacecraft on its first test flight, putting the capsule through its paces in space before it splashes down in the Pacific Ocean. The goal of the flight is to see how some key Orion systems — like its huge heat shield and parachutes — work before launching humans into deep space sometime in the future. [emphasis mine]

Yet, most of the heat shield test data obtained by this test flight will be worthless and inapplicable to future Orion capsules. In other words, this test flight is, as I said, hogwash, a public relations stunt to sell Orion to Congress and to uneducated reporters. It is also an enormous waste of taxpayer money and the limited resources NASA has.

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Solid rocket motors for American rockets?

9:34 am

The competition heats up: Even as ULA and Blue Origin begin work building an American engine to replace the Russian engines on the Atlas 5 rocket, ATK is offering its solid rocket motors for both Atlas 5 as well as Antares.

The company’s sales pitch is that they can get their product ready faster and cheaper. And since they are merging with Orbital Sciences anyway, I will not be at all surprised if Antares ends up with ATK solid rocket motors for its first stage.

As for Atlas 5, this sales pitch is actually aimed at Congress, which could step in and force ULA to buy ATK motors instead of Blue Origin’s new engine, even if this switch is against the wishes of ULA. As foolish as this might seem, the politics of pork (ATK provides more jobs than Blue Origin) could make it happen.

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