Tag: mobile launcher

GAO: Next SLS Artemis launches will almost certainly be delayed

10:52 am

SLS's two mobile launchers, costing $1 billion
NASA’s bloated SLS mobile launchers

According to a new Government Accountability Office (GAO) report released yesterday, NASA’S continuing delays and technical problems building the various ground systems required for the next few Artemis launches will almost certainly cause those launches to be delayed.

The schedule at present is as follows:

  • September 2025: Artemis-2 will be the program’s first manned mission, taking four astranauts around the Moon.
  • September 2026: Artemis-3 will complete the first manned lunar landing.
  • September 2028: Artemis-4 will send four astronauts to the Lunar Gateway station in orbit around the Moon, and then complete the second manned lunar landing.

The GAO report notes at length that modifications to the mobile launch platform SLS will use on the first two missions is taking longer than planned. It also notes that the problems completing the second mobile launcher continue, with the budget growing from $383 million to $1.1 billion, and the work years behind schedule with no certainty it will be completed in time for the 2028 mission. These issues are the same ones noted by NASA’s inspector general in August 2024.

Orion's damage heat shield
Damage to Orion heat shield caused during re-entry,
including “cavities resulting from the loss of large chunks”

This report focused exclusively on the scheduling delays for the ground systems that will be used by SLS for each launch. It did not address the serious questions that remain concerning the serious heat shield damage experienced by the Orion capsule when it returned to Earth on its first unmanned mission in late 2022. NASA has been studying that problem now for two years, and as yet has not revealed a solution.

I continue to predict that the first manned landing, now scheduled for 2026, will not occur before 2030, six years behind the schedule first proposed by President Trump but actually fifteen years behind the schedule initially proposed by President George Bush Jr in 2004. All in all, it will take NASA almost a third of a century to put American astronauts back on the Moon, assuming the landing occurs in 2030 as I now predict. Compare that with the development time of SpaceX’s Starship/Superheavy. Proposed in 2017, it is already flying, and will almost certainly complete its first private manned lunar mission and its first test missions to Mars by 2027. The contrast is striking.

More and more the entire part of Artemis run by NASA is proving to be the failed disaster I predicted it would be in 2011. No wonder former New York mayor Michael Bloomberg wrote an op-ed yesterday calling for its cancellation. Like most politicians, reality is finally percolating into his thick skull, though several decades late.

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NASA IG: NASA’s effort to build new SLS mobile launcher is an epic disaster

12:20 pm

SLS's two mobile launchers, costing $1 billion
NASA’s bloated SLS mobile launchers

According to a new report [pdf] from NASA’s inspector general, both NASA and its contractor Bechtel have allowed the cost and schedule for the new larger SLS mobile launcher (ML-2) (on the right in the graphic) to go completely out of control, with the first launch on that platform to be delayed again until 2029.

NASA projects the ML-2 will cost over three times more than planned. In 2019, NASA estimated the entire ML-2 project from design through construction would cost under $500 million with construction completed and the ML-2 delivered to NASA by March 2023. In December 2023, NASA estimated the ML-2 project would cost $1.5 billion, including $1.3 billion for the Bechtel contract and $168 million for other project costs, with delivery of the launcher to NASA in November 2026. In June 2024, NASA established the Agency Baseline Commitment (ABC)—the cost and schedule baseline committed to Congress against which a project is measured—for a ML-2 project cost of $1.8 billion and a delivery date of September 2027. Even with the establishment of the ABC, NASA intends to keep Bechtel accountable to the cost and schedule agreed to in December 2023.

Despite the Agency’s increased cost projections, our analysis indicates costs could be even higher due in part to the significant amount of construction work that remains. Specifically, our projections indicate the total cost could reach $2.7 billion by the time Bechtel delivers the ML-2 to NASA. With the time NASA requires after delivery to prepare the launcher, we project the ML-2 will not be ready to support a launch until spring 2029, surpassing the planned September2028 Artemis IV launch date.

This quote actually makes things sounder better than they are. Bechtel’s original contract was for $383 million, which means the IG’s present final estimate of $2.7 billion is more than seven times higher. The contract was awarded in 2019 and was supposed to be completed by 2023, in four years. Instead, at best it will take Bechtel a decade to complete the job.

The IG notes that this contact was cost-plus, and considers this the main cause of these cost overruns. It also notes that NASA has had the option to convert the contract to fixed-price, but has chosen not to do so.

Possibly the most damning aspect of the IG report is its conclusion, which essentially admits that nothing can be done to fix this problem.
» Read more

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The first SLS mobile launcher is leaning

8:49 am

Though NASA says it is not a problem, they have now revealed that the very expensive mobile launcher to be used for the first unmanned SLS launch in 2019, is leaning slightly.

The notes spoke of engineers being concerned about a lean towards the North – which would be towards the rocket when mated – with the angle of the leaning claimed to be seen as increasing when the Vertical Stabilizer porch was installed. It was also claimed the ML Tower is twisting and this issue increased when the porch was installed. This was cited as the reason additional arm installations onto the Tower were placed on hold, until the leaning-twisting issue is understood. Next in line for installation are the ICPS (Interim Cryogenic Propulsion Stage) Umbilical Arm, the Crew Access Arm and the two Vehicle Stabilizer Arms.

NASASpaceFlight.com’s Philip Sloss took the concerns to NASA to ask for clarifications. NASA responded, saying “the ML leaning/bending was not the cause of the delay in the install of the Crew access arm. These are unrelated.” However, they did expand on the specific issue, mainly to note it is understood and does not currently require any additional mitigation or modification to the ML.

“NASA’s mobile launcher is structurally sound, built to specifications, and does not require a design change or modifications. As expected, the mobile launcher is not perfectly still,” a NASA spokesperson added.

Note that this mobile launcher is not compatible with the second SLS launch, which would be the first manned flight in 2023. NASA will either have to modify it significantly at great costs, or build another, discarding this launcher after only one use.

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NASA wants to use its SLS mobile launch once, then replace it

9:06 am

Government in action! After spending almost a half billion to reconfigure the Apollo mobile launcher first for Ares and then for SLS, NASA now says it needs to build a completely new mobile launcher to replace it.

Apparently, all the work did not make the mobile launcher usable for the larger SLS that will launch astronauts.

According to Hambleton, NASA has made no decision on a second mobile launcher. She declined to address the question of costs. A 2012 report from NASA’s inspector general estimated the costs of building a new mobile launcher then at $122 million, but a new structure expressly for the larger Block 1B rocket to be used for the second flight of the SLS rocket would almost certainly cost more.

Additionally, If NASA builds a new mobile launcher, the modified one now being configured for the first SLS flight would likely be used just once—a waste of infrastructure that cost perhaps half a billion dollars and more than a decade of development.

The absurdity of this is appalling. They spent a decade and half a billion reconfiguring the mobile launcher, under the guise that reusing the old one saved NASA money. Now they want to build a new one?

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