Date: 09 Apr 2001 15:37:03 From: email@example.com (Gord Beaman) Organization: ISLAND TEL References: 1 2 3
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R J Carpenter <firstname.lastname@example.org> wrote: --cut-- > >Am I naive in thinking that a "flying" tail could support the rear >engines without any of their weight being supported by the wings??? Yes, I'm afraid so, -all- of any a/c's weight is supported by the wings (or canards), none is supported by the tail surfaces at all. They're there -only- to control (along with the ailerons) the a/c in flight. As a matter of fact, in normal flight, the horizontal tail surfaces actually have a net downward force which is used in the 'vertical stability department'. >The first rear-engined jet, the Caravelle, didn't have a true T-tail. >The horizontal tail surface was still fairly low on the fin. The reason for the T tail config is to get the horizontal stab. up out of the turbulance of the rear mounted engines. When in a very nose high position the a/c can get into what's known as a 'deep stall' where the elevators are in such turbulent air from the engines that you cannot get the nose down...this apparently happened to a Trident (?) in the UK many years ago.