From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=0.1 required=5.0 tests=BAYES_05,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,885dab3998d28a4 X-Google-Attributes: gid103376,public From: Ken Garlington Subject: Re: Ariane 5 failure Date: 1996/10/18 Message-ID: <32678222.6F5C@lmtas.lmco.com>#1/1 X-Deja-AN: 190749156 references: <96101610071768@psavax.pwfl.com> content-type: text/plain; charset=us-ascii organization: Lockheed Martin Tactical Aircraft Systems mime-version: 1.0 newsgroups: comp.lang.ada x-mailer: Mozilla 2.02 (Macintosh; I; 68K) Date: 1996-10-18T00:00:00+00:00 List-Id: Marin David Condic, 407.796.8997, M/S 731-93 wrote: > Who would want to fly in an airplane powered by engines, the > design for which had been verified by powering up a single > prototype once and running it for 10 minutes. You'd probably feel > a lot safer if we ran a couple of prototypes right into the > ground, including making them ingest a few birds and deliberately > cutting loose a turbine blade or two at speed. If you want > reliable software, the testing can be no less rigorous. Well, I know that on the YF-22 program, one of the engine manufacturers did in fact cut loose a few turbine blades during system test -- although, in that case, it was unintentional. We also ran one of the aircraft into the ground -- again, unintentionally. As for the birds, there is an interesting test done here in Fort Worth. (At least, we used to do it -- I haven't actually witnessed one of these tests lately). To determine if the canopy will survive a bird strike, they actually take a bird (presumably of mil-spec size and weight), load it into a cannon-type deveice, and fire the bird at the canopy. By the way, it's not a good idea to use a _frozen_ bird for this test... -- LMTAS - "Our Brand Means Quality" For more info, see http://www.lmtas.com or http://www.lmco.com