ULA now targets May 4th for first Vulcan launch
According to ULA’s CEO, the company has now scheduled the first launch of its Vulcan rocket for May 4, 2023, a delay of about a month from the previous schedule.
The delay to the new date was caused by a variety of factors. First, the launch window for the prime payload, Astrobotic’s Peregrine lunar lander, is only open certain days of the month. Second, that lander is just finishing final testing, and the extra time was needed to get it to Cape Canaveral and stacked on the rocket. Third, the extra time was needed to complete all the dress rehearsal countdown tests prior to launch. However, the biggest reason for the delay appears to have been one of Blue Origin’s BE-4 rocket engines.
ULA and Blue Origin are finishing the formal qualification of the BE-4 engine, which Bruno described as the “pacing item” for the launch. “It’s taking a little bit longer than anticipated.”
He revealed that, in a qualification test of one of two engines, the liquid oxygen pump had about 5% higher performance than expected or seen on other engines. “When the performance of your hardware has even a small shift that you didn’t expect, sometimes that is telling us that there could be something else going on in the system that is potentially of greater concern.”
ULA and Blue Origin decided to take the engine off the test stand and disassemble it. Engineers concluded that the higher performance was just “unit-to-unit variation” and not a problem with the engine itself, Bruno said.
If Blue Origin was manufacturing and testing these engines as it needs to do, in large numbers, it would have known a long time ago the range of “unit-to-unit variation” in performance. That this is not known at this late time once again tells us that the company is still struggling to build these engines routinely. Yet it will soon need to produce plenty in short order in order to sustain not only ULA’s Vulcan launch schedule but the launch schedule of its own New Glenn rocket.
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According to ULA’s CEO, the company has now scheduled the first launch of its Vulcan rocket for May 4, 2023, a delay of about a month from the previous schedule.
The delay to the new date was caused by a variety of factors. First, the launch window for the prime payload, Astrobotic’s Peregrine lunar lander, is only open certain days of the month. Second, that lander is just finishing final testing, and the extra time was needed to get it to Cape Canaveral and stacked on the rocket. Third, the extra time was needed to complete all the dress rehearsal countdown tests prior to launch. However, the biggest reason for the delay appears to have been one of Blue Origin’s BE-4 rocket engines.
ULA and Blue Origin are finishing the formal qualification of the BE-4 engine, which Bruno described as the “pacing item” for the launch. “It’s taking a little bit longer than anticipated.”
He revealed that, in a qualification test of one of two engines, the liquid oxygen pump had about 5% higher performance than expected or seen on other engines. “When the performance of your hardware has even a small shift that you didn’t expect, sometimes that is telling us that there could be something else going on in the system that is potentially of greater concern.”
ULA and Blue Origin decided to take the engine off the test stand and disassemble it. Engineers concluded that the higher performance was just “unit-to-unit variation” and not a problem with the engine itself, Bruno said.
If Blue Origin was manufacturing and testing these engines as it needs to do, in large numbers, it would have known a long time ago the range of “unit-to-unit variation” in performance. That this is not known at this late time once again tells us that the company is still struggling to build these engines routinely. Yet it will soon need to produce plenty in short order in order to sustain not only ULA’s Vulcan launch schedule but the launch schedule of its own New Glenn rocket.
Readers!
Every February I run a fund-raising drive during my birthday month. This year I celebrate my 72nd birthday, and hope and plan to continue writing and posting on Behind the Black for as long as I am able.
I hope my readers will support this effort. As I did in my November fund-raising drive, I am offering autographed copies of my books for large donations. Donate $250 and you can have a choice of the hardback of either Genesis: the Story of Apollo 8 or Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space. Donate $200 and you can get an autographed paperback copy of either.
Please consider supporting my work here at Behind the Black. My analysis of space, politics, and culture, taken from the perspective of an historian, is almost always on the money and ahead of the game. For example, in 2020 I correctly predicted that the COVID panic was unnecessary, that the virus was apparently simply a variation of the flu, that masks were not simply pointless but if worn incorrectly were a health threat, that the lockdowns were a disaster and did nothing to stop the spread of COVID. Every one of those 2020 conclusions has turned out right.
Your help allows me to do this kind of intelligent analysis. I take no advertising or sponsors, so my reporting isn't influenced by donations by established space or drug companies. Instead, I rely entirely on donations and subscriptions from my readers, which gives me the freedom to write what I think, unencumbered by outside influences.
You can support me either by giving a one-time contribution or a regular subscription. There are four ways of doing so:
1. Zelle: This is the only internet method that charges no fees. All you have to do is use the Zelle link at your internet bank and give my name and email address (zimmerman at nasw dot org). What you donate is what I get.
2. Patreon: Go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
3. A Paypal Donation or subscription:
4. Donate by check, payable to Robert Zimmerman and mailed to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
You can also support me by buying one of my books, as noted in the boxes interspersed throughout the webpage or shown in the menu above.
Has anyone in the aerospace press been allowed to tour the BO engine production facility? The Soviet-style secrecy of this company is probably covering up a fair amount of incompetence going on, and if Mr. Bruno was honest, he probably regrets hitching his wagon to that company.
I would not buy a rocket engine from Bezos’s operation. The guy is too thick to copy an obviously better way of doing business.