Category: Behind The Black

China launches eight satellites from offshore barge

9:16 am

China's spaceports

China today successfully launched eight satellites, its Smart Dragon-3 rocket lifting off from an offshore barge off the northeast coast of China.

The reports from China’s state-run press provided no information on the satellites themselves. The rocket has four stages that are all solid-fueled. This was its fourth launch from the off-shore barge. It was also thirteenth total offshore launch for China, involving four different rockets.

The leaders in the 2024 launch race:

93 SpaceX
42 China
11 Russia
11 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 109 to 64, while SpaceX by itself now leads the entire world, including American companies, 93 to 80.

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September 23, 2024 Quick space links

4:23 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

  • ULA is prepping Vulcan for its second launch

    • Target launch date is October 4, 2024. The launch will put a dummy payload into orbit, but it will, if successful, also certify Vulcan for operationals paying launches for the U.S. military.

 

 

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More deterioration to Curiosity’s worst wheel

12:13 pm

Comparison of changing damage from Feb to Sept 2024
For original images go here, here, and here.

The science team for the Curiosity Mars rover on September 22, 2024 did another survey of its damaged wheels using the close-up camera on the end of the rover’s arm, and though most of the pictures appear to show the situation remains stable, the one wheel that has consistently shown the worst damage now shows some additional deterioration since February 2024.

To the right are comparison pictures, with the February 2024 picture on top and two new September 22, 2024 images showing the same damaged area, though from a different angle, on the bottom. (The technical captions for the bottom images can be found here and here.) I have labeled the treads, dubbed growsers, to make it easier to understand how the pictures all line up.

Previous images have looked down at the large damaged area from growsers 1 to 4, and since it was first spotted in 2022 showed it to be growing, but very slowly. The new pictures show that same damaged area from the side, which reveals that the zig-zag divider between growser #3 and growser #4 has now collapsed, so that this whole damaged area is now a major depression, as indicated by the two arrows.

Overall, the rover’s wheels appear to surviving the rough terrain of the foothills of Mount Sharp, though it is clear that care must continue to be taken to extend their life for as long as possible. That the rover has six wheels gives it a lot of redundancy, so that even if this one wheel eventually fails the rover will likely be able to continue to rove, but with some limitations. This wheel is the left middle wheel, which is helpful, as it is less necessary than the four corner wheels. [Update: According to a rover update today, this wheel is the right middle wheel, which contradicts an earlier report which described this as the left middle wheel. I note this contradiction for accuracy.]

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Isar begins static fire tests of its Spectrum rocket

9:44 am

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea

Isar Aerospace, one of three German rocket startups vying to the be first to complete an orbital launch, has now revealed that it has begun static fire tests of its Spectrum rocket at its launch facility at the Andoya spaceport in Norway.

In response to questioning from European Spaceflight, Isar confirmed that all components of the Spectrum rocket that will be utilized for its inaugural flight had arrived in Andøya and that testing of the first and second stages had begun.

“All components of our launch vehicle Spectrum have arrived in Andøya and the final preparations for the first test flight of Spectrum are in full swing,” an Isar Aerospace spokesperson said. “We are currently performing hot fire tests of the first and second stages. These tests will determine whether the systems meet all the necessary requirements for the first test flight.”

The company has a 20-year lease at Andoya, and though it has not announced a launch date, these ground tests suggest that launch could occur quite soon. If so, Isar will have beaten Rocket Factory Augsburg and Hyimpulse to space. Rocket Factory had apparently been in the lead until a fire during a full static fire test of its RFA-1 rocket’s first stage in August destroyed the rocket.

This race is also between the spaceports surrounding the Norwegian Sea. Rocket Factory is launching from Saxavord in the Shetland Islands, a spaceport that has been under development the longest, since before 2020, and has been plagued with the red tape problems that appear systemic in the United Kingdom. Andoya however is a latecomer in this race. Though it has been used for suborbital tests for decades, it only started its effort to become a commercial spaceport for orbital flights in November 2023, less than eleven months ago.

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New Russian missile explodes during test

9:29 am

According to orbital imagery, it appears that a new Russian missile that has been under development for more than a dozen years but has not yet completed a full test flight, exploded sometime between September 20th and September 21st during a test launch.

Satellite images from Planet Labs of the Sarmat’s Yubileinaya launch silo in Plesetsk posted on Sept. 21, 2024, showed a major crater left by an apparent rocket explosion, along with multiple fires just east of the site. The fires were also confirmed by NASA’s satellite-based Fire Information for Resource Management System, FIRMS, within 24 hours of Sept. 21, 2024. At least four fire engines speeding to the facility were also discernable on satellite images, confirming that these pictures had been taken immediately after the incident on September 21.

The rocket’s development — which claims will be far more capable than its present missiles — appears to have been plagued with problems and delays. It is also a strange missile, in that it is liquid-fueled, something that western militaries abandoned for missiles more than a half century ago. Solid-fueled missiles are simpler and can be stored ready-to-launch for long periods. Fueling and launching a liquid-fueled rocket quickly is not really practical during a wartime emergency.

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SpaceX conducting salvage operations to recover a Superheavy booster in the Gulf of Mexico

9:19 am

SpaceX has apparently conducted salvage operations in the Gulf of Mexico to recover the Superheavy booster that had successfully completed a soft vertical splashdown during the fourth Starship/Superheavy test flight on June 6, 2024.

Confirmation of the recovery project came from a group of young, independent filmmakers who caught wind of the operation and chartered a boat for the 15-mile trip to the Ridgewind to see for themselves what was going on.

…After a two-and-a-half-hour cruise they were about a half mile from the Ridgewind when a drone buzzed toward them. It hovered for a moment before a voice announced through a loudspeaker: “There is a one mile exclusion zone in this area, please depart one mile away from vessel.”

The filmmakers retreated as requested, but then remained there for awhile, observing operations from a distance. They later contacted SpaceX.

The Interstellar Gateway crew reached out to SpaceX, which Leal said quickly confirmed it had contracted with Hornbeck to recover the giant booster. It asked the filmmakers to refrain from announcing the find until after the Ridgewind completed its work and began steaming to port. That happened Sunday.

The filmmakers are one of the number of independent live stream groups that record launches, and made it clear it announcing the salvage work that they respected SpaceX’s request because they knew it was entirely reasonable — to avoid safety problems that could be caused by others boating over — and that they had no desire to hinder SpaceX’s effort.

The article, from a mainstream Democratic Party propaganda source, however tried to slam SpaceX for its “secretive nature,” something that is so untrue only a Democrat shill could write it with a straight face. It also spent a lot of time criticizing the company for creating that one-mile safety exclusion zone around its salvage operations, questioning SpaceX’s “authority” to do so.

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Chinese pseudo-company almost succeeds in vertically landing test rocket

9:00 am

The Chinese pseudo-company Deep Blue Aerospace this weekend almost succeeded in vertically landing a grasshopper-type test rocket, its engines cutting off just before landing so that when the rocket hit the ground the impact was too much for its landing legs.

I have embedded video of the flight and crash landing below. The footage has a AI feel to it, for several reasons. First the camera is a fisheye lens, creating distortion. Second, this test grasshopper-type rocket is quite small, much smaller than the company wants you to realize, thus allowing the drone to fly around during its flight it in a somewhat spectacular manner.

The company stated that the test completed 10 of 11 engineering goals. It will have to rebuild a new test lander however to achieve that last and most important goal, landing without damage to allow immediate reflight. Regardless, this test means that China is finally getting close to achieving rocket reusablity, something it promised in 2018 it would achieve by 2020.

Note also that though this pseudo-company will likely not release its data to the other Chinese pseudo-companies, if China’s government wants to expropriate it for its own government rockets it will do so, and in fact likely has.
» Read more

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China and Rocket Lab complete launches

3:11 pm

Yesterday there were two more launches. First China’s Long March 2D rocket in the very early morning hours lifted off from its Taiyuan spaceport in northern China, placing six satellites in orbit.

The satellites are part of a constellation for doing high resolution Earth observations. No word on where the rocket’s lower stages, using very toxic hypergolic fuel, crashed inside China.

Next Rocket Lab successfully launched five satellites for the French satellite company Kinéis. This was the second of five planned launches by Rocket Lab to put the entire 25 satellite internet-of-things constellation into orbit. It was also the second attempt to launch, with the first experiencing a launch abort at T-0 seconds due to a ground-system issue.

The launch pace is beginning to heat up. There were four launches yesterday, two from China, one from SpaceX and one from Rocket Lab. The leaders in the 2024 launch race:

93 SpaceX
41 China
11 Russia
11 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 109 to 63, while SpaceX by itself now leads the entire world, including American companies, 93 to 79.

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Boeing replaces the head of its defense/space/security division

4:24 pm

Ted Colbert
Ted Colbert

Boeing today announced that the head of its defense/space/security division, Ted Colbert, has been removed, effective immediately.

New Boeing CEO Kelly Ortberg in his first significant move since taking over in August, said Ted Colbert would be leaving and Steve Parker, the unit’s chief operating officer, would assume Colbert’s responsibilities until a replacement is named at a later date.

One project that Colbert was in charge of was Starliner, a program that has cost the company at least $1.6 billion in overruns because of numerous faulty engineering problems.

Colbert might not be to blame for the endless problems at Starliner, but the fish stinks from the head. He also might be very qualified, but sadly, as his picture shows, he is a minority, and since Boeing went all in on DEI racist hiring quotas a few years ago, which makes the skin color and gender of an applicant a major qualification in hiring, one can’t help wondering if he was a DEI (Didn’t Earn It) hire. At Boeing that policy created a goal to increase black staffing by 20%. Its full report [pdf] makes it very clear it no longer made talent, experience, or skill the primary qualification for getting hired, but skin color and sex took precedence.

As I said, one cannot help wondering if Colbert was hired not because of his great management and engineering knowledge, but because he happened to born with a dark skin color. If so, that might help explain the failures in this paricular division.

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China’s solid-fueled Kuaizhou-1A rocket launches four satellites

4:05 pm

China this afternoon launched four satellites using its solid-fueled Kuaizhou-1A rocket, lifting off from its Xichang spaceport in the southwest of China.

It is unclear what the satellites purpose are, though there are hints they are part of a constellation providing communications for the internet of things. No word was also released where the rocket’s lower stages crashed in China.

The leaders in the 2024 launch race:

93 SpaceX
40 China
11 Russia
10 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 108 to 62, while SpaceX by itself now leads the entire world, including American companies, 93 to 77.

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September 20, 2024 Quick space links

4:00 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

 

 

5 comments

Land of cracks

1:26 pm

Land of cracks

Cool image time! The picture to the right, cropped to post here, was taken on June 28, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled a “terrain sample,” it was likely taken not as part of any specific research project but to fill a gap in the camera’s schedule in order to maintain its proper temperature. When the camera team needs to do this, they try to pick something interesting, but don’t always have that option.

In this case, the landscape available included the channel shown to the right. About a half mile wide and only about fifty feet deep, the floor of this canyon appears to have a lot of trapped dust, forming ripple dunes, along with a lot of knobby protrusions, likely small mesas. The canyon walls appear layered, with the erosion processes producing different features on opposite sides. On the southeast the layers appear to produce distinct terraces, while on the northwest the cliff is very steep at the top and then forms a long gently descending slope that appears formed of alluvial fill (from that cliff) and formed from erosion and landslides.
» Read more

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A review of Firefly’s new launch facilities in both the U.S. and Sweden

10:19 am

Link here. The company already has leases for launchpads at both Vandenberg and Cape Canaveral, though only the Vandenberg pad is presently operational. It now building new pads in Viriginia at Wallops Island and in Sweden at the commercial Esrange spaceport.

Regarding the purpose of offering a launch site in Europe, Firefly stated to NSF, “The launch cadence will largely be driven by customer demand. With the inaugural Alpha launch from Esrange as early as 2026, the new complex can support commercial customers in the broader European market and enable tactically responsive space missions to further advance national security for NATO countries.”

The company has already completed five launches from Vandenberg, with a sixth upcoming.

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Brazil approves space bill that appears to crush that country’s future in space

10:13 am

The Brazillian legislature has now approved a new space regulatory bill that appears to create a whole range of new agencies and regulatory bodies, all designed to heavily supervise all space activities while giving a great deal of arbitrary power to the government.

The quote below says it all. Note that the term “space operators” refers to any private aerospace operation.

The [government] may economically exploit, directly or indirectly, without bidding, the space infrastructure, including ground equipment and logistical resources, installations and computer systems necessary to carry out space activities.

The regulatory authorities, AEB and the Air Force Command, will have free access to the facilities and equipment of space operators. They may, at any time, cancel or change the licenses granted in the event of non-compliance with obligations or when there is a threat to national security or violation of international commitments. Even if its activities are suspended or canceled, the operator remains responsible for the artifacts that are in operation. [emphasis mine]

There is a lot more, all of it adding more heavy regulation while imposing great responsibilities both legal and financial on the private companies, all to the benefit of the government.

Who is going to invest billions, even millions, under such an arbitrary regime? No one, especially because the Brazillian government has already proven its willingness to unilaterially block or take over private companies with its actions in connection with Starlink and X.

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SpaceX finds a way to extend the launch window for Europa Clipper

10:03 am

The launch window for SpaceX’s launch of NASA’s Europa Clipper to Jupiter has now been extended a full week because the company has revised the launch process and made hardware changes.

The new launch window runs from October 10th to November 6th.

Usually the two side boosters come back to land at Cape Canaveral Space Force Station so they can be reused and sometimes the core booster is recovered at sea, but not this time. All their fuel will be used to get Europa Clipper on its way to Jupiter. Piloto said SpaceX “made some hardware modifications that enable the launch vehicle to utilize all the fuel in the boosters,” but couldn’t go into detail about what they are because the information is proprietary.

[The NASA official] added that SpaceX has gained experience in flying this configuration — it’s the 11th Falcon Heavy launch — and the company has “come up with a strategy to optimize throttling of the launch vehicle to get more performance out of it.”

NASA and SpaceX have also decided to use NASA’s orbiting communications constellation during the launch instead of ground stations, which increases their flexibility and margins.

I wonder if the FAA has approved these changes. Or even if anyone there even understands them.

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SpaceX and Elon Musk blast the FAA’s red tape again

9:54 am

Are Americans finally waking up and emulating their country's founders?

Fight! Fight! Fight! Yesterday both SpaceX and Elon Musk renewed their attack on the FAA’s apparent arbitrary harassment of the company, both by slowing down development of Starship/Superheavy as well as imposing fines and delays on the company for petty issues relating to Falcon 9 launches.

First, Elon Musk sent out a tweet on X, highlighting a successful static fire launchpad engine test of the Starship prototype the company plans to fly on the sixth Starship/Superheavy orbital flight. As he noted with apparent disgust, “Flight 5 is built and ready to fly. Flight 6 will be ready to fly before Flight 5 even gets approved by FAA!”

Second, and with more force, the company released a public letter that it has sent to the leading Republican and Democratic representatives of the House and Senate committees that have direct authority over space activities, outlining its issues with the FAA’s behavior. The letter details at length the irrational and inexplicable slowdown in FAA approvals that caused two launches last summer to occur in a confused manner, with SpaceX clearly given the impression by the FAA that it could go ahead which the FAA now denies. In one case the FAA claims SpaceX removed without its permission a poll of mission control during its countdown procedure. SpaceX in its letter noted bluntly that the regulations do not require that poll, and that the company already requires two other polls during the count.

In another case involving SpaceX’s plan to change to a new mission control center, the company submitted its request in June, and after two months the FAA finally approved the control center’s use for one launch, but had still not approved it for a second. The first launch went off, so SpaceX thus rightly assumed it could use the control center for the second. Yet the FAA is now trying to fine SpaceX for that second launch.

The third case of FAA misconduct appears to be the most egregious. » Read more

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SpaceX launches 21 more Starlink satellites

8:58 am

SpaceX this morning successfully launched another 21 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg in California.

The first stage completed its thirteenth flight, landing on a drone ship in the Pacific.

The leaders in the 2024 launch race:

93 SpaceX
39 China
11 Russia
10 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 108 to 61, while SpaceX by itself now leads the entire world, including American companies, 93 to 76.

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China launches two GPS-type satellites

4:06 pm

China today successfully launched two more BeiDou satellites for its GPS-type navigation constellation, its Long March 3B rocket lifting off from its Xichang spaceport in the southwest of China.

No word on where the strap-on boosters and lower stages crashed in China, all using toxic hypergolic fuels.

The leaders in the 2024 launch race:

92 SpaceX
39 China
11 Russia
10 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 107 to 61, while SpaceX by itself still leads the entire world, including American companies, 92 to 76.

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September 19, 2024 Quick space links

4:01 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

 

 

 

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The Democrats: 28% think it would be a good thing if Trump were killed

2:05 pm

Poll proving how murderous the Democrats have become
Click for original image.

The Democrats and their supporters might claim they stand for democracy and freedom and fair elections, but their own words prove this endlessly to be a lie. In a new poll of a 1,000 registered voters, 28% of the Democrats thought the country would be better off if Trump were assassinated.

Sadly, as shown by the graph to the right, 7% of the Republicans polled also thought killing Trump would a good thing.

The difference between the two numbers however illustrates the stark difference between the two parties, and helps explain why there have been two assassination attempts on Trump and none on the Democratic Party candidates. Republicans mostly support democracy and free and fair elections. A large percentage of Democrats no longer do.

Furthermore, Democrats also appear to be so filled with their hatred of Trump and any opposition that they can no longer think rationally about anything. The poll also found that 70% believed it likely or somewhat likely that the second assassination attempt was faked by Trump and his campaign.

All of this hatred among grassroots Democrats is worsened because the leadership of the Democratic Party keeps feeding it. » Read more

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Webb takes an infrared look at a galaxy looked at by Hubble

12:21 pm

Comparing Hubble with Webb
For original images go here and here.

Cool image time! The bottom picture on the right, cropped to post here, is a just released false color infrared image of the galaxy Arp 107, taken by the Webb Space Telescope. The picture at the top is a previously released optical image taken by the Hubble Space Telescope and featured as a cool image back in September 2023. The Hubble image was taken as part of a survey project to photograph the entire Arp catalog of 338 “peculiar galaxies,” put together by astronomer Halton Arp in 1966. In this case Arp 107 is peculiar because it is actually two galaxies in the process of merging. It is also peculiar because the galaxy on the left has an active galactic nuclei (AGN), where a supermassive black hole is sucking up material and thus emitting a lot of energy.

The Webb infrared image was taken to supplement that optical image. The blue spiral arms indicate dust and star-forming regions. The bright orange object in the center of the galaxy is that AGN, clearly defined by Webb’s infrared camera.

When I posted the Hubble image in 2023, I noted that “if you ignore the blue whorls of the left galaxy, the two bright cores of these merging galaxies are about the same size.” In the Webb image the two cores still appear about the same size, but in the infrared they produce emissions in decidedly different wavelengths, as shown by the different false colors of orange and blue. The core of the galaxy on the right is dust filled and forming stars, while the core of the left galaxy appears to have less dust with all of its emissions resulting from the energy produced by the material being pulled into the supermassive black hole.

The universe is very active and changing, but to understand that process we humans have to look at everything across the entire electromagnetic spectrum, not just in the optical wavelengths our eyes see.

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Newly discovered potentially dangerous asteroid found to be a contact binary

11:38 am

Radar images of asteroid 2024ON
Click for original image.

Radar images taken during the close fly of a newly discovered potentially dangerous asteroid has revealed that it is a contact binary, formed by two objects stuck together to produce a single asteroid with a peanutlike shape.

Discovered by the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS) on Mauna Loa in Hawaii on July 27, the near-Earth asteroid’s shape resembles that of a peanut. Like the asteroid 2024 JV33 that made close approach with Earth a month earlier, 2024 ON is likely a contact binary, with two rounded lobes separated by a pronounced neck, one lobe about 50% larger than the other. The radar images determined that it is about 755 feet (350 meters) long. Features larger than 12.3 feet (3.75 meters) across can be seen on the surface. Bright radar spots on the asteroid’s surface likely indicate large boulders. The images show about 90% of one rotation over the course of about six hours.

The radar images were taken one day before that close approach of 620,000 miles on September 17, 2024, and once again show that a large number of near-Earth asteroids, as much as 14%, are contact binaries. The data also helped better refine 2024ON’s orbit around the Sun, which show that though the asteroid has the potential to hit the Earth, its path will not do so for the foreseeable future.

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Phobos rising and Earth setting as captured together by Curiosity

10:56 am

Phobos and Earth in the Martian sky
Click for original image.

Cool image time! The picture to the right, enhanced and reduced to post here, was taken by the high resolution camera on the Mars rover Curiosity on September 5, 2024.

What makes this picture unique are the two tiny spots near the upper right. For the first time, Curiosity’s camera was able to capture both the Earth and the Martian moon Phobos in the same picture, when they were also very close to each other in the sky. From the caption:

NASA’s Curiosity Mars rover used its Mast Camera, or Mastcam, to capture this view of Earth setting while Phobos, one of Mars’ two moons, is rising. It’s the first time an image of the two celestial bodies have been captured together from the surface of Mars.

The image is a composite of five short exposures and 12 long exposures all taken on Sept. 5, 2024, the 4,295th Martian day, or sol, of Curiosity’s mission. An inset in the image [found here] shows Phobos on the left and Earth on the right. From the rover’s perspective, the inset area would be about half the width of a thumb held at arm’s length.

The dark shape in the lower left is one of the buttes that surround Curiosity as it has been climbing up Mount Sharp and traversing inside the Gediz Vallis slot canyon.

The inset provides a close-up of the two objects, but the resolution is poor. To me, it is much more interesting to look at the picture to the right, that shows what these two objects actually looked like in the sky of Mars.

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FCC commissioner slams FCC for its partisan hostility to SpaceX

10:27 am

The FCC proves its partisan hostility to SpaceX
The FCC proves its partisan hostility to SpaceX

Even as the FAA has increasingly appeared to be harassing SpaceX with red tape, FCC commissioner Brendan Carr this week slammed his own agency for what appears to be clearly partisan hostility to SpaceX in its recent decisions and public statements.

Carr noted how only last year the FCC had canceled an almost $900 million grant that it had previously awarded to SpaceX for providing rural communities internet access. When it did so, the FCC claimed that the company had failed to “demonstrate that it could deliver the promised service.”

That claim of course was absurd on its face, considering that Starlink was the only available commercial system that was actually doing this, directly to individual rural customers.

Carr noted however that this absurd FCC decision was made even more ridiculous this week by the FCC’s chairperson, Jessica Rosenworcel, who accused SpaceX of being a “monopoly” because of its success in launching Starlink satellites and providing this service ahead of everyone else.
» Read more

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Sierra Space successfully tests equipment for extracting oxygen from the lunar soil

9:57 am

In a press release this week Sierra Space revealed that it has successfully tested an extraction system that can gather up the abrasive lunar regolith and then heat it to high temperatures in order to extract and use the oxygen contained in that soil.

Temperatures in which the Sierra Space Carbothermal Oxygen Production Reactor were tested ranged from minus 45 degrees Celsius to 1,800 degrees Celsius. In addition to the challenges of functioning from sub-zero to hotter-than-lava temperatures, the hardware was required to move the simulated lunar regolith – a very abrasive and jagged material because it does not have the weathering processes found on Earth – through its system. The potentially damaging particles were handled effectively by the hardware and gasses were successfully sealed inside the reactor, thanks to Sierra Space’s use of a patent-pending valve design that previously demonstrated functionality to greater than 10,000 cycles.

The tests confirmed that Sierra Space’s system can successfully handle regolith that would be delivered from a lunar rover or robotic arm and automatically bring it into the reaction chamber, perform the carbothermal reduction reaction process to extract the oxygen from the minerals in the regolith, and remove the processed regolith from the system so the operation can be repeated.

This research is similar to the extraction system the Chinese are developing, though it appears Sierra’s system appears considerably closer to a finished product, as it is already being tested.

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