[AR] Re: More MAX delays.
- From: "John Dom" <johndom@xxxxxxxxx>
- To: <arocket@xxxxxxxxxxxxx>
- Date: Sun, 26 Jan 2020 20:41:30 +0100
Orion is a nuclear PDE concept if I understand it correctly. There are
impressive videoclips showing a micro Orion take off using conventional
detonations.
I thought I never read mentioned *how* existing PDEs are built, technically,
on AR.
Not a rarity to hear their aerial detonations though, like around China Lake
an AR list member once reported, decades ago already. Any references like
USPs on PDE construction handy?
Not to worry, I do not intend to build one. So far.
John D.
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On
Behalf Of Henry Spencer
Sent: zondag 26 januari 2020 20:25
To: Arocket List
Subject: [AR] Re: More MAX delays.
On Sun, 26 Jan 2020, Uwe Klein wrote:
If you can't keep the reaction away from creeping up your piping:
could you do an Orion style propulsion system with that stuff?
just throw fuel bladders behind you, timed ignite.
Boom, Boom, B...
Not unthinkable, although handling the bladders would be a concern. But a
good Orion bomblet is a specialized shaped charge, not just something that
goes boom, and even so it's a fairly inefficient way to build a rocket --
too much energy is lost out to the sides, and you need some heavy handling
and shock-absorbing hardware on the vehicle. The energy loss would most
likely wipe out the gains from using acetylene; the added equipment would
rob the mixed monoprop of its only big attraction: the simpler, lighter
hardware.
Orion is really only a useful concept if you've got an immensely energetic
reaction (which is to say, beyond chemical) that doesn't lend itself to
confinement in a conventional chamber. Lacking that, a plain old biprop
rocket engine burning some ordinary fuel with some ordinary oxidizer (NOT
premixed!) is distinctly superior, if less exciting. :-)
Henry
Other related posts:
