Tag: spaceflight

Starting a fire in space, on purpose

11:47 am

Engineers plan to intentionally start fires in every Cygnus capsule heading for ISS this year, beginning with the next on Tuesday, but they will wait each time until the freighter has been docked, unloaded, and has left the station.

“The specific goals of the SAFFIRE experiments are to investigate the spread of a large-scale fire in microgravity, essentially trying to answer the questions of how large does a fire get and how rapidly does it spread, or how long does it take to get to the point of being really hazardous to the crew.”

NASA intends to run SAFFIRE experiments on three consecutive Cygnus spacecraft launching through the end of this year. The SAFFIRE 1 and 3 tests will use single samples 15.7 inches wide by 37 inches tall to watch the development and spread of a large-scale low-gravity fire. Scientists want to know if there is a limiting flame size and to quantify the size and growth rate of flames over large surfaces. “SAFFIRE is a box with a wind tunnel in it, a flow duct, that contains the sample that will be burned,” said Ruff. With two cameras poised to capture the fire, a hot wire along the upstream edge of the fiberglass-cotton fabric sample will trigger the burn that should last at least 15 or 20 minutes.

This is very clever, using the capsule as a fire test facility when it is on its way back to Earth to burn up in the atmosphere.

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Curiosity reaches Naukluft Plateau

9:24 am

The view from Naukluft

Apropos to my post yesterday on Curiosity’s journey on Mars, the rover this week reached the flat area the science team has dubbed Naukluff Plateau.

The Sol 1281 drive completed as planned, crossing the Murray/Stimson contact at the edge of the Naukluft plateau. Now that we have a better view of the plateau, we are ready to start driving across it. But first, ChemCam and Mastcam will observe targets “Orupembe” and “Witvlei” on the bedrock in front of the rover. Mastcam will also take pictures of the rocks in front of the rover and targets “Natab East” and “Natab West” on either side of the vehicle before the Sol 1282 drive. After the drive, in addition to the usual post-drive imaging, the Left Mastcam will acquire a full 360-degree panorama, as the view from the new location (near the left edge of the image above) is expected to be good. We are looking forward to seeing the new data!

The second link above leads to the rover’s daily update site. It was here that the science team reported an issue with the rover’s scoop back in early February. Since then, however, they have never revealed if the problem was solved. Nor have they used the scoop in any way since then. I now wonder if it is no longer operational and am considering pursuing that question a bit to find out.

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China plans first commercial rocket company

9:13 am

The competition heats up: A Chinese company has announced plans to start a new commercial rocket company to compete for the burgeoning space launch market.

China Sanjiang Space Group Co. is preparing to enter the commercial-rocket business with a launch slated for 2017, Xinhua reported Tuesday, citing the company’s chief engineer Hu Shengyun. Some Internet companies have expressed interest in collaborating on commercial launches, Hu said.

The Kuaizhou-11, translated as “fast vessel,” rocket is being developed by the Fourth Academy of China Aerospace Science & Industry Corp., a major missile supplier to the People’s Liberation Army, according to China Daily.

There is not much information at the link. The rocket was first launched in 2013, but not much has been revealed about it since.

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Akatsuki to finally begin studying Venus

8:46 am

After a five year delay because its initial attempt to enter Venus orbit failed, the Japanese probe Akatsuki is finally about to begin science operations.

Its present orbit is less than ideal, passing 440,000km from the planet at its farthest point. That is roughly five times greater than initially planned and means the orbit time is now nine days. The change in orbit has affected the probe’s observation plan. Of its seven planned missions, Akatsuki will be able to complete only one: taking serial images of clouds. Unfortunately, the probe’s five cameras, each capturing images in different wavelengths, including infrared and ultraviolet, will not be able to provide the same resolution at this greater distance. Observing volcanic eruptions on the Venusian surface may also be difficult.

There is an upside to the situation, however. Takeshi Imamura, an associate professor at JAXA’s Institute of Space and Astronautical Science, says the longer orbital period means the probe will be able to collect longer continuous stretches of data.

Considering everything, it is magnificent that Akatsuki will be able to do any science at Venus at all.

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Pinpointing Curiosity’s location in Gale Crater

3:07 pm

Curiosity's traverse

The Curiosity science team recently released a new Mars Reconnaissance Orbiter image, showing Curiosity’s overall route since its landing on Mars in August 2012. I have posted a reduced version on the right.

Similarly, on the Curiosity website you can view this more detailed map of its traverse route. This map is updated regularly as Curiosity continues its climb up Mount Sharp.

Neither of these maps is to me very satisfying or useful, however. Neither shows the overall location of Curiosity within Gale Crater. Nor do they give one a sense of how far it is has come on its climb up the mountain. In fact, it is very unclear how close the rover actually is to the peak from either image.

Thus, I decided to do a little research to get some better context of Curiosity’s position and its overall journey.
» Read more

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Iran to launch satellite?

12:26 pm

Does this make you feel safer? Iran is preparing to launch a new ballistic missile capable of placing satellites in orbit.

The Simorgh rocket is a new development not seen previously. Its launch would also be a violation of a UN resolution forbidding Iran to do such research, but who cares about that? It wouldn’t be violation of the great deal Obama negotiated for us with Iran, a deal that they themselves never endorsed.

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ExoMars blasts off

8:46 am

The European-Russian Mars orbiter/lander ExoMars was successfully launched on a Proton rocket this morning from Baikonur.

It will still take most of today for the rocket’s Briz-M upper stage to complete several additional engine burns to send the spacecraft on its path to Mars, but the most difficult part of the launch has now passed.

The article does a nice job of summing up Russia’s most recent track record in trying to send spacecraft to Mars, thus illustrating the significance of today’s success:

For Russian scientists, the launch marks the resumption of a cooperative effort with Europe to explore the Solar System, after the failure of the Phobos-Grunt mission in 2011.The launch of the ExoMars-2016 spacecraft will be Proton’s first “interplanetary” assignment in almost two decades. During its previous attempt in November 1996, Proton’s upper stage failed, sending the precious Mars-96 spacecraft to a fiery desmise in the Earth’s atmosphere and effectively stalling Russia’s planetary exploration program for a generation.

Further in the past, during the Soviet era, the Russians tried numerous times to either orbit or land on Mars. Every mission failed. If this mission successfully reaches Mars and lands it will mark the first time the Russians played a major role in a mission to Mars that actually reached its goal and worked.

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Blue Origin engine testing update

9:33 am

The competition heats up: Jeff Bezos has released an update on Blue Origin’s test program of its BE-4 rocket engine, being built as a possible replacement for the Russian engines in the Atlas 5.

Bezos’s final comment kind of explains why Boeing has favored them over Aerojet Rocketdyne for this engine:

One of the many benefits of a privately funded engine development is that we can make and implement decisions quickly. Building these two new test cells is a $10 million commitment, and we as a team made the decision to move forward in 10 minutes. Less than three weeks later we were pouring the needed three-foot thick foundations. Private funding and rapid decision making are two of the reasons why the BE-4 is the fastest path to eliminate U.S. dependence on the Russian-made RD-180.

I imagine however a lot of Congressmen are upset by this. If they do it too cheaply or too quickly there will be far less opportunity to spend pork in their districts!

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Second SLS flight delayed until 2023?

9:14 am

Government in action! The second flight of NASA’s SLS rocket, originally scheduled for around 2021 as the first manned mission, faces a possible delay of two years to 2023 so that it can be outfitted to launch the lander/orbiter planetary probe to Europa rather than flown manned.

The upper stage will be a new design that has never flown before. Thus, it has to be flown at least once unmanned to test it. Moreover, Congress in its most recent budget mandated that SLS be used for the Europa mission, probably in a team effort with NASA management to find a purpose for this missionless rocket that Congress has micromanaged from the beginning.

NASA has not officially decided to replace SLS’s original lunar manned mission for this second flight with the Europa mission, but I fully expect them to do so. They can’t fly the rocket with humans on it without first testing that upper stage engine at least once. Furthermore, the entire goal of SLS is not to fly missions but to employ people in Congressional districts. Delaying the first flight two years to outfit it for an unmanned planetary probe serves that absurd mission wonderfully.

The situation thus is that SLS will have a launch rate of once every five years, with a giant standing army of NASA and contractor employees paid during those years to do practically nothing while waiting for the next launch. While the article notes the high cost of building anything for SLS, it doesn’t explain that the reason things cost so much is that the government is slow-walking the construction of everything.

Note also that this means that Lockheed Martin will have an additional five years or so to finish its third Orion capsule. By that point the company will likely have spent about $20 billion, to build three capsules. Only a fool and a Congressman would consider this a good buy for the money.

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March 10, 2016 Zimmerman/Batchelor podcast

9:40 am

Embedded below the fold. I would dub this podcast an updated summary of what I in 2005 called the new colonial movement.

We are at the dawn of a new colonial age. The growing space competition between nations is in many ways very reminiscent of the 19th century competition between the European powers to colonize Africa and the South Pacific. In the 1800s, Germany, France, Belgium, the Netherlands, and the United Kingdom aggressively competed to carve up the undeveloped world. The result was foreign-run colonies controlling most of the Third World, for both good and ill, for almost a century.

Today, a new list of nations – India, China, Japan, Russia, Europe and the United States — are throwing their resources at space exploration in much the same way. Their goal, unstated but indisputable, is similar to the colonial powers of the 19th century: to obtain future domination over unclaimed territories in space.

This quest will, like the previous colonial efforts, be a long, complex and difficult historical process. Just as the colonial movement dominated much of 19th century politics and history, the growing desire by nations today to settle and control the solar system is also likely to dominate human history for centuries to come. The significant difference, however, is there are no aborigine peoples in space. The colonization of the solar system offers the hope of oppressing no one while bringing benefits to everyone who does it.

» Read more

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Rosetta detects magnetic-free bubble around comet

8:34 am

Scientists using Rosetta have finally detected the expected bubble or region surrounding Comet 67P/C-G where there is no magnetic field and the Sun’s solar wind does not enter.

The bubble is caused by the material being ejected from the comet. Scientists had detected the same thing around Halley’s Comet back in 1986, but it turns out the bubble around Comet 67P/C-G is larger than expected based on those previous measurements, and also fluctuates in size more than predicted.

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SpaceX estimates 30% price cut from reusable 1st stage

11:04 pm

The competition heats up: At a satellite conference on Wednesday SpaceX President Gwynne Shotwell estimated that they will be able to cut the price of launch to about $40 million, a 30% cut from their already low prices, once they can reliably begin reusing the first stages of the Falcon 9 rocket.

Given that SpaceX has no intention, for now, of recovering the second stage, she said a launch with a previously used first stage could be priced 30 percent less than the current Falcon 9 rockets.

SES of Luxembourg, SpaceX’s biggest backer among the large commercial satellite fleet operators, has said it wants to be the first customer to fly with a reused stage. But SES Chief Executive Karim Michel Sabbagh said here March 8 that SES wanted a 50 percent price cut, to around $30 million, in return for pioneering the reusable version.

Shotwell said it was too early to set precise prices for a reused Falcon 9, but that if the fuel on the first stage costs $1 million or less, and a reused first stage could be prepared for reflight for $3 million or so, a price reduction of 30 percent – to around $40 million – should be possible.

Shotwell also said they hope to launch 18 times this year, with the first Falcon Heavy launch now set for November. This is another two month delay from their previous announcement, which had said they were hoping to launch in September.

With only two launches so far this year, I must say I am skeptical they can achieve 16 more launches in the year’s remaining 9 months, a rate of about one almost every two weeks. They have never come close to this schedule, and though I believe they can eventually do so, I don’t think they can do it so quickly.

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ULA’s parent companies express caution about Vulcan

10:52 pm

The competition heats up? The executives in charge of ULA’s parent companies, Boeing and Lockheed Martin, today expressed mixed support for the development of the Vulcan rocket, designed to replace the Atlas 5.

For more than a year, Boeing and Lockheed Martin have been investing in the rocket on a quarter-by-quarter basis and the ULA board leaders said this week that the practice would continue. “We have to be prudent, disciplined stewards of any kind of investment,” Ambrose [Lockheed Martin] said. “Vulcan would be like any other investment decision.”

In September 2015, ULA’s leaders said a ban by Congress on the Russian RD-180 rocket engine, which powers ULA’s Atlas 5 rocket, was a leading driver behind the measured investment in Vulcan. But that issue was temporarily resolved in December, when Sen. Richard Shelby (R-Ala.) used a must-pass spending bill to eliminate the engine restrictions that had become law just weeks earlier.

Now, Ambrose pointed to “uncertainties” with launch policy, while Cooning [Boeing] said disagreements between lawmakers and the Air Force on the best approach for ending RD-180 dependence have given them pause, further justifying a “cautious and conservative approach.”

In other words, now that the law requiring a quick replacement of the Russian engine has been repealed, these executives feel less compunction to build Vulcan, something I had sensed in December and had commented on. As a result, they are telling us, in their tangled corporate ways, that they are not going to invest much of their own money on Vulcan, unless the government forks up a lot of cash for them to proceed.

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XCOR wins Vulcan engine design contract

10:05 am

The competition heats up: ULA has awarded XCOR a design contract for building an upper stage rocket engine for the Vulcan rocket.

This is good news for XCOR, though there is one important caveat: A close reading of the press release at the link shows that the contract does not guarantee that ULA will use this engine in Vulcan. XCOR must deliver, and ULA must be satisfied with what they produce.

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More details about China’s space station, planned for launch in 2020

10:00 am

The competition heats up: The chief designer of China’s human space program revealed more details today about their planned space station in talking with reporters at China’s on-going parliamentary sessions.

Zhou Jianping, speaking to state media on the sidelines of China’s ongoing parliamentary sessions, explained that the project will include three modules, two 30m solar panel ‘wings’, two robotic arms and a telescope dubbed ‘China’s Hubble’. Zhou, who is a member of China’s top consultative body currently in session in Beijing, said the space station will comprise of a core module and two labs forming a T-shape, each weighing about 20 tons.

The core module is scheduled to be launched in 2018, by the new heavy lift Long March 5 rocket, which will make its maiden flight in September and be capable of lifting 25 tonnes to low Earth orbit.

“China’s Hubble” will be a module flying near the station so that if it needs maintenance the station astronauts will be able to do the work.

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India launches sixth GPS satellite

9:51 am

The competition heats up: India has successfully launched the sixth satellite in its own GPS constellation. using its PSLV rocket.

They will complete the GPS constellation with a seventh satellite launch in April. The system however is already functioning, as it only needs a minimum of four satellites to work. Unlike the U.S. 24 satellite system, which is designed to be global, India’s system is regional with its focus centered over India itself. This is why they do not need as many satellites for it to function effectively.

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Another Falcon Heavy customer switches to different rocket

2:15 am

The competition heats up: Afraid of more delays in SpaceX’s Falcon Heavy rocket, Inmarsat has booked a Russian Proton rocket for a 2017 commercial satellite launch.

London-based Inmarsat is the second Falcon Heavy commercial customer to have sought a Plan B given the continued uncertainties in the launch schedule of Falcon Heavy, whose inaugural flight has been repeatedly delayed. Carlsbad, California-based ViaSat Inc. in February moved its ViaSat-2 consumer broadband satellite from the Falcon Heavy to Europe’s Ariane 5 rocket for an April 2017 launch, securing what may be launch-service provider Arianespace’s last 2017 slot for a heavy satellite.

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ExoMars ready for launch

2:07 am

The European ExoMars Mars orbiter and lander mission, set for launch on March 14, is assembled on its Proton rocket and is ready for launch.

This European project was originally going to be in partnership with NASA, but the Obama administration pulled out of the deal. The Russians then offered to come in and provide a rocket for the mission.

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Jeff Bezos gives a tour of Blue Origin

8:56 am

The competition heats up: Jeff Bezos gave his first tour of Blue Origin’s facilities for eleven journalists on Tuesday.

The article is chock full of interesting details about the company’s plans. To me these details about their New Shepard test program are the most interesting:

“We’re going to fly it until we lose it,” he said. The plan is to test the spaceship many, many times without humans aboard. At some point, Blue Origin will run a test in which the crew capsule will have to blast itself clear from the propulsion module at maximum dynamic pressure – a scenario during which the propulsion module will almost certainly be destroyed.

Not to worry, though: More crew capsules and propulsion modules are already under construction at the factory. “By the time anybody gets on, I think you should be willing to bring your mom,” Bezos said.

They also hope that this test program will proceed to launching humans by 2017.

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Second solo Ariane 5 launch in 2016

8:46 am

The competition heats up: In successfully placing a commercial communications satellite in orbit last night, Arianespace also did its second consecutive single satellite launch.

The Ariane 5 rocket is designed to carry two satellites, and normally does so in order to maximize its profit per launch. That they have done two straight commercial launches without a second satellite suggests to me that the competition from SpaceX is taking customers from them. The scheduling of the secondary payload usually suffers because priority is given to the primary satellite. Those customers thus might be switching to SpaceX in the hope they can gain better control over their own launch schedule, while also paying far less for their launch.

Then again, considering how unreliable SpaceX’s own launch schedule has been, it is unlikely these customers will have yet gained any scheduling advantages.

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NASA reschedules rather than cancels InSight

8:29 am

Forced to delay its launch because its primary instrument, built by the French, would not be ready for its 2016 launch, NASA has decided to go on with the InSight Mars mission, rescheduling it for a May 2018 launch, rather than cancelling it outright.

The seismometer, built by the French space agency CNES, will be repaired in time to make the 2018 launch window, said Jim Green, the head of NASA’s planetary sciences division in Washington DC. “That’s terrific news,” he told a planetary sciences advisory panel on 9 March. The Jet Propulsion Laboratory in Pasadena, California, will assume responsibility for building a new vacuum enclosure for the seismometer.

The last sentence above suggests that NASA has decided to take certain responsibilities from the French to make sure they get done right. It also means that the cost will be born by the NASA’s planetary program, cutting into other possible future missions.

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Dawn’s chief engineer reviews the mission

8:45 am

In a long and very detailed post, the chief engineer and mission director of Dawn gives us a very detailed update on the successful state of the spacecraft’s mission.

Not only does he describe what has been gathered at Ceres since the spacecraft arrived a year ago, he gives us this crucial information about the state of this paradigm-shattering ion engine spacecraft, the first to travel to two different objects in the solar system:

Dawn has faced many challenges in its unique voyage in the forbidding depths of space, but it has surmounted all of them. It has even overcome the dire threat posed by the loss of two reaction wheels (the second failure occurring in orbit around Vesta 3.5 years and 1.3 billion miles, or 2.0 billion kilometers, ago). With only two operable reaction wheels (and those no longer trustworthy), the ship’s remaining lifetime is very limited.

A year ago, the team couldn’t count on Dawn even having enough hydrazine to last beyond next month. But the creative methods of conserving that precious resource have proved to be quite efficacious, and the reliable explorer still has enough hydrazine to continue to return bonus data for a while longer. Now it seems highly likely that the spacecraft will keep functioning through the scheduled end of its primary mission on June 30, 2016.

NASA may choose to continue the mission even after that. Such decisions are difficult, as there is literally an entire universe full of interesting subjects to study, but resources are more limited. In any case, even if NASA extended the mission, and even if the two wheels operated without faltering, and even if the intensive campaign of investigating Ceres executed flawlessly, losing not an ounce (or even a gram) of hydrazine to the kinds of glitches that can occur in such a complex undertaking, the hydrazine would be exhausted early in 2017. Clearly an earlier termination remains quite possible.

Dawn has proven the value of ion engines. I would expect to see them used many more times in the future, especially missions heading to low gravity environments.

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Clouds on Pluto?

8:05 pm

A report from New Scientist today claims that the New Horizons science team has possibly seen individual clouds in some images.

Grundy had spotted features in the haze on the edge – or “limb” – of Pluto that seemed to stand out from the distinct layers. But more intriguingly, he had also seen a bright feature crossing different parts of the landscape, suggesting it was hovering above. The email kicked off a discussion as to whether the clouds were real, because it was difficult to see whether they cast shadows on the ground. The team also deliberated over the exact distinction between clouds and hazes. “One way to think of it is that clouds are discrete features, hazes widespread,” wrote Alan Stern, who heads up the New Horizons mission.

There has been no public mention of the clouds, suggesting that the team isn’t sure about the detection.

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Roscosmos approves space tourism project

8:01 pm

The competition heats up? Russia’s giant aerospace monopoly Roscosmos has given formal permission for the development of a suborbital space tourism project, proposed by the formally independent company, KosmoKurs.

Russia’s State Space Corporation Roscosmos has admitted the private space company KosmoKurs to working out a project for the development of a reusable system for space tourism flights, KosmoKurs Director General Pavel Pushkin said on Friday. “Our technical design specification was approved by Roscosmos two days ago. The system’s preliminary design will be created with this document,” Pushkin said at the InSpace forum.

According to him, the technical design specification has also been approved by the Central Research Institute of Machine Building (TsNIIMash) and the Keldysh Research Center. In addition, Pushkin said, Roscosmos chief Igor Komarov has already approved the project. “Igor Anatolyevich has taken the project with enthusiasm and gave orders to promote this project”, Pushkin said.

So, if I understand this right, this private company had to get approvals from Roscosmos’s bureaucracy, two other competitive groups within Roscosmos, plus the head of Roscosmos itself, before it would be allowed to proceed with building its independent suborbital operation. I wonder how many bribes KosmosKurs had to pay along the way. I also wonder what kind of quid pro quo deals that had to make in order get those other institutes to give their okay.

With Russia’s aerospace industry function under this kind of set-up, I doubt they are going to get much done in the coming decades.

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Getting higher on Mount Sharp

9:03 am

Looking across Gale Crater

Cool image time! The above image, cropped and reduced slightly for presentation here, was taken by one of Curiosity’s navigation cameras on March 2. Though the science team has not captioned it, I think it is looking down from the heights that Curiosity has climbed and across the plains of Gale Crater to its rim in the far distance. The image itself appears to have been taken after the rover spent several days climbing up to what they have dubbed Naukluft Plateau.

Be sure to check out the full resolution image that can be found here.

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Methane ice on Pluto’s mountain peaks

8:34 am

New images from New Horizons of the dark Cthulhu region have revealed white-capped mountain peaks, thought to be methane ice.

Scientists think this bright material could be predominantly methane that has condensed as ice onto the peaks from Pluto’s atmosphere. “That this material coats only the upper slopes of the peaks suggests methane ice may act like water in Earth’s atmosphere, condensing as frost at high altitude,” said John Stansberry, a New Horizons science team member from Space Telescope Science Institute, Baltimore, Maryland.

We as humans are attracted to features on other worlds that remind us of Earth, mainly because this allows us to quickly understand what we are seeing. It is important however to remind ourselves continually that Pluto is not Earth, and is in fact a very alien place. Many things we think we recognize are really very different than what we assume. For example, the methane ice here is coating mountains made of water ice that is as stable as granite in Pluto’s super cold environment.

One more thing: It appears that at this point, seven months after New Horizons flew past Pluto, they have still only downloaded less than half the data obtained. This is not a problem, as this is how things were planned, but it does mean that there are likely many more discoveries yet for us to see.

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