Falcon 9 Block 1 used 100 lbf bipropellant thusters for its RCS, then
later versions switched to cold gas because they were sick of dealing
with hypergols when they didn't have to (and they had enough data on RCS
usage to trust that they didn't have to). I do not know but strongly
suspect that they kept the 100 lbf thrust level for engineering
simplicity, and I doubt Elon is going to develop a new thruster from
scratch just for this stunt. Might wind up chopping the nozzles for
sea-level optimization.
So assume 10 x 100 lbf thrusters, maybe 400 lbf in back and 300 lbf on
each side, at 50-60 seconds Isp. How much air they plan to carry is the
big unknown.
John Schilling
john.schilling@xxxxxxxxxxxxxx
(661) 718-0955
On 9/20/2019 6:48 AM, Galejs, Robert - 1007 - MITLL wrote:
Any idea of what sort of thruster specs would be practical with such a setup?
*From:*arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> *On Behalf Of *Darren Longhorn
*Sent:* Friday, September 20, 2019 9:39 AM
*To:* arocket@xxxxxxxxxxxxx
*Subject:* [AR] Re: Tesla Thruster Specs?
My understanding is that they will be compressed air, fed from a tank where the rear seats would have been.
On Fri, 20 Sep 2019, 14:17 Galejs, Robert - 1007 - MITLL, <galejs@xxxxxxxxxx <mailto:galejs@xxxxxxxxxx>> wrote:
Tesla appears to be planning some sort of cold gas thruster option
for their new roadster model…
… See
https://insideevs.com/news/350682/tesla-roadster-spacex-thrusters/
for example…
… but I can’t find anything definitive about what these thrusters
are planned to look like. On one car enthusiast Facebook group I
subscribe to, someone was claiming that Tesla was planning to put
ten 400 lb thrusters around the vehicle which would be capable of
firing for 90 seconds, which sounds silly just thinking about the
mass of nitrogen required.
Does anyone here have any information/informed-speculation they
could share about these potential Tesla thrusters?
Thanks,
Robert