Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

NASA engineers still struggling to understand why Orion’s heat shield ablated so much

9:10 am

NASA engineers still do not understand why the heat shield on its Orion capsule ablated as it did during its return to Earth on the first unmanned Artemis-1 mission.

The agency is still running tests. It also expressed confidence that the issue will not delay the Artemis-2 mission, the first intended to carry humans on SLS and in Orion and still scheduled for late 2024.

At the same time, agency officials hinted that the third Artemis mission, which has always been planned as putting humans on the Moon for the first time since Apollo, might not achieve that goal. It is still not clear whether the mission’s lunar spacesuits as well as SpaceX’s Starship lunar lander will be ready on time. The latter is facing serious regulatory problems imposed by the Biden administration that is generally preventing it from flight testing the spacecraft.

That second Artemis mission, the first planned to carry humans, is one that actually at present carries the most risk. It will not only use a heat shield that at present engineers do not entirely understand, it will be the first Orion capsule to have the environmental systems necessary for its human cargo. NASA is putting humans on the first test flight of those systems.

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China’s Long March 2C rocket launches “disaster reduction” satellite

7:30 pm

China today used its Long March 2C rocket to place what it called a “disaster reduction” satellite into orbit, launching from its Taiyuan spaceport in the interior of China.

No other information was released, including whether the rocket’s lower stages landed near habitable areas.

The leaders in the 2023 launch race:

54 SpaceX
32 China
10 Russia
6 Rocket Lab
6 India

American private enterprise still leads China in successful launches 62 to 32, and the entire world combined 62 to 53, while SpaceX by itself still leads the world (excluding American companies) 54 to 53.

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August 8, 2023 Quick space links

3:51 pm

Courtesy of BtB’s stringer Jay.

 

 

 

  • According to NASA the investigation into the Soyuz/Progress coolant leaks continues

    • It appears Russia still favors micrometeorite impacts as the cause, but no possibilities have been dismissed. If Russia concludes it was sabotage or some failure in the coolant system design, do not expect any public information release, though Russian officials might tell NASA officials, under an agreement that NASA will help Russia keep this info secret.

 

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NOAA lifts many restrictions on the release of commercial Earth observation images

3:09 pm

As part of a 2020 revision by Commerce to reduce regulations on satellites that monitor the Earth, NOAA has now lifted many of the restrictions it placed on the release of high resolution commercial Earth observation images.

NOAA said it lifted 39 restrictions on an unspecified number of licenses. Those restrictions include a reduction of global imaging restrictions for certain imaging modes and removal of restrictions on non-Earth imaging and rapid revisit. It also removed all temporary conditions on X-band synthetic aperture radar (SAR) imagery.

One of the companies that benefits from the removal of the conditions is SAR imaging company Umbra. The company announced Aug. 7 that, with the removal of the conditions, it can now offer SAR images to customers at a resolution of 16 centimeters, compared to no better than 25 centimeters under the old license conditions. “This means that we are finally able to offer customers the highest resolution images that our satellites are capable of capturing, setting the stage for even further expansion of products to customers,” said Gabe Dominocielo, Umbra’s co-founder and president, in a company statement.

The revision to the regulations, put in place in 2020, had been instigated by the Trump administration, and has apparently been left untouched by the Biden administration, at least up until now.

For the satellite companies it means they are much freer to produce that best imagery, and thus compete more successfully. For customers, it means that they will now have access the best imagery, in open competition. For news outlets attempting to report on things like the Ukraine War, for example, this ability will make it possible to improve the accuracy of the coverage.

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Real pushback: Judge slams Southwest Airlines for violating settlement terms of free-speech court case

1:38 pm

Southwest: Enemy to free speech

Bring a gun to a knife fight: We now come to another chapter in the continuing saga of flight attendant Charlene Carter, who was fired in 2017 by Southwest Airlines because she had expressed opinions that were not liked by both the company and union officials. In 2022 a jury awarded her $5.1 million against the airline and the union.

In December 2022 the federal judge in the case, Brantley Starr, reduced the settlement award to $810,000 in order “to comply with federal limits on punitive damages.” However, he also approved the rest of the jury award, which required Southwest to rehire Carter as well as change its policies that violated the first amendment, and announce these facts publicly to its employees.

Only a month later Carter went back to court, demanding that the judge sanction Southwest for violating settlement terms of her court victory. Not only did the company not admit error to its employees, as required by the settlement, one company-wide memo slandered Carter again, calling her previous communications for which she was fired as “inappropriate, harassing, and offensive.”

Judge Starr yesterday responded to Carter’s demand for relief, slamming Southwest in no uncertain terms.
» Read more

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Land of Martian springs?

11:30 am

Land of Martian springs?
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on December 22, 2014 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). I came across this image when researching another photo taken recently of the interior of this same 56-mile-wide crater, dubbed Firsoff, and decided this decade old picture was far more interesting.

Firsoff, which had been considered a candidate landing site for Perseverance, is known for the many layers shown in this picture. It is also known for having mounds, here ranging in height from 90 to 150 feet, that some scientists believe could have once been springs of water. The layers as always are of great interest, as they provide data on past geological events. In the case of Firsoff, the layers are especially easy to see because of their alternating dark and light colors. The dark layers are thought to be basalt, suggesting these layers were laid down during a volcanic event.
» Read more

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Scientists repeat fusion power experiment that produced more energy than spent

10:03 am

For the second time ever, scientists have successfully produced more energy from a fusion power experiment than they spent running the experiment.

Physicists have since the 1950s sought to harness the fusion reaction that powers the sun, but until December no group had been able to produce more energy from the reaction than it consumes — a condition also known as ignition.

Researchers at the federal Lawrence Livermore National Laboratory in California, who achieved ignition for the first time last year, repeated the breakthrough in an experiment on July 30 that produced a higher energy output than in December, according to three people with knowledge of the preliminary results.

Before you start buying stock in fusion power or believe the glowing praises coming from politicians and government bureaucrats, be warned: This experiment, which cost billions, was only able to produce enough power to run a household iron for about an hour. It will likely take many more billions and decades more of research to scale it up to a viable power system that has any hope of being practical.

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Ingenuity completes 54th flight, a short hop after previous flight ended prematurely

9:45 am

Overview map
Click for interactive map.

According to the Ingenuity engineering team, Ingenuity has successfully completed its 54th flight on Mars, a short 25 second hop up and down that was done to try to figure out why the previous flight previous flight, #53, had ended prematurely.

Flight 53 was planned as a 136-second scouting flight dedicated to collecting imagery of the planet’s surface for the Perseverance Mars rover science team. The complicated flight profile included flying north 666 feet (203 meters) at an altitude of 16 feet (5 meters) and a speed of 5.6 mph (2.5 meters per second), then descending vertically to 8 feet (2.5 meters), where it would hover and obtain imagery of a rocky outcrop. Ingenuity would then climb straight up to 33 feet (10 meters) to allow its hazard divert system to initiate before descending vertically to touch down.

Instead, the helicopter executed the first half of its autonomous journey, flying north at an altitude of 16 feet (5 meters) for 466 feet (142 meters). Then a flight-contingency program was triggered, and Ingenuity automatically landed. The total flight time was 74 seconds.

This explains why, after the 53rd flight, the engineering team had not immediately added that flight to the helicopter’s flight log. That log is now updated to include both the 53rd and 54th flights, but the data from the 53rd flight was held back until after the 54th flight was completed.

The green dot in the overview map above shows Ingenuity’s present position, only a few feet to the west from its previous position shown here. The blue dot indicates Perseverance’s present position. The red dotted line indicates the planned route of the rover.

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Startup orbital tug company signs deal from startup solar panel company

9:26 am

The new orbital tug company Atomos has now signed a deal with the new solar panel company, Solestial, to use the latter company’s solar panels in its tugs.

Neither company has yet flown anything in space, though both have contracts and demo missions scheduled.

Atomos plans to test a small Solestial photovoltaic panel on an orbital transfer vehicle demonstration set to launch on a SpaceX Transporter rideshare flight in early 2024. Solestial also will supply large solar blankets for two Atomos’ solar-electric OTVs slated to begin flying in late 2024 or early 2025.

Once again, these two companies illustrate the growth in the satellite industry produced by the lowering of launch costs. With less capital required to get to orbit, there is a larger margin for profit, thus encouraging companies with new ideas.

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Japanese startup signs deal to provide its smallsat thrusters to South Korean university

9:20 am

Pale Blue, a Japanese startup which focuses on building water-vapor thrusters for cubesats, has signed a deal with Yonsei University in South Korea to provide that school smallsat thrusters for the satellites built by its students.

“Our mission aims for demonstrating cutting-edge laser communication, orbital maneuvering and formation-keeping,” Sang-Young Park, a Yonsei University astronomy professor, said in a statement. “These thrusters perfectly meet our requirements and offer the advantage of being not only environmentally friendly, but also free from regulatory constraints.”

Pale Blue proved its Resistojet thruster in orbit for the first time in March on a Sony Corp. Star Sphere satellite. Pale Blue plans to establish mass production of Resistojet thrusters to reduce the cost and lead time for potential customers in the United States, Europe and Asia, said Yuichi Nakagawa, Pale Blue co-founder and chief technology officer.

The company is also developing both an ion and hybrid thruster for satellites, and is another example of how the lowering of launch costs has encouraged the arrival of many new space companies doing many different things.

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Dish and Echostar to merge

9:15 am

The communications satellite company Echostar is now merging with the direct broadcast company Dish. From the press release:

The transaction combines DISH Network’s satellite technology, streaming services and nationwide 5G network with EchoStar’s premier satellite communications solutions, creating a global leader in terrestrial and non-terrestrial wireless connectivity. Both companies have strong momentum, highlighted by DISH’s 5G wireless network that now covers more than 70 percent of the U.S. with full commercialization underway and the successful launch of EchoStar’s JUPITER 3 satellite with significant available capacity for converged terrestrial and non-terrestrial services. The combined company will be well-positioned to deliver a broad set of communication and content distribution capabilities, accelerating the delivery of satellite and wireless connectivity solutions desired by customers.

This merger is I think part of the consolidation that is going on among the older players in the communications satellite industry as they struggle to deal with the competition from the new satellites constellations of Starlink and OneWeb.

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Momentus is now selling a version of its orbital tug simply as a service module for satellites

9:09 am

The orbital tug company Momentus has discovered that it can make money selling a version of its orbital tug simply as a service module, or bus, for commercial and military satellites.

The company announced Aug. 2 that it was now offering customers a bus called the M-1000. The bus is similar to the Vigoride orbital transfer vehicle that Momentus has flown three times so far, but without the water-based propulsion system it uses for changing orbits.

The bus emerged from limitations flying hosted payloads on Vigoride, which remain attached to the tug rather than deployed as satellites. Rob Schwarz, chief technology officer at Momentus, said in an interview that the company started gauging interest a year ago in hosted payloads on Vigoride, including from U.S. government agencies. “What we’re finding is that a lot of government customers don’t really want to borrow the bus and lease it, but instead they want to own it,” he said. “Also, in some cases, because of the sensitivity of the payloads they don’t want to share it with other users.”

That led Momentus to instead consider a version of Vigoride that would be a satellite bus sold to customers instead of provided as a service. It uses many of the same subsystems, like avionics and power, as Vigoride. Changes include improved pointing and options for third-party chemical and electric propulsion systems.

This is just good and smart business practice. Momentus has a product that doesn’t appeal to some customers, in its designed iteration. Rather than trying to deny reality, the company quickly accepted the situation and revised its product in a somewhat easy way so it can be sold to those customers.

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