Author Topic: LIVE: H-IIB launch with HTV-1 - September 10, 2009  (Read 173528 times)

Offline nooneofconsequence

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Re: LIVE: H-IIB launch with HTV-1 - September 10, 2009
« Reply #280 on: 09/14/2009 10:06 pm »
How many RS-68A's are in the HTV?

None
The H-IIB uses two LE-7A's.
« Last Edit: 09/14/2009 10:07 pm by nooneofconsequence »
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Online ugordan

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Re: LIVE: H-IIB launch with HTV-1 - September 10, 2009
« Reply #281 on: 09/14/2009 10:09 pm »
How many RS-68A's are in the HTV?
None
The H-IIB uses two LE-7A's.

lol, I think what rdale was actually saying is: D-IV and RS-68A are off-topic here.

Offline zaitcev

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Re: LIVE: H-IIB launch with HTV-1 - September 10, 2009
« Reply #282 on: 09/15/2009 12:17 am »
Ed Kyle's site says that H-IIB used LE-5A on the second stage, but JAXA's booklet says LE-5B. Who is right? I e-mailed Ed a couple of days ago but haven't heard anything back.

Offline edkyle99

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Re: LIVE: H-IIB launch with HTV-1 - September 10, 2009
« Reply #283 on: 09/15/2009 12:40 am »
Ed Kyle's site says that H-IIB used LE-5A on the second stage, but JAXA's booklet says LE-5B. Who is right? I e-mailed Ed a couple of days ago but haven't heard anything back.

JAXA is right.  It is LE-5B.  LE-5 was a gas generator engine that flew on H-1.  LE-5A was an expander cycle engine that flew on H-2.  LE-5B is a less costly expander cycle engine developed for H-2A and now also flying on the nearly-identical H-2B powered second stage.  The current variant, which first flew on the F-14 H-2A mission, is apparently called H-2B-2.

 - Ed Kyle
« Last Edit: 09/15/2009 12:44 am by edkyle99 »

Offline JosephB

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Re: LIVE: H-IIB launch with HTV-1 - September 10, 2009
« Reply #284 on: 09/15/2009 01:34 am »
Thanks for the info & apologize for getting OT.

Offline Fuji

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Re: LIVE: H-IIB launch with HTV-1 - September 10, 2009
« Reply #285 on: 09/16/2009 11:19 pm »
H-IIB onboard camera position.

These images captured from Camera A, C, D in order.
http://www.jaxa.jp/countdown/h2bf1/live/photo_movie_e.html

Offline sdsds

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Re: LIVE: H-IIB launch with HTV-1 - September 10, 2009
« Reply #286 on: 09/21/2009 05:38 am »
Congrats to our Japanese partners on a successful launch.  I agree with the other folks that I can't wait to see the HTV do it's on-orbit ops.

I'll also throw in my $0.02 to agree with Ed on comments regarding the SRB design ideas.  Everybody has good ideas, and the serious scale of the SRBs is one that our engineers should be paying attention to a little closer.  Sure gave that H-IIB a swift kick in the rear off the pad!

It's interesting to note these SRBs will apparently form the basis for the first stage of Japan's "Advanced Solid Rocket."  See figure 2 in http://www.senkyo.co.jp/ists2009/papers/html/pdf/2009-g-21.pdf
— 𝐬𝐝𝐒𝐝𝐬 —

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