Path: utzoo!attcan!uunet!husc6!linus!mbunix!wgm From: wgm@mitre-bedford.ARPA (Gregory M. Woodhouse) Newsgroups: sci.space.shuttle Subject: Re: shuttle landing sites Message-ID: <41847@linus.UUCP> Date: 16 Nov 88 15:20:06 GMT References: <1988Oct10.224026.12802@utzoo.uucp> <3330011@hpindda.HP.COM> Sender: news@linus.UUCP Reply-To: wgm@mbunix (Woodhouse) Organization: The MITRE Corporation, Bedford, Mass. Lines: 21 In article <3330011@hpindda.HP.COM> mears@hpindda.HP.COM (David B. Mears) writes: > >I would hazard a guess that dumping the fuel has nothing to do with the >weight of the aircraft, but is done for fire safety reasons. I think >this is pretty standard in commercial aviation (though I could be >mistaken). > >David B. Mears Fuel Dumping is done for weight reasons. I have had to dump fuel in fighers several times, since fighters routinely take off at a gross weight greater than their maximum landing weight. Heavy aircraft (both fighters and airliners fall into this category) increase their landing speeds based on their landing gross weights. A fully loaded fighter would have to land at a speed that would exceed the limitations on the tires (200kts on an F-105G for instance) so that fuel would have to be dumped (or in the case of the F-105G, burned using "burners and boards") to reduce the landing speed below acceptable limits. Greg Woodhouse wgm@mitre-bedford.arpa