things involving serious dynamics are hard to sort out except in
flight test,
Yup, I can't remember the number of films I've seen of Atlas launch
failures but everytime I see one it's usually one I've not seen before.
Was it in the dozens? And DOD didn't have the same test philosophy that
SpaceX/Musk has.
Ken
On Thu, Mar 4, 2021 at 7:48 AM Henry Spencer <hspencer@xxxxxxxxxxxxx> wrote:
On Thu, 4 Mar 2021, J Farmer wrote:
Elon is a fan of the "Build it, run it, break it, fix it, run it again",
rinse and repeat approach.
For much of engineering history that I recall, that was "Standard
Operating Procedure"...
Yeah, and there's a reason why engineering moved away from that. :-)
But yeah, part of the engineering data they appear to be getting is
about the Raptor design. There's a world of difference between getting
one to run on a stand and in a steady state "hop". And an equally large
jump from that to starting and stopping them while involved in energetic
vehicle maneuvers.
Yes, things involving serious dynamics are hard to sort out except in
flight test, and that just has to be allowed for.
Henry