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: 103376,b15ce5ed141cce4a X-Google-Attributes: gid103376,public From: "Marin David Condic, 561.796.8997, M/S 731-93" Subject: Re: Ada Success Story II Date: 1997/03/05 Message-ID: <97030510245774@psavax.pwfl.com>#1/1 X-Deja-AN: 223282833 Sender: Ada programming language Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU X-Vms-To: SMTP%"INFO-ADA@VM1.NODAK.EDU" Newsgroups: comp.lang.ada X-Vms-Cc: CONDIC Date: 1997-03-05T00:00:00+00:00 List-Id: Jon S Anthony writes: >> The F22 is not the first plane to use thrust vectoring. There were >> a number of research programs that mounted thrust vectoring >> nozzles on things like the F15. We've even built a 3-D nozzle for >> the F100 engines used by F15s and F16s - nicknamed "the eyeball" > >Are these the engines that are to go on the "F15X"? My understanding >was that this was going to be an actual production version. Yes? No? > There might probably be some plans to retrofit some subset of the existing fleet with "production" thrust vectoring nozzles, but I am personally unaware of any such activity or operation... What we've mostly done is build "technology demonstrators" which someone will take and mount on the back end of an available plane and fly it around to see if it works the way you thought it should. We usually do that research in order to better design a future engine. It's pretty costly to retrofit some existing airframe and you may not get all the performance you'd expect because the airframe was never designed with the intent of utilizing the nozzle. Ultimately - if the nozzles do what you'd like - you'd be able to remove all the control surfaces off the back of the airplane. I'm afraid that I don't know anything about the "F15X" (some experiment being done by McDonnel Douglas?) at the moment. Anything you can tell me about it so I could find out who to ask? There might be some interesting control work being done there. MDC Marin David Condic, Senior Computer Engineer ATT: 561.796.8997 M/S 731-96 Technet: 796.8997 Pratt & Whitney, GESP Fax: 561.796.4669 P.O. Box 109600 Internet: CONDICMA@PWFL.COM West Palm Beach, FL 33410-9600 Internet: CONDIC@FLINET.COM =============================================================================== "Eagles may soar, but a weasle never gets sucked up into a jet engine." -- Author Unknown ===============================================================================