Prep of first SLS rocket continues to suggest no launch in ’21
Though NASA and Boeing crews and management have been striving very hard to get the SLS rocket on the launchpad for a liftoff before the end of this year, the schedule has as expected continued to slip, with the chances of a launch by December now increasingly unlikely.
NASA engineers have not discovered any major problems during the SLS testing, but key milestones leading up to the Artemis 1 launch have been steadily sliding to the right in NASA’s processing schedule.
Before NASA raised the Boeing-made SLS core stage onto its mobile launch platform inside High Bay 3 of the VAB in June, managers hoped to connect he Orion spacecraft for the Artemis 1 mission on top of the rocket in August. That’s now expected this fall.
The first rollout of the 322-foot-tall (98-meter) rocket from the VAB to launch pad 39B was scheduled no earlier than September. That’s now expected in late November, at the soonest, according to [Cliff Lanham, senior vehicle operations manager for NASA’s exploration ground systems program].
The schedule slips, while not significant amid the history of SLS program delays, have put a major crunch on NASA’s ambition to launch the Artemis 1 mission this year. The agency is evaluating Artemis 1 launch opportunities in the second half of December, multiple sources said, but that would require NASA to cut in half the time it originally allotted between the SLS fueling test and the actual launch date.
None of this is really a surprise. NASA had always said it would take about six to ten months to get the rocket ready for launch once it arrived in Florida, and it only got there in May. That meant a late November launch could only occur if everything went perfectly. As this is the first time this rocket has ever been assembled, it is not reasonable to expect such perfection.
Based on all factors, the launch will likely occur no earlier than January, but more likely in February, at the earliest. On that schedule it is very likely SpaceX’s Starship will reach orbit first.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Though NASA and Boeing crews and management have been striving very hard to get the SLS rocket on the launchpad for a liftoff before the end of this year, the schedule has as expected continued to slip, with the chances of a launch by December now increasingly unlikely.
NASA engineers have not discovered any major problems during the SLS testing, but key milestones leading up to the Artemis 1 launch have been steadily sliding to the right in NASA’s processing schedule.
Before NASA raised the Boeing-made SLS core stage onto its mobile launch platform inside High Bay 3 of the VAB in June, managers hoped to connect he Orion spacecraft for the Artemis 1 mission on top of the rocket in August. That’s now expected this fall.
The first rollout of the 322-foot-tall (98-meter) rocket from the VAB to launch pad 39B was scheduled no earlier than September. That’s now expected in late November, at the soonest, according to [Cliff Lanham, senior vehicle operations manager for NASA’s exploration ground systems program].
The schedule slips, while not significant amid the history of SLS program delays, have put a major crunch on NASA’s ambition to launch the Artemis 1 mission this year. The agency is evaluating Artemis 1 launch opportunities in the second half of December, multiple sources said, but that would require NASA to cut in half the time it originally allotted between the SLS fueling test and the actual launch date.
None of this is really a surprise. NASA had always said it would take about six to ten months to get the rocket ready for launch once it arrived in Florida, and it only got there in May. That meant a late November launch could only occur if everything went perfectly. As this is the first time this rocket has ever been assembled, it is not reasonable to expect such perfection.
Based on all factors, the launch will likely occur no earlier than January, but more likely in February, at the earliest. On that schedule it is very likely SpaceX’s Starship will reach orbit first.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Hang up with Orion then?
From my understanding there is also another time-sensitive aspect with the SLS’s solid rocket boosters. Those can only be left stacked for so long before they have to be taken apart and re-packed. Yet another ticking clock.
FAA will do its best to make Starship delayed into 2022. Have yet to issue required for flight initial report. Then there’s a period for public comment. Then final report issued. Likely remediations required which will also take time.
https://www.faa.gov/newsroom/faa-begin-environmental-review-spacex-texas-launch-site
“The EA will allow the FAA to determine the appropriate course of action: preparation of an EIS because the proposed action’s environmental impacts would be significant; issuance of a Finding of No Significant Impact (FONSI); or issuance of a “Mitigated FONSI” providing for mitigation measures to address the proposed action’s environmental impacts. The FAA may make its determination during the EA process or after SpaceX presents a draft EA for FAA approval.
To receive the licenses, SpaceX must complete a safety review and develop agreements for the license application in addition to the environmental review. “
Okay, I looked it up and the seals between the SRB segments are rated for a year after stacking. They started stacking the SRBs in January of 2021. Any bets if they’ll actually launch before January 2022?
So if the seals in the SRBs fail that can’t cause any serious problem can it? They should get an opinion from Joe Biden’s staff just to be sure, when they have a chance after reviewing SpaceX’s EIS.
The SRB issue has been brought up several times before. The staggered the stacking a bit, so the full weight wasn’t on the lower rings right to start, and as I recall, that put the one year date out into March or April. And of course they could always issue a waiver if its close, but if it starts slipping to June, then they probably need to restack with new boosters, which would be a disaster.
NASA’s legacy sucks! If this current do-nothing mind-set was in place in the 1950’s, we’d still be waiting to get a Mercury capsule in space.
“And of course they could always issue a waiver”
What I don’t like is the the sense of things being driven by an artificial deadline. We had this once before and it resulted in the loss of the spacecraft, do we really want to go through that again?
I’ve read that NASA has long been willing to certify the SRB’s up to 15 months from stacking. Which would sync with what David Eastman says.
Still, if Eric Berger’s source is to be believed (see his story at Ars Technica from a few days ago), even that may be a push. They’re on the clock, and they’ve only got limited margin to play with.
It is unmanned-so they can chance it. The Greens will kill all rocketry if given the chance.
Robert and I may not agree on much-and while I do support DoE…the EPA needs abolishing. I heard it said that most of American concrete was laid down in FDR’s watch. Today’ eco-dems and libertarians would form a Stalin-Hitler pact against him. Only civil engineers should hold office or get MBAs.
Now it looks like MAF took a hit. Branson’s flight had a red light…and I think I know what to call China’s leader-a crook who is at least pro-space…he’s their Spiro T. Agnew
Jeff Wright, would you kindly clarify what MAF is?
Michoud Assembly Fac’…IIRC