then should the 1B flights of Falcon 1 be included in any tally also?
M9D will surpass RS-25 in engine flights with 10 more F9 launches, so likely later this year. It's already surpassed RL-10, though all three are comparable (+/- 50%)I think RS-27 variants have flown over 700 times, so that's the active leader for US engines. Ed probably has an exact number.
Quote from: ennisj on 04/20/2017 03:11 pmthen should the 1B flights of Falcon 1 be included in any tally also?*1A1B never made it past the drawing board.
The 3rd F1 was when they started using their own turbopump and regen right?
NASA ASAP notes:[...]The Merlin turbine disc improvements have been implemented and are in the middle of testing. One of the panel members with propulsion experience had a chance to go over it with SpaceX. Referred to it as a bladed disc (blisc) in a single forging. It's a complex, state of the art forging.
Would they have ever made that upgrade without reuse and examination of flight engines?
During qualification testing in 2015, SpaceX identified cracks in the turbines of its engine.
This is an odd one. Looks a lot like a Merlin to me, but the hand for scale on the lower right suggests it's too small, and the odd trailer-esque setup does not look familiar, nor does the giant white sphere thing. Also looks too big to be a BE-3, and the geotag is in Dallas with the suggestion that the poster's "neighbors" are rocket scientists. McGregor is about an hour and a half south of Dallas.
Quote from: vaporcobra on 10/18/2017 08:35 pmThis is an odd one. Looks a lot like a Merlin to me, but the hand for scale on the lower right suggests it's too small, and the odd trailer-esque setup does not look familiar, nor does the giant white sphere thing. Also looks too big to be a BE-3, and the geotag is in Dallas with the suggestion that the poster's "neighbors" are rocket scientists. McGregor is about an hour and a half south of Dallas.That is the EXOS Aerospace engine and test stand.
Elon Musk’s SpaceX suffers a rocket-engine failure during testingBy Christian Davenport November 8 at 10:08 AMSpaceX is investigating why one of its rocket engines exploded during a test fire earlier this week at the company’s facility in Texas, the company confirmed Wednesday.The explosion of the Merlin engine occurred on Sunday during what the company called a “qualification test.” No one was injured [...]
QuoteElon Musk’s SpaceX suffers a rocket-engine failure during testingBy Christian Davenport November 8 at 10:08 AMSpaceX is investigating why one of its rocket engines exploded during a test fire earlier this week at the company’s facility in Texas, the company confirmed Wednesday.The explosion of the Merlin engine occurred on Sunday during what the company called a “qualification test.” No one was injured [...]https://www.washingtonpost.com/news/the-switch/wp/2017/11/08/elon-musks-spacex-suffers-a-rocket-engine-failure-during-testing/
By "qualification test" I guess they mean the M1d turbopump upgrade? Or do they bunch acceptance testing into the same category?