Author Topic: RS-25 testing/development at Stennis for SLS - DISCUSSION  (Read 58328 times)

Online theinternetftw

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Re: RS-25 testing/development at Stennis for SLS - DISCUSSION
« Reply #120 on: 12/13/2018 08:51 pm »
Northrop also tried reusing 30 year old engines. After that Cygnus flew on Atlas for a bit...

None of the RS-25D engines that are going to be flown on the SLS are that old.

The RS-25D variant's first flight was in 2001. The oldest components retrofitted into an RS-25D look to be ones that first flew in 1995. I *think* that particular one is in the SLS engine stock.
« Last Edit: 12/13/2018 08:53 pm by theinternetftw »

Offline Tuna-Fish

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Re: RS-25 testing/development at Stennis for SLS - DISCUSSION
« Reply #121 on: 12/16/2018 01:20 am »
Wonder if any Merlin's come close  ;D

Flight engines are unlikely to rack up that much time, and SpaceX likes to blow up their test articles by ramping up the conditions after sufficient testing at reasonable parameters so none of those are likely to survive that long.

Online docmordrid

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Re: RS-25 testing/development at Stennis for SLS - DISCUSSION
« Reply #122 on: 12/16/2018 04:35 am »
Wonder if any Merlin's come close  ;D
>
SpaceX likes to blow up their test articles by ramping up the conditions
>

Ex

Air & Space...

Quote
Part of the Merlin’s qualification testing involves feeding a stainless steel nut into the fuel and oxidizer lines while the engine is running—a test that would destroy most engines but leaves the Merlin running basically unhindered.
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Offline rosbif73

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Re: RS-25 testing/development at Stennis for SLS - DISCUSSION
« Reply #123 on: 01/10/2019 06:44 am »
ARTICLE: Government MECO delays RS-25 testing following premature shutdown -

https://www.nasaspaceflight.com/2019/01/government-meco-rs-25-premature-shutdown/

https://twitter.com/NASASpaceflight/status/1083064629364953088

Gotta love that title, Chris! Main Executive Cut-Off, I presume :-)

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