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National Aerospace Plane (X-30) announced 20 years ago



 
 
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  #31  
Old March 28th 06, 02:48 PM posted to sci.space.shuttle,sci.space.history,sci.space.tech,rec.aviation.military
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Default National Aerospace Plane (X-30) announced 20 years ago


"Bruce Hoult" wrote in message
...
Could you please give an example of an SRB segment that has been reused,
including the flight on which it was first used, and the flight on which
it was reused.


Odd request, considering that SRB segment reuse is the norm, not the
exception.

One bit of trivia. The parachutes for the SRB's have to be washed between
flights, due to their being dunked in salt water at the end of every flight.
That task must require the world's largest washing machine. ;-)

Jeff
--
Remove icky phrase from email address to get a valid address.


  #32  
Old March 30th 06, 05:59 AM posted to sci.space.shuttle,sci.space.history,sci.space.tech,rec.aviation.military
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Default National Aerospace Plane (X-30) announced 20 years ago

"Jeff Findley" wrote in message
...

"Bruce Hoult" wrote in message
...
Could you please give an example of an SRB segment that has been reused,
including the flight on which it was first used, and the flight on which
it was reused.


Odd request, considering that SRB segment reuse is the norm, not the
exception.

One bit of trivia. The parachutes for the SRB's have to be washed between
flights, due to their being dunked in salt water at the end of every
flight.
That task must require the world's largest washing machine. ;-)


There are pictures of it on the net, but I forget where.

  #33  
Old March 30th 06, 09:56 PM posted to sci.space.shuttle,sci.space.history,sci.space.tech,rec.aviation.military
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Default National Aerospace Plane (X-30) announced 20 years ago

Jeff Findley included:

"Bruce Hoult" wrote in message
...
Could you please give an example of an SRB segment that has been reused,
including the flight on which it was first used, and the flight on which
it was reused.


Odd request, considering that SRB segment reuse is the norm, not the
exception.


So give the requested example. I'm curious too.

The norm is not established by zero examples,
nor by NASA statements that say reuse is possible but
nowhere that it has happened.


--- Graham Cowan, former hydrogen fan
Boron: internal combustion, nuclear cachet http://tinyurl.com/4xt8g
  #34  
Old March 31st 06, 11:44 PM posted to sci.space.tech
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Default National Aerospace Plane (X-30) announced 20 years ago

Derek Clarke wrote:
The DC-X approach still needs the mass equivalent of the wheels unless
you plan to use an aerospike engine and land on the plug...


But in the vertical landing approach, the "wheels" don't have to roll,
and the landing gear can be sized for a touchdown at a few m/s rather
than 100 m/s. As others have said, the mass tradeoff is between (wings
plus wheels) for horizontal landing versus (propellant plus parachute
plus landing skids) for vertical. I don't think it's entirely obvious
how this tradeoff comes out, though I'd guess it probably favors
vertical landing. To make things even more complicated, there are
other tradeoffs to be made besides mass. One example is required
cross-range capability.

 




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