From: email@example.com (Richard N. Rea) Organization: Brigham Young University Date: 13 May 96 02:08:46 References: 1 2
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In article <airliners.1996.652@ohare.Chicago.COM> Jay Selman <firstname.lastname@example.org> writes: >"John O'Brien" <email@example.com> wrote: -Snip! >>Will there ever be another T-Tailed airliner >>after the current ones become obsolete ? I know its all -Snip! >I could be wrong but I believe the T-tail evolved in modern airliners as a >result of keeping the horizontal stabilizer out of the exhaust path of >planes built with rear-mounted engines. Offhand, I'd reckon to say that >all airliners with engines on the aft fuselage have t-tails, or at least >some variation of that. >As for turboprops with t-tails, again, I imagine that the idea is to keep >the stab out of harm's way from engine exhaust. On that subject, a >notable exception is the Shorts 330/360. Does anyone know if the engine >exhaust hitting the horizontal stab causes any structural problems?? T-Tails keep the rudder from being blocked by the horizontal stabilizer at high angles of attack, which would reduce its effectiveness at the onset of a stall. There are tradeoffs with a T-Tail such as the extra structural requirements for the vertical stabilizer, aerodynamics of the intersection of the horizontal and vertical surfaces, etc. BTW: The C-5 and the C-141 both use T-Tails, although this may be due to the aerodynamics of the rear upswept fuselage.