Tag: spaceflight

New thermal protection system developed by Sierra Space

10:27 am

Sierra Space yesterday announced that it has developed in partnership with Department of Energy’s Oak Ridge National Laboratory in Tennessee a new thermal protection system (TPS] that it expects will give its Dream Chaser mini-shuttles a heat shield that can be reused frequently and fast.

The TPS tiles are made of a proprietary composite material that’s as strong as carbon fiber but with the added high-temperature stability of ceramic materials. The composite tiles have low-density thermal protection properties that are vital for insulative protection and stable flight dynamics. Atmospheric re-entry exposes spacecraft to speeds of more than Mach 17 (About 13,000 mph or 21,000 kph) with temperatures reaching higher than 3,100 degrees Fahrenheit (1,704 degrees Celsius).

These new tiles are based on the shuttle tiles, but apparently use carbon fibers to strengthen them so they are more robust and require less replacement. The shuttle tiles were much too fragile, requiring significant replacement after each launch. That fragility also caused the destruction of Columbia on its return to Earth in 2003, because the tiles were damaged badly when hit by foam coming off the shuttle during launch.

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SpaceX scraps its land swap offer to Texas

10:11 am

SpaceX has decided to scrap its land swap offer to Texas, whereby the company would have given the state 477 acres of wildlife land it owns elsewhere in exchange for ownership of 43 acres of state park land adjacent to its Boca Chica facility.

In a Sept. 26 letter seen by Bloomberg News, SpaceX Vice President Sheila McCorkle told the Texas Parks and Wildlife Department that the company “is no longer interested in pursuing the specific arrangement.”

In exchange for SpaceX getting the 43 acres, the company would have given the state some 477 acres of its land near Laguna Atascosa National Wildlife Refuge, around 10 miles away. The land could have given Texans access for hiking, camping and other recreational purposes, the Texas Parks and Wildlife Commission said. In March, the commission approved the deal.

Environmental activists worry their fight’s not over with SpaceX and Musk, who has achieved newfound political power through his close ties to President-elect Donald Trump. “We’re concerned that he has something bigger and more disruptive to the beach and to the wildlife in mind,” Bekah Hinojosa, a representative from the South Texas Environmental Justice Network, an advocacy group, said in an interview. [emphasis mine]

The blind opposition of these leftist activists to Musk and anything he does has merely caused them to cut off their nose to spite their face. SpaceX’s proposal would have given the public a much larger wildlife area that was also far enough away from Boca Chica to allow its use all the time. Now the state is stuck with 43 acres of state park land that is going to be useless whenever Starship/Superheavy launches.

The lawsuits against this swap claimed it violated the Texas constitution. My guess is that SpaceX decided it wasn’t worth fighting this battle. Or maybe it is now playing hardball in negotiations. These activists do not have the support of the local community, which wants SpaceX’s operations to be successful. By scrapping the plan now SpaceX might be acting to force the Texas legislature to change the law to make the land swap legally acceptable.

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Blue Origin links the first and second stages of New Glenn for the first time

9:43 am

New Glenn finally stacked
Click for original image.

After more than a decade of development and five years overdue, Blue Origin earlier this week finally intergrated the two stages of its New Glenn rocket in preparation for its first launch.

The picture to the right shows the rocket stacked horizontally in Blue Origin’s rocket facility in Florida.

The company still has to roll the rocket out to the launchpad, raise it to a vertical position, and conduct at least one dress rehearsal countdown ending in a short static fire test of the first stage’s seven BE-4 engines. At the moment the company is targeting a November launch.

New Glenn is expected to make its maiden flight sometime in November, taking off from Launch Complex 36 at Cape Canaveral Space Force Station, which is next door to KSC. The flight will carry one of the company’s new Blue Ring spacecraft on a National Security Space Launch certification flight known as DarkSky-1 and sponsored by the Defense Innovation Unit.

The original payload for this launch, two small NASA Mars orbiters, had been pulled because Blue Origin couldn’t get the rocket ready in time for its October launch window. Blue Ring is Blue Origin’s own orbital tug and satellite platform, and this flight is probably intended to get it certified for national security payloads.

The fast development of Blue Ring might give us a hint as to the changes to Blue Origin’s culture since Bezos replaced its previous CEO, Bob Smith, with Dave Limp in September 2023. Blue Ring was announced only one month later, and in just over a year it is now ready for its first launch. Such speedy development has not been the way at Blue Origin for years, if ever. If Limp has been able to instill that urgency across the entire company, then we shall some very exciting achievements from Blue Origin indeed in the next few years.

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AST Spacemobile signs multi-launch agreement with Blue Origin

9:24 am

The direct-to-cell satellite company AST Spacemobile announced yesterday that it has signed a multi-launch agreement with Blue Origin to use its New Glenn orbital rocket to place approximately sixty of its second generation BlueBird satellites into orbit in the 2025-2026 time frame.

The next-generation Block 2 BlueBirds are designed to deliver up to 10 times the bandwidth capacity of the BlueBird satellites in orbit today, accelerating the goal to achieve 24/7 continuous cellular broadband service coverage. The service will target approximately 100% U.S. nationwide coverage from space with over 5,600 coverage cells, with beams designed to support a capacity of up to 40 MHz, enabling peak data transmission speeds up to 120 Mbps, supporting voice, full data and video applications. The Block 2 BlueBirds, featuring up to 2,400 square foot communications arrays, will be the largest ever commercially deployed in low Earth orbit once launched, surpassing the current record held by AST SpaceMobile’s BlueBird 1-5 and BlueWalker 3, each ~700 square feet in size.

The Block 2 BlueBirds are designed to be compatible with all major launch vehicles. Blue Origin’s launch vehicle, the New Glenn, offers a seven-meter fairing enabling twice the payload volume of five-meter class commercial launch systems, and is well-suited to launching up to 8 of the largest-ever Block 2 BlueBirds.

According to this, the contract is for approximately 7 to 8 New Glenn launches. It also notes the large capacity of New Glenn apparently gives it an advantage over the rockets available from both SpaceX and ULA. If (the operative word) Blue Origin can finally get this rocket off the ground soon, it will then finally provide some real competition to SpaceX.

We shall see. New Glenn is five years behind schedule, and all signs suggest the company continues to move at a relatively slow pace compared to its competitors. It has said it wants to do the first New Glenn launch before the end of the year, but that remains uncertain.

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FAA forming new committee to revise its launch licensing regulations

9:14 am

The timing is interesting: The FAA yesterday announced that it wishes to form a committee of “members of the commercial space industry and academia” to revise its Part 450 launch license regulations that were introduced in 2021 supposedly to streamline the process but have instead served to squelch innovation and new rocket startups significantly.

“The FAA is seeking to update the licensing rule to foster more clarity, flexibility, efficiency, and innovation,” said FAA Associate Administrator for Commercial Space Transportation Kelvin B. Coleman. “Making timely licensing determinations without compromising public safety is a top priority.”

The Part 450 rule was developed to streamline the regulations, reduce the number of times an operator would need to come to the FAA for a license approval and decrease the need for the FAA to process waivers, among other goals.

The committee will consist of members of the commercial space industry and academia and will focus on nine topics, including flight safety analyses, system safety, and means of compliance. It is expected to submit a report with recommended changes to Part 450 rule by late summer 2025. The FAA would then use the recommendations to plan future rulemaking actions. [emphasis mine]

The highlighted words are a lie. While established rockets might have benefited — allowing more launches, Part 450 has practically squelched new development because it forces companies to undergo lengthy reviews every time they attempt to introduce any new technology or redesign to their rockets. SpaceX’s experience with Starship/Superheavy is only the tip of the iceberg, because the company is big enough that it has been able to survive these reviews and push on. Almost all of the new rocket startups that were on the verge of launching in 2020, before Part 450 went into effect, have either delayed launches for years or gone bankrupt.

The FAA hopes to conduct the first meeting of this new committee by the first week in December. It apparently realizes that the Trump administration is going to demand a major change in Part 450 (possibly a complete repeal), and the agency wishes to get ahead of this to maybe fix things.

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China launches Tianzhou cargo freighter to its Tiangong-3 space station

8:50 am

China today successfully launched a new Tianzhou cargo freighter to its Tiangong-3 space station, its Long March 7 rocket lifting off from its coastal Wenchang spaceport.

The leaders in the 2024 launch race:

114 SpaceX
53 China
13 Russia
12 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 132 to 79, while SpaceX by itself leads the entire world, including American companies, 114 to 97.

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Boxwork in the dry Martian tropics

2:17 pm

Boxwork on Mars
Click for original image.

Cool image time! The picture to the right, cropped and enhanced to post here, was taken on July 17, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists label as boxwork, a pattern of intersecting straight ridges criss-crossing each other in a generally random manner.

The ridges themselves are very small, only a few feet high. To make them more visible I have purposely cropped this section without reducing its resolution. I have also increased the contrast.

What caused them? According to this paper [pdf] about similar boxwork found on Mount Sharp in Gale Crater, the boxwork “formed when cements filled existing pore spaces and fractures in fractured rock, and these cements were left as topographic ridges after erosion.”

In other words, the surface hardened, then fractured. Later more resistent material, likely lava, filled the cracks. When erosion later stripped the top surface away, the lava was more resistent and so became the ridges we now see.
» Read more

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NASA reveals that it and Russia disagree about the danger posed by the airleak on ISS

8:54 am

Figure 3 from IG report
Figure 3 from September Inspector General report, annotated by me to show Zvezda location.

In a public session yesterday by a NASA commission focused on accessing the safety condition of ISS, officials revealed that the commission and Russia disagree about the root causes behind the airleak and cracks in the docking section of the Zvezda module on the Russian half of ISS, as well as the risk of a catastrophic failure. According to the commission’s head, former astronaut Bob Cabana.

The Russian position is that the most probable cause of the PrK cracks is high cyclic fatigue caused by micro vibrations. NASA believes the PrK cracks are likely multi-causal including pressure and mechanical stress, residual stress, material properties and environmental exposures.

The Russians believe that continued operations are safe, but they can’t prove that to our satisfaction. The U.S. believes that it’s not safe, but we can’t prove that to Russian satisfaction that that’s the case. So while the Russian team continues to search for and seal the leaks, it does not believe catastrophic disintegration of the PrK is realistic and NASA has expressed concerns about structural integrity of the PrK and the possibility of a catastrophic failure.

Because of this disagreement American astronauts now close the hatch between the Russian and American halves of ISS whenever a docking to Zvezda is taking place, and apparently keep that hatch closed until unloading of the docked spacecraft is complete. The Russians in turn only open the hatch to the docking section of Zvezda when they need to load or unload material into the freighter docked there, and coordinate with American astronauts whenever they do so.

Engineers from the two nations continue to discuss the issue, and hope to result their disagreement and come up with a joint plan.

Ultimately, this issue indicates the certain end of ISS in the near future, and adds ugency to the need to get some of those commercial space stations operating in orbit.

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Pakistan to fly a small rover on China’s Chang’e-8 lunar lander

8:36 am

In an agreement signed yesterday, the Space and Upper Atmo­sphere Research Comm­ission (Suparco) in Pakistan announced it will collaborate with China to build a small rover that will to fly on China’s Chang’e-8 lunar lander.

The lander is present scheduled to land near the Moon’s south pole in 2030, will be China’s second lander to the south pole region, and will also act to officially establish China’s International Lunar Research Station (ILRS) on the lunar surface. It will also include a “hopper” to explore the nearby surface.

Pakistan had already signed on to China’s space alliance to build the ILRS. China’s present list of partners is as follows: Azerbaijan, Belarus, Egypt, Kazakhstan, Nicaragua, Pakistan, Russia, Serbia, South Africa, Thailand, Turkey, and Venezuela. That partnership also includes about eleven academic or governmental bureaucracies.

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China and SpaceX complete morning launches

8:16 am

Both China and SpaceX today successfully completed morning launches.

First China launched an environmental satellite to study “ocean salinity,” its Long March 4B rocket lifting off from its Taiyuan spaceport in northeast China.

No word on where the rocket’s lower stages crashed inside China. All use very toxic hypergolic fuels, which can literally dissolve your skin.

Next SpaceX completed another launch of 23 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral in Florida. The first stage completed its eighteenth flight, landing on a drone ship in the Atlantic.

The leaders in the 2024 launch race:

114 SpaceX
52 China
13 Russia
12 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 132 to 77, while SpaceX by itself leads the entire world, including American companies, 114 to 95.

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SpaceX launches 20 Starlink satellites

12:41 am

SpaceX tonight successfully launched 20 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg in California.

The satellites included 13 of the Starlink direct-to-cell satellites. The first stage successfully completed its eighth flight, landing on a drone ship in the Pacific.

The leaders in the 2024 launch race:

113 SpaceX
51 China
13 Russia
12 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 131 to 76, while SpaceX by itself leads the entire world, including American companies, 113 to 94.

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Another cool hiking location on Mars

11:39 am

Overview map

Another cool hiking location on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on August 10, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

My reason to posting this I admit is selfish and tourist-oriented. This narrow ridge, about a mile long and about 300 to 600 feet high, appeals directly to my hiking passions. A trail along its length would provide any hiker some really spectactular views.

The scientists took the picture because of the geology. The white dot on the overview map above marks the location, a short channel dubbed Daga Vallis that connects two major canyons in the eastern part of Valles Marineris, the largest known canyon system in the solar system. This ridge and several nearby parallel ridges were apparently made of something, possibly lava, that was resistent to the theorized ancient catastrophic floods that scientists presently believe carved out these channels and canyons.

In the inset the dotted line indicates one possible hiking trail route that travels the full length of the ridge but then heads south to continue along the rim of a 1,200-foot-high cliff face. For future Martian colonists, I offer this site as a great place to set up a bed-and-breakfast, surrounded by many potential hikes of incredible stark beauty.

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