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=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 101deb,f96f757d5586710a X-Google-Attributes: gid101deb,public X-Google-Thread: f43e6,5ac12f5a60b1bfe X-Google-Attributes: gidf43e6,public X-Google-Thread: 103376,5ac12f5a60b1bfe X-Google-Attributes: gid103376,public From: Ken Garlington Subject: Re: Ariane 5 - not an exception? Date: 1996/08/09 Message-ID: <320B06ED.6832@lmtas.lmco.com>#1/1 X-Deja-AN: 173155519 references: <4t9vdg$jfb@goanna.cs.rmit.edu.au> <31FE35BC.1A0D@sanders.lockheed.com> <4totv7$o9f@goanna.cs.rmit.edu.au> <32065615.77C7@sanders.lockheed.com> <4u7fdm$e6m@morgan.vf.lmco.com> <839455168snz@nezumi.demon.co.uk> content-type: text/plain; charset=us-ascii organization: Lockheed Martin Tactical Aircraft Systems mime-version: 1.0 newsgroups: comp.software-eng,comp.lang.ada,comp.lang.pl1 x-mailer: Mozilla 2.02 (Macintosh; I; 68K) Date: 1996-08-09T00:00:00+00:00 List-Id: Martin Tom Brown wrote: > > The most obvious choice is drop back to a simple, but not necessarily > accurate primitive hardware backup system like levers and gyroscopes. > I have much more faith in the ability of mechanical and electronics > engineers to tolerance their designs for adverse conditions. When my > neck is on the line I like to see physical hardware interlocks in place. I think "faith" is certainly the right word for this belief, particularly given the complexity of modern ASICs. If there's a simple mechanical backup or interlock available, it's certainly a worthwhile design consideration. However, feedback systems don't always react well to suddenly being locked into a fixed position! > -- > Martin Brown __ CIS: 71651,470 > Scientific Software Consultancy /^,,)__/ -- LMTAS - "Our Brand Means Quality"