Tag: engineering

Russia’s Soyuz-2 rocket launches classified payloads

9:21 am

Russia yesterday placed an unnamed number of classified satellites into orbit, its Soyuz-2 rocket lifting off from its Plesetsk spaceport in the northern part of Russia.

The flight path went north, so the rocket’s four strap-on boosters and lower stages all fell in remote regions or in the Arctic Ocean.

The leaders in the 2024 launch race:

51 SpaceX
21 China
7 Russia
5 Rocket Lab

American private enterprise still leads the world combined in successful launches, 58 to 34. SpaceX by itself still leads the rest of the world, including other American companies, 51 to 41.

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NASA versus Isaacman/SpaceX on upgrading Hubble

12:19 pm

Link here. The NPR article is a long detailed look at NASA on-going review of the proposal by billionaire astronaut Jared Isaacman and SpaceX to to do a maintenance mission to the Hubble Space Telescope.

The NPR spin is subtly hostile to the mission, because it would be funded privately and run entirely by private citizens, not the government. Like all modern leftist news outlets, it can only imagine the government capable of doing such things properly.

Reading between the lines, however, what I instead sense is that NASA and the scientific community is generally quite enthusiastic about this proposal, but wants to make sure it not only is done safely but does nothing to harm Hubble in any way, both completely reasonable concerns. While there appear to be some individuals who are opposed for purely political and egotistically reasons — a desire to keep control of this turf no matter what — I don’t see that faction having much influence long term.

Whether this project can go forward I think will be largely determined by the success or failure of Isaacman’s next manned flight, dubbed Polaris Dawn and scheduled for this summer. On it he will attempt the first spacewalk by a private citizen, using SpaceX’s Resilience capsule and EVA spacesuit. If that spacewalk is a success, and he can demonstrate the ability to accomplish some complex tasks during the EVA, it will certainly ease the concerns of many about a follow-up repair mission to Hubble.

If it does proceed, the goal appears to be to attach new gyroscope hardware to the outside of Hubble, rather than replace the failed gyroscopes already in place. Such an approach will be simpler and more in line with the capabilities of a Dragon capsule, compared to the repair work the astronauts did on the space shuttle.

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AST SpaceMobile makes deal with ATT to use its cell-to-satellite constellation

11:59 am

AST SpaceMobile, which launched in 2022 its first satellite for direct cellphone-to-satellite communications and has been successfully testing it since, has now signed a deal with ATT, which wants to use the company’s planned constellation of five such satellites, scheduled for launch this summer.

Nor is this the only satellite company launching such satellites. SpaceX has already launched several dozen Starlink satellites adapted for direct cell-to-satellite service. In addition, it appears that all the companies making smart phones are adding features to their phones that would allow this capability in the future.

Once operational, these satellites will act as orbiting cell towers, and will thus eliminate most of the dead zones in all the populated regions on Earth.

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Private satellite snaps picture of ISS in orbit

10:37 am

ISS as seen by HEO Robotics satellite
Click for original image.

One of the satellites in the commercial satellite constellation run by the Australian company HEO Robotics to monitor objects in space successfully took a picture of ISS this week as it zipped by only 43 miles away.

That picture is to the right, reduced to post here. The relative speeds between the satellite and ISS was about 3.7 miles a second. The station’s main truss, which holds up its solar panels and heat radiators, is the vertical structure going from upper left to lower right. The habitable modules cross this at right angles, with what appears to be the Russian section on the right with a Soyuz or Progress docked to the port at the end. A Dragon capsule can be seen at the opposite end, docked to the American section on the left.

The company’s satellites have previously provided imagery of other objects in orbit, including the ERS-2 satellite just before it was de-orbited as well as China’s Tiangong-3 space station during its assembly.

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Potentially serious problem on BepiColombo Mercury mission

10:14 am

According to the European Space Agency (ESA), engineers have discovered what could be a potentially serious problem on BepiColombo mission that is presently on its way to Mercury.

The solar arrays and electric propulsion system on the Mercury Transfer Module are used to generate thrust during the spacecraft’s complex journey from Earth to Mercury.

However, on 26 April, as BepiColombo was scheduled to begin its next manoeuvre, the Transfer Module failed to deliver enough electrical power to the spacecraft’s thrusters.

A combined team from ESA and the mission’s industrial partners set to work the moment the issue was identified. By 7 May, they had restored BepiColombo’s thrust to approximately 90% of its previous level. However, the Transfer Module’s available power is still lower than it should be, and so full thrust cannot yet be restored.

The press release implies that this issue won’t prevent the spacecraft from entering orbit around Mercury as scheduled in December 2025, but one wonders how that could be if it doesn’t have sufficient power to do the proper course correction during its last major flyby of Mercury in September 2024. If it misses its precise route in ’24 it could miss Mercury entirely in ’25.

Engineers are analyzing the situation to see what can be done to get it to Mercury, while also trying to figure out what caused this power problem in the first place in order to fix it.

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Juno looks down at Jupiter

9:50 am

Jupiter as seen by Juno on May 12, 2024
Click for original image.

Cool image time! The picture to the right, rotated, reduced, and annotated to post here, was taken on May 12, 2024 by the camera on the Jupiter orbiter Juno during its most recent close-fly of the gas giant, its sixty-first since it arrived in 2016. The picture was snapped when Juno was about 34,674 miles away from Jupiter as it flew over the northern hemisphere.

Citizen scientist Thomas Thomopoulos then took that raw image and enhanced and enlarged it to bring out the storm details. You can see the distinct bands that cut across Jupiter’s equatorial and mid-latitudes. The reddish band is where the Great Red Spot is located, though that spot is not seen in this picture.

As we move north those bands slowly transition into the chaotic storms of the polar regions, which also circle the pole but do not form bands.

For scale I have added a circle that approximates the Earth’s size in comparison to Jupiter. You will notice that some of those polar storms are as big if not bigger than the Earth itself. To think we presently have any real understanding of the processes that create Jupiter’s climate and weather systems is to be arrogant beyond belief.

Fortunately, the scientists who study Jupiter are not that arrogant, though they often can’t admit it and are forced to sound otherwise when ignorant journalists and NASA managers demand more answers from them then are possible. The scientists understand that what makes pictures like this intriguing is not what it tells us but the amount of ignorance it reveals. To get funding for future research however sometimes requires they sound more knowledgeable than they are.

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FAA schedules first three public meetings for Starship/Superheavy impact statement review

8:48 am

The FAA has now scheduled the first three public meetings as part of its new environmental impact statement review of SpaceX’s proposed construction plans at Cape Canaveral.

The in-person open houses will feature information stations where the FAA will “provide information describing the purpose of the scoping meetings, project schedule, opportunities for public involvement, proposed action and alternatives summary, and environmental resource area summary. Fact sheets will be made available containing similar information,” the project website says.

“At any time during the meetings, the public will have the opportunity to provide verbal comments to a court reporter or written comments via a written comment form at one of several commenting stations,” the website says.

It appears that SpaceX is proposing two different options for establishing an additional launchpad for Superheavy/Starship. Its preferred option is to refurbish pad LC-37, which was most recenly used by ULA to launch its Delta-4 Heavy in April. A second option is to develop a new pad entirely, dubbed LC-50.

Though the FAA claims this new impact statement is necessary because SpaceX has upped the planned annual Superheavy/Starship launches from 24 to 44, that claim is bogus. The difference is not that significant, and more important, rockets have been launching from these pads now for almost three-quarters of a century, and the environment has not only not been harmed by that activity, the wildlife surrounding the cape has prospered tremendously by the creation of a large zone where no development can occur.

That history is the real impact statement, and it proves the new red tape is unecessary. What the FAA (and the Air Force) are now doing is simply lawfare against SpaceX.

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Ispace gets a new payload for its first NASA lunar landing mission

1:33 pm

Capitalism in space: The Japanese company Ispace has won a contract with the European company Control Data Systems (CDS) to place CDS’s precise localization instrument on Ispace’s APEX lunar lander, its first NASA mission.

CDS’s technology, which combines precision localization with telecommunications, uses Ultra-Wideband for determining precise positions and was developed specifically for space applications with support from the European Space Agency. The lack of a GPS-like system on the Moon, makes the technology ground-breaking for future applications related to lunar exploration.

The agreement … also represents the first Romanian payload to be delivered to the lunar surface. The technology will be integrated into the APEX 1.0 lunar lander as part of ispace technologies U.S. (ispace-U.S.) Mission 3, currently scheduled for 2026. A lunar rover will transport the CDS equipment on the surface to test the localization technology using an antenna that will remain on the APEX 1.0 lander.

Though Ispace is based in Japan, it has divisions in both the U.S. and Europe, which is allowing it to sign contracts with NASA and companies in both locations.

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Atlas-5 launch of Starliner slips to May 21, 2024

1:25 pm

While ULA has successfully replaced the valve in the upper stage of the Atlas-5 rocket, the first manned launch of Boeing’s Starliner capsule has slipped another four days, to May 21, 2024, because a newly discovered helium leak in the capsule’s service module.

Starliner teams are working to resolve a small helium leak detected in the spacecraft’s service module traced to a flange on a single reaction control system thruster. Helium is used in spacecraft thruster systems to allow the thrusters to fire and is not combustible or toxic.

NASA and Boeing are developing spacecraft testing and operational solutions to address the issue. As a part of the testing, Boeing will bring the propulsion system up to flight pressurization just as it does prior to launch, and then allow the helium system to vent naturally to validate existing data and strengthen flight rationale.

The prevous launch scrub was entirely due to the ULA’s rocket, not anything related to Boeing. This delay however is a Boeing issue, and it only reinforces the general uneasiness everyone feels about Boeing’s quality control work.

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SpaceX launches 20 more Starlink satellites

12:01 pm

SpaceX last night successfully placed another 20 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Vandenberg in California.

The first stage completed its eighteenth launch, landing on a drone ship in the Pacific.

The leaders in the 2024 launch race:

51 SpaceX
21 China
6 Russia
5 Rocket Lab

American private enterprise now leads the world combined in successful launches, 58 to 33. SpaceX by itself now leads the rest of the world, including other American companies, 51 to 40.

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Curiosity looks forward and back

11:34 am

Panorama looking north
Click for original image.

Overview map
Click for interactive map

The images above and below are small sections from 360 degree panorama created on May 13, 2024 from 31 photos taken by the right navigation camera on the Mars rover Curiosity.

The overview map to the right provides the context. The red dotted line indicates Curiosity’s planned route, while the white dotted line its actual route. The rover’s present position is marked by the blue dot. The yellow lines indicate the area covered by the picture above, while the green lines indicate the area covered by the picture below.

The image above looks north, back down Gediz Vallis and across to the north rim of Gale Crater, about 20-25 miles away. The red dotted line marks the rover’s path to get up to this point. All told, Curiosity has climbed about 2,500 feet in elevation since it left the floor of Gale Crater about nine years ago.

The image below looks south, up Gediz Vallis and towards the peak of Mount Sharp (not visible), about 26 miles away and about 16,000 feet higher up. Curiosity might move forward about 500 feet to the small hill on the left (indicated by the red dot), or it might turn west from this point, as indicated by the red dotted line on the overview map.

Panorama looking south
Click for original image.

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A planet with the density of cotton candy?

10:32 am

The uncertainty of science: According to data obtained from ground-based telescopes of a newly discovered transiting exoplanet, that planet has the density of cotton candy.

This new planet, located 1,200 light-years from Earth, is 50% larger than Jupiter but seven times less massive, giving it an extremely low density comparable to that of cotton candy. “WASP-193b is the second least dense planet discovered to date, after Kepler-51d, which is much smaller,” explains Khalid Barkaoui, a Postdcotral Researcher at ULiège’s EXOTIC Laboratory and first author of the article published in Nature Astronomy. Its extremely low density makes it a real anomaly among the more than five thousand exoplanets discovered to date. This extremely-low-density cannot be reproduced by standard models of irradiated gas giants, even under the unrealistic assumption of a coreless structure.”

Such a gas giant is not impossible. For example, Saturn’s density is so low that if you could find an ocean large enough it would float. The scientists theorize that this exoplanet is likly comprised mostly of hydrogen and helium.

Nonetheless, there are phenomenon here that we certainly do not understand.

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