Re: OT: Ares engine test

On Sep 13, 1:30 am, Fred J. McCall <fjmcc...@xxxxxxxxx> wrote:
"David E. Powell" <David_Powell3...@xxxxxxx> wrote:

:On Sep 12, 6:49 pm, Jack Linthicum <jacklinthi...@xxxxxxxxxxxxx>
:wrote:
:>
:> Not necessarily, there was a comparison between Apollo technology and
:> Saturn technology and some of each was included in Ares. Now there is
:> another factor in that the moon mission seems to be thought of as
:> unnecessary.
:>
:

I'm curious just what from Saturn Jack thinks was incorporated in
Ares.

:
:The workups in computers, wind tunnels and so forth still take huge
:time, then the mock up phase etc.
:
:The space program has been dragged out for so long. Punting it another
:couple years isn't a good idea with the Space Shuttle due to phase out
:soon.
:
:If it is a feasible design, there is something to be said for just
:going with it.
:

This is how we got the Shuttle.  A history of bad decisions isn't a
good reason to go with the bad decisions.

:
:If there are other boosters under consideration, then they need to be
:put out in the open, tested and man rated. Without doing that it
:removes a program without anything in the pipe to take its place.
:
:The moon mission may be needed to get the program going. Direct to
:Mars is a big jump in capacity, and there is a lot of generational
:knowledge that would be nice to have before a Mars shot.
:

Mars is a whole new rocket.  Ares V will never get built under this
Congress and Administration.  Trillions for shovels but not a nickel
for anything more sophisticated.

--
"The reasonable man adapts himself to the world; the unreasonable
 man persists in trying to adapt the world to himself. Therefore,
 all progress depends on the unreasonable man."
                                      --George Bernard Shaw



The J-2X engines were considered
Earth Departure Stage

The upper stage (Earth Departure Stage) being designed at Marshall, is
propelled by a J-2X main engine fuelled with liquid oxygen and liquid
hydrogen. The J-2X is an evolved variation of two historic
predecessors: the powerful J-2 upper-stage engine that propelled the
Apollo-era Saturn 1B and Saturn V rockets to the moon and the J-2S, a
simplified version of the J-2 developed and flight-tested in the early
1970s but never flown.

http://www.aerospaceguide.net/spacerocket/aresv.html

and the NASA version, longer, of course

http://www.nasa.gov/mission_pages/constellation/ares/aresV/index.html
.

Relevant Pages

  • Re: Ares vs Delta or Atlas
    ... :> upgraded Delta or Atlas launch Orion without huge changes to the ... :SATURN my friend if they havn't destroyed the blueprints. ... Ares is not really a leap. ...
    (sci.space.policy)
  • Re: Ares 1-Y flight shifted 12 months from to September 2013
    ... is blowing on Ares I development. ...  I've got to believe that flying Orion on ... Saturn put a partialled fuelled rocket into LEO. ... modern guidance system. ...
    (sci.space.policy)
  • Re: Ares vs Delta or Atlas
    ... "Close equivalents" requires a redesign and recertification. ... :If it is NOT better why not just build Saturn? ... start from requirements and design something better. ... :But Ares has the same role as Saturn. ...
    (sci.space.policy)
  • Re: Ares vs Delta or Atlas
    ... :>:SATURN my friend if they havn't destroyed the blueprints. ... preceding statement by Ian is wrong. ... Ares, of course, uses modern electronics ... Ares vehicles are two-stage. ...
    (sci.space.policy)
  • Engine in Rocket Park at JSC
    ... engines on display outside the Saturn V building. ... them are F-1 and J-2 for the Saturn V. ... In this picture you can see a J-2 at the lower left next ...
    (sci.space.history)
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