Author Topic: Blue Origin's BE-4 Engine  (Read 874339 times)

Offline trimeta

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Re: Blue Origin's BE-4 Engine
« Reply #1940 on: 10/01/2022 01:51 am »
As usual, excellent observations by Harry:

twitter.com/harry__stranger/status/1575111924802416642

Quote
Satellite imagery shows that Blue Origin fired a BE-4 engine sometime between the 22nd and 24th of September.

This is almost one month after the last sign of a firing, which occurred between the 26th and 27th of August.
It says something about BE-4 development that you can keep track of test firings with a calendar.  With at least one competitor, you need a stopwatch.
In fact, a calendar which only lets you write one entry per month would be sufficient...

Offline harrystranger

Re: Blue Origin's BE-4 Engine
« Reply #1941 on: 10/02/2022 02:19 pm »
It can be really hard to interpret satellite imagery! Local knowledge & an understanding of an area’s history are crucial pieces of the puzzle.
- Rob Simmon

Offline Vahe231991

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Re: Blue Origin's BE-4 Engine
« Reply #1942 on: 10/02/2022 02:37 pm »
Signs of possibly another test
https://twitter.com/Harry__Stranger/status/1576563722708914178
It's hard to say for sure whether the BE-4 shown in this satellite image is the FE-1 or FE-2.

Offline Robert_the_Doll

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Re: Blue Origin's BE-4 Engine
« Reply #1943 on: 10/03/2022 12:26 am »
Fortunately, we do indeed now have a high-resolution overview of FE-2's test firing to compare the plume interaction dynamics with that of the satellite imagery:

« Last Edit: 10/03/2022 12:44 am by Robert_the_Doll »

Offline Starshipdown

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Re: Blue Origin's BE-4 Engine
« Reply #1944 on: 10/03/2022 02:47 pm »
It's hard to say for sure whether the BE-4 shown in this satellite image is the FE-1 or FE-2.

As has been pointed out before, it may be neither engine. We could be looking at the test firing of one of the qual engines since XEEx can handle two engines at the same time, and we know that they've done at least 3 firings in a single week.

And that's something Harry should keep an eye for is evening and very early morning test firings, not just for daytime ones.

Online whitelancer64

Re: Blue Origin's BE-4 Engine
« Reply #1945 on: 10/09/2022 01:33 am »
@blueorigin
Our @ULAlaunch teammates came to West Texas to check out their first new flight engine: Two thumbs up! Now it’s off to ULA!

https://twitter.com/blueorigin/status/1578907437033492480
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Online Vettedrmr

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Re: Blue Origin's BE-4 Engine
« Reply #1946 on: 10/09/2022 01:42 am »
Outstanding!  Now ULA can get started on integrating this engine (FE-2?) while the other goes through its acceptance tests.
Aviation/space enthusiast, retired control system SW engineer, doesn't know anything!

Offline Vahe231991

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Re: Blue Origin's BE-4 Engine
« Reply #1947 on: 10/09/2022 02:57 am »
Outstanding!  Now ULA can get started on integrating this engine (FE-2?) while the other goes through its acceptance tests.
Once FE-1 passes acceptance tests and is delivered to ULA, the next step for ULA in preparing the Vulcan rocket for its first launch besides integrating the BE-4s is to wait for delivery of the Peregrine spacecraft.

Offline Robert_the_Doll

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Re: Blue Origin's BE-4 Engine
« Reply #1948 on: 10/09/2022 04:14 am »
The other step is actually getting Centaur V ready. Peregrine is actually unnecessary at this point since the mass simulator is built and can be flown in its place if needed.

Online Eric Hedman

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Re: Blue Origin's BE-4 Engine
« Reply #1949 on: 10/09/2022 04:27 am »
The other step is actually getting Centaur V ready. Peregrine is actually unnecessary at this point since the mass simulator is built and can be flown in its place if needed.
The question is how much time will they give Peregrine before they switch to the mass simulator after the whole launch vehicle is ready to go.

Offline Robert_the_Doll

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Re: Blue Origin's BE-4 Engine
« Reply #1950 on: 10/09/2022 05:04 am »
Tory Bruno indicated a few months ago when it was expected that Vulcan would fly in December that he could give Astrobotics until January. So not too long. A few months at most.

Offline deadman1204

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Re: Blue Origin's BE-4 Engine
« Reply #1951 on: 10/10/2022 02:15 pm »
I'm a little fuzzy on the details. Wasn't the plan that there would be 4 engines, 2 for ULA, and 2 for further testing - which would happen at the same time as ULA getting Vulcan ready? So aren't there 2 more engines coming for stand testing?

Online FutureSpaceTourist

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Re: Blue Origin's BE-4 Engine
« Reply #1952 on: 10/10/2022 02:33 pm »
https://twitter.com/joroulette/status/1579474930659627008

Quote
Vulcan's core booster has been ready for months. Blue Origin delivered its first BE-4 flight engine to ULA late last night, and Bruno expects the other engine to arrive in November after Blue had to fix a manufacturing defect. Targeting first Vulcan firings on FL pad in December

Online Vettedrmr

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Re: Blue Origin's BE-4 Engine
« Reply #1953 on: 10/10/2022 02:41 pm »
I'm a little fuzzy on the details. Wasn't the plan that there would be 4 engines, 2 for ULA, and 2 for further testing - which would happen at the same time as ULA getting Vulcan ready? So aren't there 2 more engines coming for stand testing?

Yes, those engines are expected to undergo qualification testing, which AIUI are considerably more strenuous than the acceptance tests.  THE UNSTATED expectation was that the two qualification engines have to complete their qual tests (i.e. don't skip anything), and the result of those tests have to be good enough to go forward with a launch.
Aviation/space enthusiast, retired control system SW engineer, doesn't know anything!

Offline Robert_the_Doll

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Re: Blue Origin's BE-4 Engine
« Reply #1954 on: 10/10/2022 08:57 pm »
I'm a little fuzzy on the details. Wasn't the plan that there would be 4 engines, 2 for ULA, and 2 for further testing - which would happen at the same time as ULA getting Vulcan ready? So aren't there 2 more engines coming for stand testing?

Yes, those engines are expected to undergo qualification testing, which AIUI are considerably more strenuous than the acceptance tests.  THE UNSTATED expectation was that the two qualification engines have to complete their qual tests (i.e. don't skip anything), and the result of those tests have to be good enough to go forward with a launch.


There have a been enough test firings spotted via satellite and posted by Harry Stranger on Twitter and elsewhere that indicate there have been qualification test firings by a BE-4 engine and most certainly could not have been FE-2.

So, unless FE-1 has long been back in Texas and test fired already, then the only other logical conclusion is that this is one or more of the qualification BE-4s.

Offline Starshipdown

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Re: Blue Origin's BE-4 Engine
« Reply #1955 on: 10/10/2022 09:56 pm »
It's very interesting to see a work stand at XEEx that's very similar to the assembly stands up at the Kent factory. I wonder what work would need to be done to bring XEEx up to a comparable standard to Kent so that work, like that needed to be done to correct the flaw on FE-1 can be done there instead of having to waste weeks shipping an engine back and forth:

 

Re: Blue Origin's BE-4 Engine
« Reply #1956 on: 10/10/2022 11:44 pm »
The knowledge is power...Everything is connected...
The Turtle continues at a steady pace ...

Online TrevorMonty

Re: Blue Origin's BE-4 Engine
« Reply #1957 on: 10/10/2022 11:59 pm »
https://twitter.com/torybruno/status/1579617777559949314

Prime delivery fast furious...
Fast is last word to describe anything to do with BE4 program.

Re: Blue Origin's BE-4 Engine
« Reply #1958 on: 10/11/2022 12:08 am »
https://twitter.com/torybruno/status/1579617777559949314

Prime delivery fast furious...
Fast is last word to describe anything to do with BE4 program.

Let's see, when we see another engine like BE-4 in power, be ready for orbital flight...and compare the timeline...

https://en.wikipedia.org/wiki/SpaceX_Raptor

https://en.wikipedia.org/wiki/BE-4
« Last Edit: 10/11/2022 12:09 am by Tywin »
The knowledge is power...Everything is connected...
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Online DanClemmensen

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Re: Blue Origin's BE-4 Engine
« Reply #1959 on: 10/11/2022 12:42 am »
Tory Bruno asks: "Hmm. What’s that?  Looks like a BE4 flight engine being uncreated at the Rocket Factory in Decatur."

Wow, that's an impressive Freudian slip. "Uncreated", indeed. We've seen several Raptors get uncreated, but I thought the industry-standard term was "RUD".
« Last Edit: 10/11/2022 12:43 am by DanClemmensen »

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