Re: Naming 'the stick'

Douglas Holmes <noholmesdgspam@xxxxxxxxxxx> wrote:
>>>You would need a very powerful upper stage and
>>>would have to prevent the EELV's from using the same stage.
>>>
>> Stages aren't often swapped between launch vehicles. And putting an S-IVB
>> stage atop a Delta IV or an Atlas V... I think it'd crush those vehicles.
>>
>RL-10 has been used on many rockets.
>Both EELV are designed to hold larger upper stages in the 100,000 lb range.
>It would take some modifications to go much bigger.

Though I understand your desire to make a more fair
comparison, the D-IV and A-V payload guides seem to
indicate that no, they don't have that much structural
margin available for larger upper stages without making
major structural changes to the common core units.

Now, the payload guides aren't definitive structural design
or analysis documents, to be sure. But the claim you are
making is new to me, and I've followed the vehicles for a
long time and designed things intended to mate with both
of them before. And your claim feels wrong as well as
not being supported by the published documentation we
do have available.

I would appreciate seeing some documentation or other
supporting evidence that 100klb upper stages were
intended or are supported by the existing EELVs.

I certainly don't want to claim you couldn't make the
design modifications... adding tank strength is not
a fundamentally hard thing. But it requires a whole
new structural and flight analysis, so it's a Big Deal.


-george william herbert
gherbert@xxxxxxxxx

.

Relevant Pages

  • Re: What sort of documentation is most useful for a java application?
    ... documentation for java are most useful. ... Apart from java docs however what do ... amount of documentation supporting it, ... I would suspect some sort of high level design of the ...
    (comp.lang.java.programmer)
  • How the Big 3 can help bailout the Bailout
    ... utilize their resources, capabilities, and potential to design, ... vehicles, Electric Vehicles, and Mass Transit systems? ... not just build cars and trucks. ... Chrysler, Ford, and General Motors have the experience, capabilities, ...
    (alt.politics)
  • BIG 3 BAILOUT
    ... Motors never again have to return to Washington D.C. for a handout? ... Motors do not just build cars and trucks. ... they create, design, ... and designing a variety of vehicles for a variety of applications; ...
    (alt.politics)
  • Re: Manchester Metolink - New Trams
    ... Apart from the vehicle design itself which i find ... so the new livery combines all those elements with ... As far as the vehicles go, at least they've ordered a standard European ... I wouldn't say the same for Midland Metro's fleet. ...
    (uk.railway)
  • Re: Just a little anecdotal evidence
    ... vehicle with an uninspired design and neither are most consumers. ... ..vehicles that look pretty ugly, but are very good at what they do. ... For their intended function, wind resistance is irrelevant (how people use ... to your buildings analogy... ...
    (alt.html)