Tag: engineering

SpaceX launches more Starlink satellites

9:07 am

March on bunny! SpaceX last night successfully launched another 23 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its eighth flight, landing on a drone ship in the Atlantic.

The leaders in the 2024 launch race:

54 SpaceX
23 China
7 Russia
5 Rocket Lab

American private enterprise now leads the world combined in successful launches, 61 to 36, while SpaceX by itself leads the entire world, including other American companies, 54 to 43.

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ESA awards contracts to two companies to build unmanned orbital freighters

10:02 am

The European Space Agency (ESA) today awarded contracts worth 25 million euros each to two European companies — the French startup The Exploration Company and the established Italian contractor Thales-Alenia — to begin development of their own unmanned freighters capable of bringing cargo to and from orbit.

During phase 1 development, the selected companies will mature the design of their respective vehicles, focusing on mission requirements, architectures, technology maturation, and de-risking activities. This phase of development is expected to run from June 2024 to June 2026.

Phase 2 of the initiative will see the companies develop and execute a demonstration mission that must be launched by the end of 2028. However, the commencement of Phase 2 will be subject to decisions and appropriations made at ESA’s next ministerial-level council meeting, which will take place in late 2025.

These contracts only cover phase 1. If successful, these capsules will compete with the cargo capsules that SpaceX, Northrop Grumman, and Sierra Space fly in providing supplies to the four commercial space stations presently being built.

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SpaceX launches NRO reconnaissance satellite(s)

9:44 am

SpaceX last night successfully placed a National Reconnaissance Office (NRO) reconnaissance payload into orbit, its Falcon 9 rocket lifting off from Vandenberg in California. Because of the classified nature of the flight, it is unclear whether the payload is one or several satellites.

The first stage completed its 16th flight, landing on a drone ship in the Pacific. The fairings completed their 12th and 3rd flights respectively.

The leaders in the 2024 launch race:

53 SpaceX
23 China
7 Russia
5 Rocket Lab

American private enterprise still leads the world combined in successful launches, 60 to 36, while SpaceX by itself still leads the entire world, including other American companies, 53 to 43.

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Starliner manned launch delayed again; no new launch announced

9:33 am

In a very terse statement that apparently was only sent out by email to some sources, NASA and Boeing announced last night that the May 25, 2024 launch of the first manned Starliner mission on ULA’s Atlas-5 rocket had been postponed, with no new launch date set.

NASA, Boeing, and ULA are foregoing the Saturday, May 25 launch attempt for NASA’s Boeing Crew Flight Test. The team has been in meetings for two consecutive days, assessing flight rationale, system performance, and redundancy. There is still forward work in these areas, and the next possible launch opportunity is still being discussed.

NASA will share more details once we have a clearer path forward,

The first launch scrub prior to the first launch date of May 6th was due to a valve issue on the Atlas-5 rocket. ULA quickly replaced that valve and the launch was rescheduled for May 17th. Then Boeing engineers detected a helium leak related to one of the attitude thrusters in the capsule’s service module. The launch was first delayed until May 21st, then delayed again until May 25th. Now it is delayed indefinitely.

Whether that helium leak remains the cause of this new delay remains unknown. That no new launch date has been proposed suggests the need to bring the rocket and capsule back to the assembly building to destack it in order to fix the problem. That NASA, Boeing, and ULA are being so coy about revealing any details suggests however that some additional issue might have been uncovered.

Regardless, this new extended delay is very bad publicity for Boeing. While the comparison is somewhat unfair, it continues to make Starliner look like an American version of a Yugo, not the kind of vehicle one would nonchalantly climb into for a flight into space.

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China’s Kuaizhou-11 rocket launches four satellites

9:37 am

China yesterday successfully placed four satellites into orbit, its solid-fueled Kuaizhou-11 rocket lifting off from its Jiuquan spaceport in northwest China.

The only information about the satellites released by China’s state-run press was that one was “an ultra-low orbit technology test satellite,” likely similar to the reconnaissance satellites that Redwire is producing here in the U.S.

The state-run press also made no mention on where the rocket’s lower stages crashed inside China.

The leaders in the 2024 launch race:

52 SpaceX
23 China
7 Russia
5 Rocket Lab

American private enterprise still leads the world combined in successful launches, 59 to 36, while SpaceX by itself still leads the entire world, including other American companies, 52 to 43.

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Sierra Space’s Tenacity mini-shuttle arrives at the Cape

9:30 am

Capitalism in space: Sierra Space’s Tenacity Dream Chaser mini-shuttle has finally arrived at the Kennedy Space Center in Florida for its final testing and assembly onto ULA’s Vulcan rocket.

Upon arrival at Kennedy, teams moved Dream Chaser Tenacity to the high bay inside the Space Systems Processing Facility, where it will undergo final testing and prelaunch processing ahead of its launch scheduled for later this year.

…The remaining pre-flight activities at Kennedy include acoustic and electromagnetic interference and compatibility testing, completion of work on the spaceplane’s thermal protection system, and final payload integration.

If all goes right, Tenacity’s first mission will last 45 days, delivery about 7,800 pounds of cargo to ISS, and prove out the reusable mini-shuttle for up to seven more flights to ISS.

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ESA narrows Ariane-6 launch date to first two weeks in July

9:24 am

In an announcement today, the European Space Agency (ESA) narrowed the launch window for the first launch of its new Ariane-6 rocket to the first two weeks in July.

It also stated that the final launch date will be revealed in the first week of June, during presentations at an air show in Berlin, Germany.

In the next month the rocket will undergo a full dress rehearsal countdown on the launchpad. It will then be “drained of fuel in preparation” for the actual launch.

This rocket is built and mostly owned by the private consortium ArianeGroup, made up of a partnership of Airbus and Safran, and working in conjunction with ESA. Though Arianespace, ESA’s long time commercial arm, is mentioned as ESA’s “launch service provider” for this launch, it is very clear that it is being pushed aside and will soon become irrelevant. The rocket is four years behind schedule and being entirely expendable it is too expensive to compete in the modern launch market. The member nations of ESA have rejected it, and so they are shifting to a capitalism in space model, whereby they no longer have a government commercial “launch service provider” like Arianespace, but instead buy launch services from competing private European rocket companies.

Europe’s problem is that it will take time to develop these private companies. In the interim it will be forced to use Ariane-6, but likely only for a few years. There are at least five new rocket companies in Europe, with three (Rocket Factory Augsburg, PLD, and Hyimpulse) having already completed their first launch tests.

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Blue Origin resumes manned suborbital New Shepard flights

9:09 am

Blue Origin yesterday flew its first suborbital New Shepard flight since a failure during an unmanned flight in 2022, flying six passengers on a short ten-minute jump.

This suborbital flight got a lot of press yesterday and today, but I consider these suborbital tourist flights somewhat old news. Had they occurred two decades ago, in the 2000s as promised, they could have helped trigger the commercial space industry. Instead, both Blue Origin and Virgin Galactic took another two decades to get started, and by that time orbital tourist flights were taking place.

There might be money to be made in suborbital hops like this, but the future of space exploration lies elsewhere.

As for Blue Origin, this flight confirms that the company has fixed the nozzle issues that caused the September 2022 launch failure. During ascent just after launch the spacecraft’s abort system activated, sending the New Shepard capsule free from the first stage booster, which subsequently crashed. The capsule landed safely with parachutes.

The investigation then stretched out over more than two years. It remains unclear why it took so long, though the FAA’s regulatory burden appears to have been one factor, with Blue Origin’s own sluggish pace of operations another.

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China launches four satellites

8:47 am

China early this morning successfully launched four satellites, its Long March 2D rocket lifting off from its Taiyuan spaceport in the northwest of China.

No further information about the satellites was released. Nor did China’s state-run press provide any information about where the rocket’s lower stages, using toxic hypergolic fuels, crashed within the country.

The leaders in the 2024 launch race:

52 SpaceX
22 China
7 Russia
5 Rocket Lab

American private enterprise still leads the world combined in successful launches, 59 to 35, while SpaceX by itself still leads the entire world, including other American companies, 52 to 42.

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Piece from SpaceX Dragon service module falls on Canadian farm

9:12 am

Though not yet confirmed a 90-pound piece of burned debris that crashed on a Canadian farm and found in late April appears to be a section from the trunk section of a SpaceX Dragon service module.

Jonathan McDowell, who tracks space launches and re-entries, posted on X (formerly Twitter) that the trunk from the private Axiom Space Ax-3 mission fell over Saskatchewan on Feb. 26.

This incident, along with several others over the last few years, tells us that not everything engineers thought would burn up upon re-entry does so. A major rethinking of how objects are de-orbited could be necessary.

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SpaceX launches another 23 Starlink satellites

10:50 pm

This bunny never stops. SpaceX today successfully launched 23 more Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral.

The first stage set a new record for reflights, completing its 21st flight after landing on a drone ship in the Atlantic. The company has said it is upgrading these stages to last for 40 launches instead of 20, and this launch clearly is the first step in that direction.

The leaders in the 2024 launch race:

52 SpaceX
21 China
7 Russia
5 Rocket Lab

American private enterprise now leads the world combined in successful launches, 59 to 34, while SpaceX by itself still leads the rest of the world, including other American companies, 52 to 41.

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Starliner launch delayed again, to May 25, 2024

3:36 pm

Boeing, ULA, and NASA have decided to delay the first manned flight of Boeing’s Starliner capsule another four days to 3:09 pm (Eastern) on May 25, 2024.

The additional time allows teams to further assess a small helium leak in the Boeing Starliner spacecraft’s service module traced to a flange on a single reaction control system thruster. Pressure testing performed on May 15 on the spacecraft’s helium system showed the leak in the flange is stable and would not pose a risk at that level during the flight. The testing also indicated the rest of the thruster system is sealed effectively across the entire service module. Boeing teams are working to develop operational procedures to ensure the system retains sufficient performance capability and appropriate redundancy during the flight.

It appears they simply want to give themselves extra time to review their data thoroughly, with no rush, before lighting the rocket.

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A really really big landslide on Mars

1:22 pm

A really really big landslide on Mars
Click for original image.

Sometimes the cool geological features I find in the Mars Reconnaissance Orbiter (MRO) image archive are so large they are difficult to present on this webpage. Today is an example. The picture to the right, cropped, reduced, and sharpened to post here, was taken on March 13, 2024 by the high resolution camera on MRO. It shows the distinct run-out of debris from a landslide that flowed downhill to the north as a single unit of material. Along the way it carved its track in the ground, almost like a ramp.

The full picture however suggested something much more spectacular. In that full image this landslide is merely a small side avalanche to a landslide many times larger. And that high resolution picture only shows what appears to be a small section of that giant slide. Obviously, this required a look at the global mosaic produced by MRO’s context camera to find out how far that avalanche actually extended.
» Read more

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NASA signs new agreement with ESA to partner on Franklin Mars rover

9:41 am

NASA yesterday signed a new agreement with the European Space Agency (ESA) that confirmed its previous commitment to help land ESA’s Franklin rover on Mars.

With this memorandum of understanding, the NASA Launch Services Program will procure a U.S. commercial launch provider for the Rosalind Franklin rover. The agency will also provide heater units and elements of the propulsion system needed to land on Mars.

Previously NASA had committed $30 million to pay for that launch provider, as yet undetermined. It now wants $49 million for the Franklin mission, with the extra money likely to pay for the new additional equipment outlined in this agreement.

Whether NASA gets this money from Congress however remains unknown. It has not yet been appropriated.

This overall European project has been fraught with problems. It was first designed as a partnership with NASA. Then Obama pulled NASA out in 2012, and ESA switched to a partnership with Russia, which was to provide the rocket and lander. Then in 2022 Russia invaded the Ukraine and Europe broke off all its partnerships with Russia.

Since then ESA has signed a deal with the company Thales Alenia to build the lander.

As these political foibles were going on, the rover also had parachute issues that forced ESA to cancel its original launch date in 2022, using the Russian rocket.

It is likely Congress will approve this additional funding, though it seems to me that Europe should be able to afford paying for its own launch, especially if it is buying that service from the much cheaper U.S. market.

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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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Air Force sends letter of concern about Vulcan to ULA

10:21 am

According to a report yesterday [behind a paywall], the Air Force has sent a letter of concern to ULA and its joint owners, Boeing and Lockheed Martin, about the long delays getting its new Vulcan rocket operational.

When the military chose in 2021 ULA and SpaceX to be its two launch providers for the first half of the 2020s, it expected ULA to complete 60% of the launches and SpaceX 40%. It also expected Vulcan to being launching within a year or two, at the latest.

Instead, the first launch of Vulcan did not occur until 2024, and its second launch — required by the military before it will allow Vulcan to launch its payloads — won’t occur until late this year. Worse, the military has a large backlog of launches it has assigned to Vulcan that need to launch quickly.

“I am growing concerned with ULA’s ability to scale manufacturing of its Vulcan rocket and scale its launch cadence to meet our needs,” [Air Force Assistant Secretary Frank] Calvelli wrote. “Currently there is military satellite capability sitting on the ground due to Vulcan delays. ULA has a backlog of 25 National Security Space Launch (NSSL) Phase 2 Vulcan launches on contract.”

These 25 launches, Calvelli notes, are due to be completed by the end of 2027. He asked Boeing and Lockheed to complete an “independent review” of United Launch Alliance’s ability to scale manufacturing of its Vulcan rockets and meet its commitments to the military. Calvelli also noted that Vulcan has made commitments to launch dozens of satellites for others over that period, a reference to a contract between United Launch Alliance and Amazon for Project Kuiper satellites.

ULA says that once operations ramp up, it plans to launch Vulcan twice a month. The Air Force doubts about whether that will be possible however are well founded. To meet that schedule ULA will need delivery per month of at least four BE-4 engines from Blue Origin, and so far there is no indication the Bezos company can meet that demand. Delays at Blue Origin in developing that engine are the main reason Vulcan is so far behind schedule in the first place.

In order to get Vulcan operational, ULA needs to fly a second time successfully. The second launch of Sierra Space’s Tenacity mini-shuttle is booked for that flight, and was originally supposed to launch this spring. Tenacity however was not ready, as it is still undergoing final ground testing. The launch is now set for the fall, but both ULA and the Pentagon are discussing replacing it with a dummy payload should Tenacity experience any more delays.

The source of all of these problems points to Blue Origin. Not only has it been unable to deliver its BE-4 rocket engine on schedule — thus blocking Vulcan — the long delays in developing its own New Glenn orbital rocket (which uses seven BE-4 engines) has given the military fewer launch options. As a result the military has been left with only one rocket company, SpaceX, capable of launching its large payloads.

To put Blue Origin’s problems in perspective, for Blue Origin to finally achieve its many promises and get both Vulcan and New Glenn flying regularly, it will need to begin producing a minimum of 50 to 150 BE-4 engines per year, with two-thirds for its own New Glenn rocket. Right now all evidence suggests the company is having problems building two per year.

In other words, the Pentagon might send a letter of concern to ULA, but it should instead be focusing its ire on Blue Origin.

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XRISM X-ray space telescope functioning despite closed “aperture door”

9:50 am

XRISM, a joint X-ray space telescope built by NASA and Japan’s space agency JAXA, is collecting data despite the failure on one instrument of an aperture door to open.

In January, project scientists said that XRISM was working well except for an aperture door, also called a gate valve, for the Dewar on its imaging instrument, Resolve, which failed to open. The instrument can still operate with the door closed, although the door, made of beryllium, does attenuate some X-rays at lower energies.

At the time, efforts were underway to try and open the gate valve. However, speaking at a May 7 meeting of the National Academies’ Board on Physics and Astronomy, Mark Clampin, director of NASA’s astrophysics division, said those efforts were on hold for the next year and a half.

Instead, the science team decided to proceed with science operations, since the telescope has two other working instruments, and can get data even from this hindered third.

XRISM is a replacement of a previous JAXA X-ray telescope that launched in 2016 but failed immediately.

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A detailed look, using satellite imagery, of North Korea’s coastal spaceport

9:41 am

North Korea

Link here. The article, written by analysts at the Center for Strategic and International Studies in Washington, describes in detail the work being done in the past few years at North Korea’s Sohae spaceport on that nation’s western coast, as shown on the map to the right.

This work allowed North Korea to complete its first successful orbital satellite launch of its Chollima-1 rocket in November, after two previous failures.

As North Korea releases almost no information, the analysis depended entirely on high resolution orbital data.

While construction of the coastal launch pad is largely complete and work on refurbishing the original launch pad is largely suspended, work is now concentrated on constructing a large new processing/assembly building and an associated underground facility. Several smaller construction projects are also being pursued.

Overall it appears that North Korea is very serious about developing a full spaceport for both satellite and missile launches.

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