[AR] modeling Electron (was Re: Successful liquid launch at FAR)
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Tue, 18 Jan 2022 00:56:48 -0500 (EST)
On Tue, 18 Jan 2022, Troy Prideaux wrote:
If I vaguely recall, the Electron does have an unusually high reliance
on its 2nd stage for complete delta V? If so, that would allow the
potential for much higher mass ratios and overall engine performance in
comparison which can skew things I suppose.
One problem John has mentioned in conversation in the past is that the
second stage jettisons spent batteries partway through its burn, there
doesn't seem to be any public information about how much they weigh, and
it really matters to performance modeling.
And one problem that I have definitely noticed is that the Electron
Payload User's Guide is distinctly short of performance data. Even the
data on the basic two-stage configuration is frustratingly sketchy --
better than it used to be, but not by much. When it comes to the optional
third stage ("kick stage"), there's hardly anything but marketing puffery,
with nary a useful number to be seen.
Henry
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