SLS launch now definitely delayed until July, at the earliest
NASA yesterday admitted that with the decision to return SLS to the vehicle assembly building (VAB) before completing its dress rehearsal countdown, it is now impossible to launch SLS in the June launch window as planned, and that the earliest the rocket could launch would be July.
This summary of the issues that dogged the rocket during the three attempts to complete that dress rehearsal illustrates the likelihood that SLS has many engineering loose ends still unresolved:
On April 3 it was malfunctioning fans on the Mobile Launcher needed to clear hazardous fumes. On April 4, it was a defective helium check valve on the Interim Cryogenic Propulsion Stage, ICPS, the Space Launch System’s second stage. On April 14, it was a hydrogen leak on the SLS first stage, or Core Stage.
Once again, having such problems during the first countdown of a new rocket is not unusual. What is questionable is only finding them now, at the very end of the rocket’s development.
I predict the launch will be further delayed until the fall, at which time NASA might face a much more serious issue regarding SLS’s two strap-on solid rocket boosters. During the shuttle era NASA had always placed a one year limit on their use once they were stacked, because it was believed that standing in a vertical position for too long could warp and distort the solid rocket fuel, thus causing it to burn improperly during launch.
These boosters were first stacked near the end of 2020, so their use-by date should have been January 2022, at the latest. Not launching until the fall will place them nine to eleven months past that date. And since these boosters are taller than the one’s used by the shuttle, they are heavier which makes extending that lifespan even riskier.
Thus, if NASA decides it must replace the boosters, that will likely delay the launch another three to six months, pushing it into ’23 at the earliest. If NASA decides to go with these boosters, it poses a real risk of failure during launch, a failure that will certainly destroy the rocket.
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
NASA yesterday admitted that with the decision to return SLS to the vehicle assembly building (VAB) before completing its dress rehearsal countdown, it is now impossible to launch SLS in the June launch window as planned, and that the earliest the rocket could launch would be July.
This summary of the issues that dogged the rocket during the three attempts to complete that dress rehearsal illustrates the likelihood that SLS has many engineering loose ends still unresolved:
On April 3 it was malfunctioning fans on the Mobile Launcher needed to clear hazardous fumes. On April 4, it was a defective helium check valve on the Interim Cryogenic Propulsion Stage, ICPS, the Space Launch System’s second stage. On April 14, it was a hydrogen leak on the SLS first stage, or Core Stage.
Once again, having such problems during the first countdown of a new rocket is not unusual. What is questionable is only finding them now, at the very end of the rocket’s development.
I predict the launch will be further delayed until the fall, at which time NASA might face a much more serious issue regarding SLS’s two strap-on solid rocket boosters. During the shuttle era NASA had always placed a one year limit on their use once they were stacked, because it was believed that standing in a vertical position for too long could warp and distort the solid rocket fuel, thus causing it to burn improperly during launch.
These boosters were first stacked near the end of 2020, so their use-by date should have been January 2022, at the latest. Not launching until the fall will place them nine to eleven months past that date. And since these boosters are taller than the one’s used by the shuttle, they are heavier which makes extending that lifespan even riskier.
Thus, if NASA decides it must replace the boosters, that will likely delay the launch another three to six months, pushing it into ’23 at the earliest. If NASA decides to go with these boosters, it poses a real risk of failure during launch, a failure that will certainly destroy the rocket.
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
SLS, the gift that keeps on giving
Hmm, I guess the Starship FAA review iwll have to be delayed again and again, so that SLS can launch first… Political interference? Nah, never!
“The gift that keeps on giving”
Isn’t that the definition of “contract-plus”?
I wonder what launch insurance would cost? https://axaxl.com/insurance/products/space-insurance
Divide by zero error.
I wonder if SLS is being sabotaged until Starship flies to orbit at this point,
“””Jeff Wright
April 19, 2022 at 10:30 pm
I wonder if SLS is being sabotaged until Starship flies to orbit at this point,”””
There’s no need for outsiders to sabotage SLS when it’s doing such a fine job of it on its’ own.
If we had to wait for these foot dragging imbeciles Russia would be colonizing the Moon then going onto Mars
The first folks/companies to get into space get to create the new solar system economy. It will quickly become far larger than Earth’s.
A lot of people controlling Earth’s economic systems and financial resources are probably terrified by the thought they will become like peasants.
Earth may be Origin, but soon it will just be an ignorable annoyance.