Re: Sabre engine - pressure ratio issues

On 21 Jul, 20:26, Fred J. McCall <fmcc...@xxxxxxxxxxxxx> wrote:
Ian Parker <ianpark...@xxxxxxxxx> wrote:

:
:I feel too that in the development proram a great deal of reliance has
:to be placed on simulation. This means that reliable models of
:combustion in all conditions is needed. I assume that is what ESTEC is
:trying to do. It is just too expensive to keep on building actual
:aircraft and tweaking them
:

You also can't build good simulations for something that you don't
have measurements for. So, at the very least, they will need
hypersonic wind tunnel data on various designs in order to build a
simulation such as you propose.

That's not cheap, either.

not necessarily. What you do is measure reaction speeds in a variety
of conditions. In your simulation, which is done on a grid, you know
how much fuel and oxygen there is at every point in the grid and what
the temperature and pressure is. You start at a fairly fundamental
level and then move on. What you do is create shock waves using either
expolosives or an electrical discharge.


- Ian Parker

.

Relevant Pages

  • Re: Questions about the infamous Steam
    ... GTR Evo is a simulation. ... games do not like Grid, Need For Speed, etc. ... I recall Atari's Race Driving as ...
    (comp.sys.ibm.pc.games.action)
  • Re: Sabre engine - pressure ratio issues
    ... Ian Parker wrote: ... :>:I feel too that in the development proram a great deal of reliance has ... :> simulation such as you propose. ... In your simulation, which is done on a grid, you know ...
    (sci.space.policy)