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#560
by
robertross
on 05 Dec, 2010 14:34
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Perhaps we need to go back to pre-launch photos like this one.
I only see a single engine (but there's quite a bit of stuff in the way).
Well the document, though preliminary, shows two, and I don't doubt it.
1) Redundancy
2) Necessary de-orbit thrust
3) more balanced thrust (yes, I realize gimballing could correct this, but needed more for 1-engine out ops)
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#561
by
robertross
on 05 Dec, 2010 14:41
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#562
by
JosephB
on 05 Dec, 2010 14:41
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Well, I'm only seeing one engine but it does look off center.
Maybe it preserves the option for another engine if needed? (OME1 per pg. 4 diagram).
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#563
by
edkyle99
on 05 Dec, 2010 19:46
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#564
by
robertross
on 05 Dec, 2010 20:14
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#565
by
edkyle99
on 06 Dec, 2010 01:35
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#566
by
Robotbeat
on 06 Dec, 2010 03:50
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#567
by
edkyle99
on 06 Dec, 2010 04:14
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#568
by
Paul Adams
on 06 Dec, 2010 05:52
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Amazing to see what this machine has achieved, makes one wonder what other cancelled programs could have done.
Reading over the latest posts; I went back and looked at some of the pre-launch photos. Can anyone tell me what the multiple disc shapped objects on the inside walls of the fairing are?
Thanks,
Paul
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#569
by
TheFallen
on 06 Dec, 2010 05:56
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Reading over the latest posts; I went back and looked at some of the pre-launch photos. Can anyone tell me what the multiple disc shapped objects on the inside walls of the fairing are?
I believe they're used for acoustic purposes...reduce the amount of noise within the fairing during launch.
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#570
by
Skyrocket
on 06 Dec, 2010 06:00
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I believe the HTV uses a kind of R-4D.
Interesting that both Aerojet and IHI claim to have powered
HTV....
HTV-1 used R4D-11 engines, while HTV-2 and later will use the IHI engines
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#571
by
JosephB
on 06 Dec, 2010 10:59
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I believe the HTV uses a kind of R-4D.
Interesting that both Aerojet and IHI claim to have powered
HTV....
HTV-1 used R4D-11 engines, while HTV-2 and later will use the IHI engines
Interesting info guys. IHI must be under license to manufacture with Aerojet?
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#572
by
Skyrocket
on 06 Dec, 2010 11:29
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I believe the HTV uses a kind of R-4D.
Interesting that both Aerojet and IHI claim to have powered
HTV....
HTV-1 used R4D-11 engines, while HTV-2 and later will use the IHI engines
Interesting info guys. IHI must be under license to manufacture with Aerojet?
No, why? These are different engines.
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#573
by
Jim
on 06 Dec, 2010 11:52
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Amazing to see what this machine has achieved, makes one wonder what other cancelled programs could have done.
Reading over the latest posts; I went back and looked at some of the pre-launch photos. Can anyone tell me what the multiple disc shapped objects on the inside walls of the fairing are?
Thanks,
Paul
That is FAP. fairing Acoustic Panels. Tape covered foam with a thin aluminum horn in it.
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#574
by
Rocket Guy
on 07 Dec, 2010 02:48
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There is only one engine nozzle and it is in the center.
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#575
by
robertross
on 07 Dec, 2010 02:59
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There is only one engine nozzle and it is in the center.
Really??
Well that is certainly weird.
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#576
by
Jim
on 07 Dec, 2010 15:44
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There is only one engine nozzle and it is in the center.
Confirmed by drawings of the vehicle
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#577
by
kevin-rf
on 07 Dec, 2010 15:47
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Article in DefenseNews :
http://www.defensenews.com/story.php?i=5176376&c=AME&s=TOPOf interest was:
The only physical damage seen so far has been seven areas where space debris collided with the aircraft. It also blew out a tire upon landing. McKinney, meeting with reporters at the Pentagon on Monday, said he wasn't sure if that stemmed from a collision on the runway, a problem with the tire itself or something else.
Anyone have a link to a transcript of the news conference this came out of?
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#578
by
agman25
on 07 Dec, 2010 17:02
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Did the X-37 set a record for longest duration spaceflight and return to Earth?
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#579
by
edkyle99
on 07 Dec, 2010 17:20
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Did the X-37 set a record for longest duration spaceflight and return to Earth?
Japan's Hayabusa probe was in space for seven years before its sample capsule returned.
LDEF was in orbit for 5.7 years before being returned by Shuttle.
NASA's Genesis spent three years in space before, crash-landing on Earth.
The NRO's KH-9 "Big Bird" satellites were said to have operated for up to 275 days before returning their final film capsules.
Etc.
- Ed Kyle