I would add the Titan III and IV solids to those numbers. Segmentation is a
good breakpoint.
-George
Sent from my iPhone
On Apr 28, 2020, at 10:53 AM, William Claybaugh <wclaybaugh2@xxxxxxxxx> wrote:
Per Henry, looking at large solids only; I find 216 launches of the Ariane 5
SRB’s and 266 launches of the Shuttle SRB’s with one failure: one in 482 at
50% confidence.
Reliability is a consequence of statistical analysis, not of emotional
opinion.
Bill
On Tue, Apr 28, 2020 at 10:37 AM roxanna Mason <rocketmaster.ken@xxxxxxxxx>
wrote:
It doesn't matter, failure is just that the end result.
On Tue, Apr 28, 2020 at 1:05 AM Uwe Klein <uwe@xxxxxxxxxxxxxxxxxxx> wrote:
Am 28.04.2020 um 08:21 schrieb ken mason:
In my aerospace career the following major rocket failures
occurred related directly to a solid rocket motor.
Space Shuttle Challenger
Titan 34D, VAFB SRB failed ~T+15, loss of a 1 B$ DOD payload, possibly
KH-11, 12 or Lacrosse.
Delta with SRB failure ~T+15, I forgot the date/mission but you all
remember the shower of flaming solid propellant onto PRV's,
Privately Owned Vehe's
IUS failed at orbital insertion, circa ~1986
I was involved in the investigations of #2&4, both occurred mid 80's
while working at UTC/CSD San Jose,CA.
Avoidable issues?
Ariane SRBs seem to have shown no failures? ( 200+ items flown.)
Shuttle SRB had a technical failure that was caused by top level
management errors.
Uwe
