Tag: Vulcan

Northrop Grumman completes successful test of new nozzle for its solid-fueled boosters

9:13 am

Unexpected debris falling from rocket at about T-1:00
Nozzle failure during February 12, 2026 Vulcan launch

Northrop Grumman on April 15, 2026 successfully completed a test of a new nozzle design of a GEM solid-fueled booster, the strap-on booster whose nozzle failed on two previous ULA Vulcan rocket launches.

On April 15, the company said Northrop Grumman performed a successful static fire test of a Graphite Epoxy Motor (GEM) 63XL Solid Rocket Booster (SRB). A spokesperson told Spaceflight Now on Thursday that the test served to “demonstrate nozzle design enhancements which were already in work and an advanced propellant technology for future solid rocket motors across their portfolio.”

“The information gathered from this test, along with findings from the investigations will provide critical data to validate analytical models and support Vulcan’s return to flight,” the spokesperson said.

At the moment the Pentagon has grounded all Vulcan launches because of this nozzle issue, and has given several planned Vulcan payloads to SpaceX instead. ULA hopes to resume normal Vulcan flights using GEM boosters before the end of the year, but it also hopes to launch Vulcan sooner without the boosters. It is right now preparing a boosterless Vulcan to do a launch for Amazon, placing an as yet undetermined number of Leo satellites into orbit. It is also possible it will do the same with AST SpaceMobile’s Bluebird satellites.

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Northrop Grumman lost $71 million from its bottom line because of its solid-fueled booster failures

9:00 am

In its most recent financial statement, Northrop Grumman admitted it took a $71 million charge due to nozzle failures on two of its solid-fueled boosters, dubbed GEM 63XL, during two different launches of ULA’s Vulcan rocket.

In a statement about its first-quarter financial results, the company said its Space Systems division recorded a $71 million “unfavorable adjustment” to earnings at completion on its GEM 63XL booster “associated with a launch anomaly that occurred during the first quarter.”

The GEM 63XL solid-fuel booster is used on United Launch Alliance’s Vulcan Centaur rocket. On a Feb. 12 launch, one of four boosters shed debris about 65 seconds after liftoff. The “observation,” as ULA termed it initially, did not affect the success of the USSF-87 mission, placing its payload into its planned geosynchronous orbit.

ULA later called the incident a “significant performance anomaly” with the booster that it would investigate before returning Vulcan to flight. The vehicle has not launched since then.

A similar incidence took place during an earlier Vulcan launch, with the rocket’s core stage and the remaining undamaged boosters getting the payload into the proper orbit. The continuing problem however has now grounded Vulcan, though the military is considering using it for some small payload launches, without the GEM strap-on boosters.

As a result, the Pentagon has already shifted several launches from ULA to SpaceX, costing ULA a significant amount of revenue. In addition, Vulcan’s grounding will impact the launch of Amazon’s Leo internet constellation, which had a major contract with ULA to get its Leo satellites into orbit.

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Space Force shifts another ULA Vulcan launch to SpaceX

3:19 pm

Unexpected debris falling from rocket at about T-1:00
Nozzle failure during February 12, 2026 Vulcan launch

As expected, the Space Force has taken its next GPS satellite launch from ULA’s Vulcan rocket and given it to SpaceX’s Falcon 9.

The reason for the change is the repeated problems with the solid-fueled side boosters used on Vulcan and built by Northrop Grumman. The nozzles on two different launches failed. Though the rocket’s core stage in both cases was able compensate and get the payload into the proper orbit, the Space Force decided in late February to suspend further launches on Vulcan until ULA gets the problem fixed and proves it by launching other commercial payloads.

The Space Force however is not yet reducing the number of launches it has purchased from ULA, merely delaying them.

If all goes to plan, the satellite — the 10th and final one in the GPS III line — will lift off no earlier than late April from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida [on a Falcon 9].

Vulcan Centaur, in return, will launch USSF-70, a national security mission that had been manifested on a SpaceX Falcon Heavy. USSF-70 will fly no earlier than summer 2028, according to Space Force officials.

Nonetheless, the situation is not good for ULA. This is the third such ULA launch the Space Force has shifted to SpaceX. At some point, if ULA doesn’t get the problem fixed the military it will be forced to reduce its reliance on Vulcan.

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NASA awards ULA’s Centaur-5 upper stage for future SLS launches

4:30 pm

NASA yesterday awarded ULA the contract for providing SLS its upper stage after the Artemis-3 mission using the Centaur-5 upper stage that was developed for the company’s Vulcan rocket.

In its procurement statement, NASA said its intention is to issue a sole source contract to ULA, meaning it’s the only upper stage being considered for this new iteration of the SLS rocket. An eight-page supporting document from NASA’s Marshall Space Flight Center (MSFC) in Huntsville, Alabama, was published to document the reasoning for its decision.

Among the stated reasons are the decades-long heritage of the RL10 engine, which has matured over time; the ability of the Centaur 5 to use the interfaces available on the Mobile Launcher 1 (ML1) along with the propulsion commodities of liquid oxygen and liquid hydrogen; and the experience of ULA’s teams working with NASA’s Exploration Ground Systems (EGS) at the Kennedy Space Center and elsewhere in the country.

They also noted that with the Centaur 3 upper stage achieving certification to launch humans as part of the Commercial Crew Program, there are a lot of common features with the Centaur 5.

The decision relieves NASA from wasting more money on the Mobile Launcher-2, which has been a disaster. The contractor Bechtel has gone over budget — from $383 million to $2.7 billion — and is so behind schedule it is still unclear now whether it will be ready by 2029, a decade after the contract was awarded.

It also relieves NASA of spending more money on its own upper stage, which has been as much a disaster, from Boeing.

Instead, this deal is an example of Isaacman doing the right thing. Rather than have NASA design and build its own upper stage, he is buying the product — almost literally off-the-shelf — from a commercial rocket company. He should expand this effort, and consider other private rockets, such as Falcon Heavy, to replace SLS itself.

Now Isaacman should consider suing Bechtel for fraud and incompetence, to try to get back some of the money it wasted.

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Space Force suspends use of ULA’s Vulcan rocket

9:36 am

Space Force officials yesterday made it official, that it has suspended all further military launches using ULA’s Vulcan rocket, due to the nozzle failure in one of the rocket’s solid-fueled strap-on boosters during the last launch on February 12, 2026.

The Space Force is pressing pause on all military launches on United Launch Alliance’s Vulcan rocket as officials investigate a recent anomaly they say could take “many months” to resolve.

That means launch plans for a GPS III satellite slated to fly on the brand new rocket next month are in flux, according to Col. Eric Zarybinsky, program executive officer for assured access to space. “I’m going to look for every flexibility I have to make sure that I can deliver warfighter capability as quickly as possible,” Zarybinsky told reporters at AFA’s Air Warfare Symposium here. “I’ve got a number of tools in my toolkit to do that, but until this anomaly is all over, we will not be launching National Security Space Launch missions on Vulcan.”

Though the rocket was able to get the payload to its proper orbit, despite the problem, this was the second Vulcan launch where a strap-on booster, built by Northrop Grumman, experienced a nozzle failure. In addition, another nozzle failure had occurred during a static fire test in 2025.

Prior to the February launch the Space Force had already shifted two launches from ULA’s Vulcan to SpaceX’s Falcon 9. At the moment ULA has seven military Vulcan launches scheduled for this year. Expect a considerable number to shift to SpaceX.

Blue Origin’s New Glenn rocket might also become an option, but the company must complete two more launches before the Space Force will certify it for national security launches. Considering that company’s slow pace in doing anything, it does not appear it will be able to take advantage of this situation.

ULA meanwhile had hoped to complete 18 to 22 launches in 2026, the majority using Vulcan. This decision by the Space Force likely means the company won’t complete more than five launches this year, most of which using its soon-to-be-retired Atlas-5 rocket.

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Four launches today with mostly positive results

10:15 am

This morning saw a string of launches from China, Russia, America, and Europe, with all four appearing to get their payloads into orbit though the American launch, by ULA’s Vulcan rocket, appeared to have a problem with one of its solid-fueled boosters.

First, a Chinese pseudo-company owned entirely by a Chinese government agency successfully placed seven satellites in orbit, its Smart Dragon-3 rocket (also called Jielong-3) lifting off from a platform off the coast of northeast China. Of the satellites, the prime payload was a Pakistani Earth observation satellite.

Though this launch was from a pseudo-company, I think I can safely say that the pause in launches by China’s so-called commercial market continues. Smart Dragon-3 was built by the China Aerospace Science and Technology Corporation (CASC), which while structured as a private company is owned and controlled by several agencies of the Chinese government.

Next, Russia successfully launched a new weather satellite, its Proton rocket launching from Baikonur in Kazakhstan. This was the first Proton launch in three years, a pause partly because Russia is in the process of retiring that rocket. The lower stages crashed in a range of spots in Kazakhstan and across southern Russia, just missing China in two places.

The American company ULA then followed with its first launch in 2026, its Vulcan rocket lifting off from Cape Canaveral in Florida and carrying two military satellites designed to track other satellite operations in high geosynchronous orbit.

Unexpected debris falling from rocket at about T-1:00
Unexpected debris falling from rocket at about T-1:00

While it appears the launch was able to get the satellites into their correct orbits, the Vulcan rocket had an issue during the launch. According to ULA, one of the rocket’s four solid-fueled boosters had a problem during its flight. More details can be found here, suggesting the booster, built by Northrop Grumman, might have had a been a failure of the booster’s nozzle, similar to the same burn-through that occurred on a booster during Vulcan’s second launch in 2024, and also occurred during a Northrop Grumman static fire test in 2025.

This issue is likely going to delay further Vulcan launches, and will likely make it impossible for ULA to meet its goal of launching 16 to 18 Vulcan missions this year. It will also raise hackles within the Pentagon, which certified Vulcan for military launches in 2025. That certification will likely be questioned, and possibly even pulled.

Finally, Arianespace sent 32 Leo satellites into orbit for Amazon, its Ariane-6 rocket lifting off from French Guiana. This was the first Ariane-6 launch in its most powerful variant, using four strap-on boosters.

Amazon has now launched 212 Leo satellites. Its FCC license however requires it to have 1,616 in orbit by July. The company has requested a waiver on that requirement, and is likely to get it, since it is now demonstrating that it is serious about launching the constellation.

The 2026 launch race:

16 SpaceX
8 China
2 Rocket Lab
2 Russia
1 ULA
1 Europe (Arianespace)

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ULA’s new management predicts it will achieve 18-22 launches in 2026

10:03 am

Before Tory Bruno resigned as CEO of the United Launch Alliance (ULA) to go work for Blue Origin, he had predicted in August last year that ULA was primed to complete two launches per month for the rest of ’25 and throughout ’26.

That prediction did not happen, as the company was only able to do four launches in the last five months of 2025, and no launches so far in 2026.

Yesterday the new management of ULA insisted that Bruno’s prediction was still reasonable, and that the company will complete between 18 to 22 launches before the end of this year.

Speaking during a virtual media roundtable on Feb. 10, Gary Wentz, ULA’s vice president of Atlas and Vulcan Programs, said the company aims to launch two to four Atlas 5 missions and 16 to 18 Vulcan missions. He said the Vulcan rockets will be split between pad 41 at Cape Canaveral Space Force Station and pad 3 at Vandenberg Space Force Base. “It’s a balance. We’re working with our customers to determine specific priorities and order of missions and in the case of Space Force and NRO (National Reconnaissance Office), to determine which missions they wan to get off with higher priority,” Wentz said. “And as we finalize that over the next about six to eight months out of the mission, then we’ll assign whether or not its going to be an Atlas mission or a Vulcan mission.”

John Elbon, the interim CEO following the departure of Tory Bruno in December, said that the company has a “strong commitment” from their commercial and government customers, citing a backlog of more than 80 missions.

That backlog is mostly split between ULA’s big contract to launch Amazon’s Leo satellites and a variety of different agencies in the Pentagon. Both are desperate to get their satellites into space, and it appears ULA is struggling to figure out how to do it. In its early years (from 2007 to 2016) the company was generally able to average about one launch a month, but since then that launch rate as been less than half that. To not only return to those launch rates from a decade ago but to almost double them will be challenging, to say the least.

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First Vulcan rocket arrives at Vandenberg for launch later this year

8:53 am

ULA has now delivered parts of a Vulcan rocket to Vandenberg Space Force Base in California as it prepares for that rocket’s first launch from that spaceport later this year.

ULA’s RocketShip recently docked at the harbor on the South Base with the Vulcan rocket components stowed inside the huge cargo vessel. … Crews spent several days offloading the hardware while mindful of tides that could have delayed the delivery.

…On the first day, workers removed the Vulcan’s Centaur upper stage from the RocketShip, followed by the booster the next day. “We tried to take off the payload adapter and the interstage adapter and, unfortunately, the swells were pretty bad,” Fortson said. After pausing the unloading chores for two days, the swells cooperated so the team didn’t have to wait for the next opportunity for suitable tides a couple of weeks away.

ULA hopes to get the launch off by June 2026, but that schedule will depend on whether the launchpad conversion from the Atlas-5 rocket can be completed. It also depends on whether the payload is ready on time. It appears this launch will be one of ULA’s seven national security launches for the Pentagon, though this is not confirmed.

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Amazon buys ten more launches from SpaceX to place its Leo satellites in orbit

10:59 am

Amazon Leo logo

Hidden in Amazon’s submission last week to the FCC, requesting more time to launch its Leo internet constellation, was this tidbit:

Less than two years after the Commission granted its authorization, Amazon Leo announced the largest commercial launch procurements in history to deploy its initial constellation. It has since added to this launch capacity, and today has contracted for 102 launches across four providers: 18 launches on Arianespace’s Ariane 6, 24 launches on Blue Origin’s New Glenn, 38 launches on ULA’s Vulcan Centaur, 9 launches on ULA’s Atlas V, and 13 launches on SpaceX’s Falcon 9. [emphasis mine]

The highlighted phrases indicate the significant changes. In my initial post last week I was focused solely on whether the FCC would grant Amazon the time extension to get its constellation in orbit. At the moment it has only 180 satellites operating in orbit, and to meet its license requirement it must have 1,616 launched by July.

Thus, I didn’t look closely at these launch contract numbers. While the number of launches for Arianespace (18) and ULA (47) appears to match Amazon’s contract numbers from its original 2022 announcement, Blue Origin’s total has dropped by three launches, 27 to 24.

SpaceX in turn has gained another ten launches, on top of its original already completed 2023 three-launch contract. (In 2023, faced with a stockholder lawsuit for ignoring SpaceX’s Falcon 9, the only operational rocket among all of these at the time and by far the cheapest, Amazon’s management quickly signed SpaceX to that three-launch contract.)

The submission last week tells us that sometime recently Amazon signed SpaceX to a new contract for ten more launches. The numbers also suggest that the company took three launches away from Blue Origin’s New Glenn. Apparently, Amazon is not happy with Blue Origin’s launch pace, and signed SpaceX to help get more satellites in orbit. Without question, SpaceX will get these ten additional launches off faster than ULA, Arianespace, or Blue Origin combined. In fact, I bet it gets all ten done before the middle of this year, assuming Amazon can deliver it the satellites.

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ULA loses another launch contract to SpaceX

9:09 am

The Space Force yesterday announced it has switched rocket companies for its next GPS satellite launch, taking the launch away from ULA and its Vulcan rocket and giving it to SpaceX.

SpaceX could launch the GPS III Space Vehicle 09 (SV09) within the next few weeks, as the satellite was entering the final stages of pre-flight preparations. As part of the swap, United Launch Alliance (ULA) will instead launch the third of the next generation of Global Positioning System satellites. The GPS III Follow-on (GPS IIIF) SV13 satellite was originally scheduled to launch on a Falcon Heavy, but will now fly on Vulcan.

“SV09 and SV13 were traded between ULA and SpaceX to get capability to orbit as soon as possible, for the same reason as the prior swap, which resulted in the last GPS launch in May 2025,” the spokesperson said in a statement. “The trade results in an overall net cost savings to the government and again demonstrates our sustained commitment to moving at speed to deliver combat-credible capabilities on orbit to meet warfighter needs.”

While at first glance it appears ULA has lost nothing, the military’s decision here bodes ill for the company. First, it indicates ULA has been unable to get Vulcan ready on time, forcing the Space Force to look to someone who could.

Second, this is the second time the Pentagon has taken a launch from ULA for these reasons. Increasingly it appears the military is losing patience with ULA’s inability to launch on time. For example, in awarding its most recent set of nine launches, it gave them all to SpaceX, bypassing ULA entirely.

In the past the Space Force tolerated ULA’s delays and high launch cost in order to guarantee the military had more than one launch provider. It now appears it is placing more importance on reliability and cost savings. And as I say, this bodes ill for ULA, which has not done a good job of providing either.

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Space Force awards nine launch contracts to SpaceX

1:03 pm

In announcing its next round of satellite launch awards, the Space Force’s Space Systems Command (SSC) has awarded all nine launches (valued at $739 millon total) to SpaceX, bypassing both Blue Origin and ULA.

SSC awarded the [three] SDA-2 missions to SpaceX for launches projected to begin in [the fourth quarter of fiscal year ’26], and awarded the [two] SDA-3 missions to SpaceX for launches to begin in [the third quarter of fiscal year ’27]. SSC also awarded the [four] NTO-5 launches to SpaceX projected to occur in [the first quarter of fiscal year ’27 and the second quarter of fiscal year ’28]. The total value of these awards is $739M.

It is surprising that SpaceX got all nine contracts. Even though SpaceX charges less than ULA, and Blue Origin’s New Glenn rocket is not yet certified by the Pentagon for operational launches, it has been military policy in recent years to distribute this work to more than one launch provider so as to guarantee a redundancy. ULA exists today for expressly that reason. In the past it would have certainly gotten at least one of these launches.

As for Blue Origin, the Space Force could have awarded it at least one of the later launches in ’27 and ’28, contingent on getting New Glenn certified.

That the Space Force bypassed both companies entirely speaks volumes. It appears it has decided to simply go with the best product now available, and to heck with redundancy.

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Lawsuit against Amazon for favoring Blue Origin over SpaceX to launch Kuiper satellites gets new hearing

8:01 am

The lawsuit originally filed in 2023 against Amazon because it favored other less reliable rockets, including Blue Origin’s forever-delayed New Glenn, instead of using SpaceX to launch its Kuiper constellation of satellites, got a new hearing yesterday after the suit was dismissed in February.

The suit is now being pursued a pension fund that apparently invested in the Kuiper constellation, and claims Jeff Bezos used his influence to convince Amazon to avoid using SpaceX when it signed launch contracts with ULA, Arianespace, and Blue Origin in 2022, even though none of those rockets were even operational at the time. Even now they appear unable to meet Amazon’s launch requirements.

Amazon has until 2026 to send up the first 1,600 satellites and three more years to launch the next batch. That broader backdrop barely came up during the appeal proceedings, which zoomed in on allegations that the board made no effort to oversee self-dealing by Bezos as he directed billions from Amazon to his own rocket company, Blue Origin, despite SpaceX’s superior capabilities.

Vivek Upadhya, counsel for the pension fund, stressed the “billions of dollars flowing directly from Amazon to a company owned and controlled by Amazon’s CEO and chairman.” The sheer scale of the conflict of interest made the Blue Origin contract “a truly exceptional transaction” requiring attentive board supervision, regardless of the actual role Bezos played in negotiations, according to Upadhya. “Delaware law doesn’t require that directors harbor some innate suspicion” before taking steps to manage conflicts, but the board “failed to lift a finger,” he said.

Following the filing of the 2023 lawsuit, Amazon signed SpaceX to a three-launch contract, which SpaceX has now completed. Meanwhile, only ULA has managed any of the other launches, three also. As for Arianespace and Blue Origin, it is not clear when either will begin doing any Kuiper launches.

It does appear Amazon’s board played favorites here, and did so in a way that was harmful to the company’s bottom line. Whether this can be proved to the satisfaction of the court however is very uncertain.

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Space Force awards SpaceX and ULA seven launches worth more than a billion dollars

3:05 pm

The U.S. Space Force (USSF) yesterday awarded multi-launch contracts to both SpaceX and ULA for seven launches beginning in 2027 worth more than a billion dollars.

SpaceX received $714 million for five launches and ULA was awarded $428 million for two launches, USSF said in an Oct. 3 news release.

The awards are part of the Space Force’s National Security Space Launch Program, which it uses to launch services for military space missions. In April, it chose SpaceX, ULA, and Blue Origin to launch a total of 54 missions scheduled between fiscal 2027 and 2032, with SpaceX responsible for just over half, with 28 launches. Individual missions will be awarded in batches through fiscal 2029.

Though Blue Origin was included in this program and its New Glenn rocket has finally launched once successfully, its not yet been certified to launch military satellites, and to get certified the company is going to have to launch at least one more time. That launch is expected before this month is out. Moreover, it will soon have to compete against more companies, and the Pentagon will be adding Rocket Lab and Stoke Space to its approved list as soon as both successfully launch their respective Neutron and Nova rockets by next year.

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Two launches today less than 20 minutes apart

6:06 pm

Arianespace and ULA both successfully completed launches today, less less than 20 minutes apart.

First Arianespace placed in orbit a new European weather satellite, its Ariane-6 lifting off from French Guiana in South America on its second commercial launch and third launch overall.

Next, ULA launched a Space Force national security classified payload, its Vulcan rocket lifting off from Cape Canaveral in Florida. This was the Vulcan’s third launch, and the first in 2025. It is also its first commercial launch, and the first since the military certified the rocket for its use. It was also the first since a nozzle fell off a strap-on booster during its last launch in October 2024. On this launch it used four boosters, all of which functioned as planned.

For Arianespace (and Europe) this was its fourth launch in 2025 so it does not make the leader board for the 2025 launch race. Similarly, this was ULA’s third this year, so it also does not make the leader board.

The leaders in the 2025 launch race:

98 SpaceX (with another Starlink launch scheduled for later today)
43 China
11 Rocket Lab
9 Russia

SpaceX still leads the rest of the world in successful launches, 98 to 76.

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ULA’s CEO provides update on Vulcan and the company’s launch plans

9:03 am

Link here. ULA’s CEO Tory Bruno outlined the overall state of the company’s launch plans, including its goal of ramping up the launch rate by the end of this year to what Bruno had hoped to achieve at this start of 2025.

ULA anticipates a robust schedule, aiming for about two launches per month across its Atlas and Vulcan fleets in 2025 and 2026, “unless something interesting happens.”Bruno expressed confidence in achieving nine launches this year, bolstered by the completion of a new Vertical Integration Facility (VIF) and Mobile Launch Platform (MLP), enabling parallel rocket assembly.

In December 2024 Bruno had predicted the company would complete 20 launches in 2025. Right now it has only completed two launches (one each for Vulcan and Atlas-5). Getting up to 9 launches by the end of this year will require it to go from one launch every four months to two launches per month, and do so immediately. In its entire history the company has never come close to achieving that launch pace. The best it ever did was 16 launches in 2009.

That pace will also rely on Blue Origin delivering enough BE-4 engines for Vulcan’s first stage. According to Bruno, Blue Origin is now getting it done, and “might be an engine or two ahead.”

Much more at the link.

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ULA finally begins stacking Vulcan for next launch

9:05 am

After months of delay following the nozzle failure on the rocket’s second launch, ULA has now finally begun preparing a new Vulcan rocket for its third launch, carrying a number of a classified NSSL national security payloads.

Based on statements by ULA’s CEO, Tory Bruno, the company is finally about to begin the aggressive 2025 launch schedule he had promised last year.

During a media roundtable on the sidelines of the 40th Space Symposium in early April, Bruno said they planned to launch around 11 to 13 times by the end of the year. He said that would be a roughly 50-50 split between Atlas and Vulcan rockets.

The next two Vulcan launches are planned to be two NSSL Phase 2 missions: USSF-106 and USSF-87. The Vulcan rockets for both have been at the Cape since last year, but the status of the payloads hasn’t been publicly discussed given their ties to national security.

Bruno said following those two NSSL missions, ULA will launch the first Kuiper Vulcan mission and then bounce back and forth between Atlas and Vulcan flights through the end of the year.

If this schedule turns out to be true, it will be good news not only for ULA but for Amazon, as it indicates the possibility of ULA launching more than 500 Kuiper satellites before the end of the year. That will make a significant dent in its requirement to place 1,600 satellites in orbit by July 2026. At the moment only 54 are in space.

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Speculation on future New Glenn launch schedule

9:26 am

According to anonymous sources at Blue Origin, the company has now delayed the second launch of its New Glenn rocket to September, ten months after its first launch in January 2025, and hopes to quickly follow with three more launches by the middle of 2026.

The September launch will launch NASA’s two smallsat Escapade Mars orbiters.

After Escapade, Blue Origin has several missions tentatively plotted out. However, sources cautioned that the manifest could be moved around due to the readiness of subsequent New Glenn vehicles and their payloads. Based upon information received by Ars, the launch manifest could look something like this:

  • New Glenn 2: ESCAPADE (fall 2025)
  • New Glenn 3: Firefly’s Elytra orbital transfer vehicle (end of 2025, early 2026)
  • New Glenn 4: Blue Moon MK1 lander (first half of 2026)
  • New Glenn 5: First batch of 49 Amazon Project Kuiper satellites (mid-2026)

Whether this schedule will occur as speculated is unknown. Blue Origin’s long term track record — slow and timid — suggests it is very unlikely. And even if it does fly as planned, it suggests strongly that Amazon is not going to meet its FCC license requirement to have 1,600 Kuiper satellites in orbit by July 2026. So far Amazon has only placed 54 operational Kuiper satellites into orbit, on two Atlas-5 launches. It has contracts to launch these satellites 46 times on ULA rockets (8 on Atlas-5 and 36 on Vulcan), 27 times on Blue Origin’s New Glenn, 18 times on ArianeGroup’s Ariane-6, and 3 times on SpaceX’s Falcon-9.

Except for the Falcon 9, none of the other rockets have begun flying with any frequency. Vulcan has only launched twice, New Glenn once, and Ariane-6 twice. All three have been extremely slow to ramp up operations, with months passing between each launch. To meet Amazon’s FCC license requirements, they will have to achieve between 35 to 60 launches in the next twelve months, a pace of three to six launches per month. At this point none of these companies appear capable of even coming close to doing this.

Nor does Amazon have the option to switch these launches to the Falcon 9. SpaceX would certainly accept the business, but the manifest for the Falcon 9 is presently very full. It is doubtful it could do more than double or triple its commitment to Amazon.

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Nozzle blows off of Northrop Grumman SLS solid rocket booster during static fire test

1:05 pm

During a static fire test of a new upgraded strap-on solid-fueled booster to be used on the second version of NASA’s SLS rocket, it appears the nozzle broke off near the end of the test.

I have embedded the video below.

This failure is not good for getting the upgraded version of SLS built, dubbed Block 2. Block 1 has flown once unmanned, and is planned for the next two manned missions. Block 2 would be for further manned missions beyond that. The Trump administration has proposed cancelling it, ending SLS after those two Block 1 flights. Senator Ted Cruz (R-Texas) has instead introduced a bill that would save it in order to fly two Block 2 SLS manned missions.

This failure is definitely going to delay and add cost to Block 2 development, a program that is already over budget many times over and a decade-plus behind schedule. These additional delays and cost overruns are not going to help it politically. It justifies the Trump administration’s desire to cancel it.

Moreover, this nozzle failure suggests a very fundamental design problem. Northrop Grumman, which built and was testing this booster, also builds the solid-fueled strap-on boosters used on ULA’s Vulcan rocket, which had a similar nozzle failure during Vulcan’s second launch in October last year. Both Northrop Grumman and ULA have said they had identified and fixed the cause of that failure, and the military has certified it for operational launches, but nonetheless Vulcan still remains sidelined, more than eight months later.

I suspect ULA is going to have to do more testing of the Northrop Grumman Vulcan side boosters before its next Vulcan launch, delaying that rocket further.
» Read more

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SpaceX launches GPS satellite for military

10:51 am

SpaceX this morning successfully placed a military GPS satellite into orbit, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its fourth flight, landing on a drone ship in the Atlantic. As of posting the satellite has not yet been deployed.

This was the second military GPS launch that the Space Force has taken from ULA and its Vulcan rocket and given to SpaceX instead. Even though Vulcan was certified in late March by the military for these kinds of military launches, delays in getting Vulcan operational forced the Space Force to find another more reliable launch provider. Even now, two months after that certification, ULA has still not announced a launch schedule for this rocket. The company in December 2024 had predicted it would launch 20 times in 2025, with 16 of those launches being by Vulcan. The year is almost half over now and ULA has only launched once, using an Atlas 5 rocket.

The leaders in the 2025 launch race:

66 SpaceX
32 China
6 Rocket Lab
6 Russia

SpaceX now leads the rest of the world in successful launches, 66 to 51.

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Pentagon official blasts ULA’s slow Vulcan launch pace to Congress

10:00 am

In written testimony to Congress submitted on May 14, 2025, the acting assistant secretary of the Air Force for Space Acquisition and Integration, Major General Stephen Purdy, blasted ULA’s very slow effort to get its new Vulcan rocket operational, causing launch delays for four different military payloads.

“The ULA Vulcan program has performed unsatisfactorily this past year,” Purdy said in written testimony during a May 14 hearing before the House Armed Services Committee’s Subcommittee on Strategic Forces. This portion of his testimony did not come up during the hearing, and it has not been reported publicly to date. “Major issues with the Vulcan have overshadowed its successful certification resulting in delays to the launch of four national security missions,” Purdy wrote. “Despite the retirement of highly successful Atlas and Delta launch vehicles, the transition to Vulcan has been slow and continues to impact the completion of Space Force mission objectives.”

The full written testimony [pdf] is worth reading, because Purdy outlines in great detail the Pentagon’s now full acceptance of the capitalism model. It appears to be trying in all cases to streamline and simplify its contracting system so as to more quickly issue contracts to startups, which were not interested previously in working with the military because they could not afford the long delays between proposal acceptance and the first payments.

In the last decade it appears this process is having some success, resulting for example in the space field the launch of multiple hypersonic tests by a variety of rocket startups. Purdy’s written testimony outlines numerous other examples.

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