Randall Clague wrote:
Yuck. The gear needs to handle at least some of the takeoff weight,
or your only abort option includes standing on a pillar of fire for
several minutes after a serious malfunction - not my idea of fun. If
you don't want to do that - and I don't blame you - then you have no
abort options,
Rockets lose mass very quickly early on. If you're supersonic, you're
better off ditching your fuel and riding down. If you're subsonic you
stop the engine and eject. If you're at very low altitude, one of those
emergency towerey thingeys like they used on Apollo may save you.
Otherwise, oxidiser and fuel are getting married and you're the best man.
I've never done a mass estimate for landing gear.
Think of a number you can afford; multiply by your mass fraction...
that's the answer.
-R
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