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How efficient tailless airplane is better than tail plane?
Tailless aircraft have advantages over ordinary aircraft, such as reduced weight and drag. However, these benefits have trade-offs. Tailless planes are inherently unstable and difficult to control.
Tailless aircraft are lighter because they don’t have a tail and because they need less weight up front without a tail. These aircraft also have smaller profiles, which decrease the amount of drag produced by the aircraft and create a smaller radar cross-section for more stealth.
However, tailless airplanes are less stable because they don’t have horizontal and vertical stabilizers. Also yaw control is more difficult. Many tailless airplanes, like the Blended Wing Body, use many control surfaces to stabilize the aircraft. These surfaces increase cost and the number of failure points.