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During flight test of the C-141 it was found that the antimetric wing bending mode would nicely couple with the torsional Eigenmode of the the tail, resulting in. T-tails must be stronger, and therefore heavier than conventional tails. Inadequate maintenance of t-tail may lead to loss of control of the aircraft on air. Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. A T-Tail design is an aircraft configuration in which the tail control surfaces with the horizontal surface are mounted on top of the aircraft fin forming a T look when viewed from the front. The advantage for the upright V-tail in models is usually primarily structural. This is because the conventional-tail aircraft has the downwash from the propeller pushing down on the tail to assist in raising the nose. Maintenance issues: It will be difficult to climb up there and work on the T-tail if it has some problems. During that time, I never experienced an unusual attitude or soiled pants. Not only for the aerodynamic loads, but for the elevator and elevator trim mechanisms. The duct is integrated into the tail boom and is usually made of a fiberglass skin. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. somewhat difficult to align.. lots of ground clearance when landing. Rear mounted engines would also be much closer to the centerline of the aircraft, reducing the controllability issues in an engine out scenario. Learn how your comment data is processed. Discussion in 'Excavators' started by ror76a, Aug 30, 2007. Rudder authority: T-tail design gives you a better rudder authority when flying at a very high AOA and stalls thus preventing a spin. With all these advantages, why at least some of commercials does not consider this solution? BERIEV A-40 Albatross) often have T-tails in order to keep the horizontal surfaces as far from the water as possible. The horizontal force generated is "wasted" in essence as it does not contribute to the desired pitch outcome.