I think this will kill man-rating SRBs.
Part 1:
http://www.youtube.com/watch?v=hQifKbJEeGs
Part 2:
http://www.youtube.com/watch?v=kTT052ifSYY
Don't forget to get a free copy of my story at lulu.com -- search for "deger"
Subscribe to:
Post Comments (Atom)
you know that the standard SRB has been already man-rated and accomplished over 250 (2x) successful manned launches with the Shuttle (with just ONE failure) while, the only doubts, could be for the new 5-segments SRB that will have a +25% internal pressure without being have a new and stronger case
ReplyDeleteBut you need to consider the range safety guys are going to blow the SRB up shortly after ALL aborts. We aren't protecting for the SRB blowing up on its own. We are protecting for the 100% probability of range safety initiation.
ReplyDeleteBut, thanks for the info on the 5 segment pressure increase. I wonder if this means Ares violates the 1.4 safety factor?
The RSRMV case is built pretty conservatively, but you're right - it's the same case as the Shuttle SRB's. Head end pressure over 1100 psi is enough to recommend an abort. ATK hydro-proofs each case and dome segment of the motor to 1.12 times maximum expected operating pressure.
ReplyDeleteI don't know the actual safety factors used, but in case burst scenarios (bore choking, nozzle plugging) we usually don't expect anything to pop until 1600 psi or so.