Author Topic: 2012/2013 Ares I (X Prime) test flight  (Read 5407 times)

Offline renclod

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2012/2013 Ares I (X Prime) test flight
« on: 11/20/2009 12:09 PM »
We have this:
http://blogs.nasa.gov/cm/blog/Constellation.blog/posts/post_1257272662132.html
"Managers are also considering other options including a flight test that would fly in 2012 or 2013 that would have revised flight test objectives to better support vehicle development."

Also this (from another thread):
[author=Scotty link=topic=19530.msg506103#msg506103 date=1258599720]
"MSFC is looking at Ares 1-X Prime right now.
It would be sort of a repeat of Ares 1-X but with a five segment booster along with a dummy Orion crew module with a functional LAS.
It would be in effect a staging abort test.
The flight would be about 25 months from now.
The decision to go ahead or not, will be made early next year."


What would be maximal scope of this test (realistically) ?

1. First stage, full prototype [edit: including
2. Frustum ]
3. Interstage
4. U/S aft skirt
5. Instrument unit structure
6. Instrument unit avionics (subset)
7. First stage flight software
8. U/S ullage motors
9. RoCS
10. U/S RCS
11. Staging event a la Ares I (J-2X nozzle mockup extraction)
12. F/S recovery
13. LAS test right after staging
14. TO mitigation, C-spring isolation ring
15. TO mitigation, LOX damper sub-scale experiment

If Ares I avionics (subset) prototype could not be ready by 2012/13, are recovered I-X avionics re-useable ? (or a new set would be required ?)

« Last Edit: 11/20/2009 12:20 PM by renclod »

Offline ChaseOne

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Re: 2012/2013 Ares I (X Prime) test flight
« Reply #1 on: 11/20/2009 09:01 PM »
I have to wonder, if MSFC is really thinking this way, that must mean that preliminary results from 1-X are good and that and the post Augestine fallout my not kill Ares 1 as fast as some of us think. Or, MSFC believes in Santa?
"Let"s go to the moon and do the other things, not because they are easy but because they are hard" JFK

Offline Ben the Space Brit

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Re: 2012/2013 Ares I (X Prime) test flight
« Reply #2 on: 11/20/2009 09:13 PM »
@ ChaseOne,

The cynic in me thinks that the guys in the trenches are probably telling themselves something like this: "I'm just going to keep my head down and do exactly what the boss tells me, no more and no less.  If I remain off the radar and non-threatening, then I have a better chance of surviving no matter how the chips fall."
"Oops! I left the silly thing in reverse!" - Duck Dodgers

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The time for words has passed; The time has come to put up or shut up!
DON'T PROPAGANDISE, FLY!!!

Offline kraisee

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Re: 2012/2013 Ares I (X Prime) test flight
« Reply #3 on: 11/20/2009 09:32 PM »
The real situation is that the bosses are never going to 'say' the project is over until they already have the next project lined up ready to push the staff all towards.

The next project is simply not yet lined up.

Ross.
« Last Edit: 11/20/2009 09:33 PM by kraisee »
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Offline yg1968

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Re: 2012/2013 Ares I (X Prime) test flight
« Reply #4 on: 11/26/2009 03:28 AM »
The real situation is that the bosses are never going to 'say' the project is over until they already have the next project lined up ready to push the staff all towards.

The next project is simply not yet lined up.

Ross.

There was also some talk of keeping Ares I as a developmental rocket for Ares V.
« Last Edit: 11/26/2009 04:13 AM by yg1968 »

Offline renclod

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Re: 2012/2013 Ares I (X Prime) test flight
« Reply #5 on: 11/26/2009 07:51 AM »
As far as I can tell, Arex I-X' has the exact same mission profile of Ares I-Y. Five segment SRB, dummy upper stage and J-2X engine, and an abort after US separation.

Same mission profile of the old Ares I-Y, but I-Y was put through a CxP flight manifest change request [004] initiated in dec.2008 and refined in may-june 2009 (as documented somewhere on the internet, Ares.CR.pdf ).

According to that C.R., I-Y was moving from sep.2013 to mar.2014 and getting a functional U/S, functional engine (E1006), 8 minutes mission duration, and no clear (TBR) Orion flight test objectives - for instance, even nominal LAS jettison was not mentioned.

What was the fate of this change request is not clear, but my reading of what CxP blogged (and Jeff Hanley said in an interview) is that Ares I-Y as modified through the C.R. would be too late to provide timely/useful data to incorporate before 2015 IOC.

OTOH the old Ares I-Y had a "high fidelity" U/S and cryo tanking which is not clear to be doable for a [Ares I-Xprime] 2012 test flight. 

But, a whole bunch of FTAs could conceivably be ready for I-X', and this is why I put a list in the originating post, to ask people what could be ready and what could not.


Offline Steven Pietrobon

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Re: 2012/2013 Ares I (X Prime) test flight
« Reply #6 on: 11/27/2009 04:51 AM »
Thanks very much for the explanation renclod! If you read page 2 of Ares.CR.pdf, that gives the old objectives for Ares I-Y. Except for points (b) and (i) related to cryogenic loading, Ares I-X' would demonstrate 14 of the 16 objectives.
« Last Edit: 11/27/2009 05:05 AM by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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