Tag: spaceflight

Sierra Space confirms its Tenacity spacecraft successfully completed vibration testing

9:16 am

Sierra Space yesterday confirmed that its first Dream Chaser reusable mini-shuttle Tenacity, being readied for a hoped-for April launch, successfully completed vibration testing last month.

Key accomplishments in this first critical phase of pre-flight testing included: the completion of Sine Vibration Testing (in all three axes or directions), a Separation Shock Test that simulates the separation of the Dream Chaser from Shooting Star and a test that involved deploying the spaceplane’s wings. These tests evaluated Dream Chaser’s performance under the stresses of launch, operation in orbit and ability to communicate with the International Space Station (ISS).

What I find revealing about the press release at the link is that it really adds nothing from a NASA press release from a month ago. Then NASA said that Tenacity was about to move to a vacuum chamber for environmental testing. According to this new press release, that move has still not occurred and the environmental test still must begin.

That engineers didn’t move Tenacity to environmental testing while they were reviewing the vibration test data suggests there was something in that test data that prevented it. It appears that unstated issue is resolved, but it caused a pause in testing.

As a result, it appears that an April launch is unlikely delayed by a month or more, assuming my attempt to read between the lines is correct.

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The really really strange landscape of Cydonia on Mars

12:21 pm

Some really strange terrain on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on January 3, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO), and shows what the camera team describes merely as “landforms.”

In truth, these features, as well as almost everything in the surrounding terrain beyond the edge of this picture, are possibly the weirdest geological features on Mars. The two mounds, no more than fifteen feet high at the most, resemble pimples. The rough ground to the north actually appears to be some flow that worked its way around the mounds, as indicated by the arrows. The crack to the southeast of the two mounds appears to be an extension of a fault line that cuts through the center of the larger mound, suggesting the mound is some form of eruption belching out of that fissure.

That the latitude is 42 degrees north, these weird features all suggest some form of ice-based volcanic activity, because the ground here is probably impregnated with ice.

As for the bridge connecting the two mounds, who knows what caused it?
» Read more

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Another woman sues SpaceX for sexual discrimination and retaliation

10:10 am

On March 5, 2024 Michelle Dopak filed a lawsuit against SpaceX for sexual discrimination and retaliation, claiming the company paid her less than male workers, refused to promote her, and ignored her complaints about sexual abuse by her married manager that eventually led to a pregnancy.

Dopak said in the suit that in 2020, her manager offered her $100,000 to have an abortion, which she declined. She is suing the company for an unspecified amount of damages. Reuters was first to report the existence of the lawsuit. Dopak accused SpaceX of colluding with her former manager by allowing him to transfer $3.7 million in SpaceX stock out of his name to evade child support payments, according to the lawsuit obtained by Business Insider.

This suit is one now of several discrimination suits against the company. Unlike the others, however, if Dopak’s accusations prove true it would be the most damaging of all, since she claims the company itself took action against her to protect this manager. The other suits appear more frivolous on their face, issued by individuals claiming to have been fired by SpaceX for their opinions, when the facts strongly suggest they were more interested in causing trouble at the company then doing their job, and thus deserved to be fired.

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NJ man arrested for trafficking 675 Starlink terminals illegally

10:00 am

A New Jersey man was arrested on December 4, 2023 while driving a vehicle carrying more than two hundred Starlink terminals, and later charged with trafficking 675 Starlink terminals that he obtained illegally using “stolen credit card accounts or hacked Starlink billing accounts.”

The man, 35-year-old Kelvin Rodriguez-Moya, was stopped by police Dec. 4 while driving 223 Starlink terminals in a pickup truck and trailer after leaving a residence in Lawrence Township, New Jersey, a criminal complaint said. The terminals had shipping labels addressed to multiple different names at the same address.

Lawrence Township police had been tipped off about a suspiciously large number of Starlink terminals being shipped to that home, the complaint said. Detectives then witnessed Rodriguez-Moya loading a FedEx shipment of terminals onto the truck and trailer.

SpaceX is working with the police to determine how Rodriguez-Moya obtained so many terminals. I suspect it was because so much of Starlink operations are automated. The computer programs that issue terminals to new customers aren’t smart enough to notice such things.

This case might also help explain the stories in both Russia and Botswana of unauthorized terminals being sold.

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Blue Origin completes first round of launchpad/New Glenn tanking tests

9:52 am

Link here. In the past week or so Blue Origin has done three tanking tests of its assembled engineering test rocket, simulating fueling of a New Glenn rocket on the launchpad, and now intends to roll that test vehicle back to its rocket assembly building.

From here, it is most likely that the rocket will be prepared for the next round of testing, which will include a static fire of the seven first-stage BE-4 engines. This test will mark the first time that Blue Origin’s BE-4 engines will ignite while integrated with a New Glenn first stage. It will also be the first time that the new launch pad supports an engine firing.

The company continues to aim for a first test launch of New Glenn before the end of the year, and these tests strengthen the likelihood that this schedule is realistic.

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UK government to invest £10 million in Saxavord spaceport

9:45 am

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea.

The government of the United Kingdom announced yesterday that it will directly invest £10 million in the Saxavord spaceport being built on one of the Shetland Islands, as shown on the map to the right.

Coming in addition to around £40 million of private investment, the government funding will allow SaxaVord to accelerate its capital works programme to ensure it is ready to support the first orbital launch.

That capital works program was forced to shut down last year when red tape at the Civil Aviation Authority (CAA) delayed the licensing of Saxavord. It could be this grant has been issued partly to repay the losses the spaceport company experienced due to those bureaucratic delays. The timing kind of reinforces this speculation, as only yesterday Saxavord got its spaceport license approved, though other approvals remain pending.

All this news suggests strongly that the first test flight at Saxavord by the German rocket startup Rocket Factory Augsburg will occur later this year, as promised.

Meanwhile, the other spaceport in Sutherland must be wondering if it can get similar government aid, or if the government is now playing favorites.

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SpaceX: We want to fly next Starship/Superheavy test launch on March 14, 2024

9:07 am

In a tweet yesterday SpaceX announced an update on its Starship webpage, outlining its plans for the third orbital test launch of its heavy-lift Starship/Superheavy rocket, with March 14, 2024 listed as the hoped-for launch date.

The update began with these cautionary words, “pending regulatory approval,” and then went on to describe details of the test flight:

The third flight test aims to build on what we’ve learned from previous flights while attempting a number of ambitious objectives, including the successful ascent burn of both stages, opening and closing Starship’s payload door, a propellant transfer demonstration during the upper stage’s coast phase, the first ever re-light of a Raptor engine while in space, and a controlled reentry of Starship. It will also fly a new trajectory, with Starship targeted to splashdown in the Indian Ocean. This new flight path enables us to attempt new techniques like in-space engine burns while maximizing public safety.

I suspect the change in the splashdown location, from northeast of the main island of Hawaii, was instigated by the FAA for those “public safety reasons”. From SpaceX’s perspective, this is an easy give, as a slightly shorter flight makes little difference for this test, and it allows the company to test that Raptor engine by firing that de-orbit burn.

Will the flight occur on March 14th? The odds are high, partly because this SpaceX announcement is designed to put pressure on the bureaucrats at the FAA to finish their paperwork already. At the same time, bureaucrats sometimes love to stick it to private citizens, just for fun. We shall see.

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Is this really a spiral galaxy?

10:16 am

Is this really a spiral galaxy?

The uncertainty of science: The picture to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope and released on March 4, 2024 by the PR department of the European Space Agency (ESA) as part of its Hubble Picture of the Week program. It shows what the press release claims is a spiral galaxy about 55 million light years away, seen edge on.

In this image NGC 4423 appears to have quite an irregular, tubular form, so it might be surprising to find out that it is in fact a spiral galaxy. Knowing this, we can make out the denser central bulge of the galaxy, and the less crowded surrounding disc (the part that comprises the spiral arms).

If NGC 4423 were viewed face-on it would resemble the shape that we most associate with spiral galaxies: the spectacular curving arms sweeping out from a bright centre, interspersed with dimmer, darker, less populated regions. But when observing the skies we are constrained by the relative alignments between Earth and the objects that we are observing: we cannot simply reposition Earth so that we can get a better face-on view of NGC 4423!

This picture provides a great example of the amount of assumptions that are often contained in astronomical observations. Though the data strongly suggests this is spiral, we must remember this is merely an educated guess, based on that central bulge and the dust lanes visible along the galaxy’s profile. There is actually no guarantee that this is so. As the press release also notes, astronomers are constrained by our viewpoint, and cannot change that viewpoint to get a better view to confirm this guess. For all we know, a face on veiw of this flat galaxy would reveal it has no spiral arms, but instead is mottled and chaotic, a rare type that does exist.

Astronomers do the best they can, but it is important that they (and we) always recognize the limitations.

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More orbital tugs reach orbit

9:44 am

When SpaceX launches a large number of smallsats and payloads on a Falcon 9 launch, as it did on March 5 from Vandenberg in California, it routinely takes several days or even months for the results from each payload or smallsat to trickle in. Two reports today illustrate the growing cottage industry of orbital tugs.

First, a company named Apex has successfuly demonstrated its first service module for satellites, designed to provide the basic services needed for satellites so that companies can focus on designing their primary mission rather than reinventing a basic satellite each time. The module was launched on March 5th, and has been operating as expected. The company hopes to begin mass producing this service module in a new factory later this year.

Second, a new orbital tug company from France, Exotrail, has successfully deployed a cubesat from its first tug. That tug was launched on a Falcon 9 smallsat launch in November, and has been testing operations since. After releasing that cubesat for Airbus’s defense division, the tug is continuing operations, acting as the service module for a second payload from Belgium that is testing its own gyros and reaction wheels for controling smallsat orientation.

These companies are small, and are focused on very specific technologies needed by smallsats to operate efficiently in space. As such, their achievements are generally more mundane and less exciting that a SpaceX Starship/Superheavy test launch, by many magnitudes. Nonetheless, their success, not only technically but financially, suggests a growing maturity to the in-orbit space industry, which will also lay the groundwork for much more sophisticated operations in the future beyond Earth orbit. The people that build these tugs will move on to build vessels that can go to the planets and do things that are presently impossible or too difficult, and do it at low cost and very quickly.

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Another helicopter mission under development for Mars?

3:17 pm

Another helicopter mission for Mars?
Click for original image.

Today’s cool image to the right, cropped to post here, is probably on its own one of the more boring cool images I have posted over the years, a generally featureless plain with some ripple dunes within a few low hollows.

What makes this picture cool however is the label for the image: “Sample Landing and Traverse Hazards at Possible Helicopter Landing Site.” The picture was taken on January 23, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO), with the obvious goal of seeing whether this location can serve as a landing site for a helicopter mission to Mars.

The site is relatively uninteresting because the first goal is to find a safe place to land, but to do so near a location where there is rough geology which only a helicopter can explore. And it appears, from the overview map below, that is exactly what this location is.
» Read more

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Blue Origin is targeting a first unmanned landing of its manned lunar lander in 2025

10:36 am

Blue Origin's Blue Moon manned lunar lander
An early visualization of Blue Moon

According to one Blue Origin official, the company is now targeting its first unmanned landing of its manned lunar lander, Blue Moon, for sometime in 2025, far sooner than previously expected.

Jeff Bezos’ Blue Origin space venture is aiming to send an uncrewed lander to the surface of the moon in the next 12 to 16 months, according to the executive in charge of the development program. John Couluris, senior vice president for lunar permanence at Blue Origin, provided an update on the company’s moon lander program on CBS’ “60 Minutes” news program on Sunday. “We’re expecting to land on the moon between 12 and 16 months from today,” Couluris said. “I understand I’m saying that publicly, but that’s what our team is aiming towards.”

Blue Moon is shown in the graphic to the right. Though being built to provide NASA a second manned lander in addtion to SpaceX’s Starship, this first mission will simply bring cargo to the surface, as a test of the lander itself.

If Blue Origin can keep even somewhat close to this schedule, we will likely have two manned moon landers doing test flights at almost the same time.

A sidebar: Note the lander’s height, as well as the narrow footprint of its landing legs. New graphics of this lander from Blue Origin show the same high center of gravity with an even narrower footprint for the legs. One wonders why. Wouldn’t it make sense to have those legs deploy outward more?

This issue applies also to SpaceX’s Starship, which will also have a high center of gravity. When SpaceX’s rockets land on Earth (both Falcon 9 boosters and Starship), most of their fuel is gone so the bulk of the mass is near the bottom where the engines are, even though the boosters stand very high. On the Moon however these vehicles will be landing heavily loaded, with cargo and fuel. This raises a stability question that was illustrated sadly by the tipping over recently of Intuitive Machines Odysseus lander.

I am not an engineer, so I admit that my off the cuff analysis here is very questionable. Nonetheless, one wonders.

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Scientists: Europa produces oxygen on its surface, but less than expected

10:18 am

Graphic of Europa
Click for original image.

The uncertainty of science: Scientists using data from a 2022 flyby of the Jupiter moon Europa by the orbiter Juno have determined that the moon produces about 1,000 tons of oxygen every 24 hours on its surface, a large amount but less than most predictions based on previous indirect observations.

The paper’s authors estimate the amount of oxygen produced to be around 26 pounds every second (12 kilograms per second). Previous estimates range from a few pounds to over 2,000 pounds per second (over 1,000 kilograms per second). Scientists believe that some of the oxygen produced in this manner could work its way into the moon’s subsurface ocean as a possible source of metabolic energy.

You can read the paper here. The graphic shows the basic process, as presently theorized. What remains unknown is how or even if that oxygen is transported downward to the theorized underground ocean of liquid water. That the amount created is on the very low end of previous estimates suggests that there will be less free oxygen to support life in that ocean than expected.

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