[AR] Re: to the stars, soon

  • From: Uwe Klein <uwe@xxxxxxxxxxxxxxxxxxx>
  • To: arocket@xxxxxxxxxxxxx
  • Date: Fri, 01 Apr 2016 08:57:28 +0200

Am 01.04.2016 um 05:41 schrieb Henry Spencer:

On Thu, 31 Mar 2016, David Weinshenker wrote:
[...] a naive attempt to build a Bussard-ramjet intake
works much better as a drag brake.

Isn't this pretty much true of any sort of ramjet
(i.e., not limited to the Bussard variety)?

I wouldn't be quite that harsh.  For some not-too-demanding cases of
atmospheric cruise, even simple ramjets can work passably well.

Now scramjets, yeah, they mostly work better as drag brakes than as
propulsion, so far. :-)

Henry


It is all about _Intakes_ !

All intakes produce drag ( missleading! in correct terminology they "are energy sinks" ).
You expect to recover and efficiently add energy in the process.
So many processes that work that way around :-)

uwe

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