| 摘要 |
PROBLEM TO BE SOLVED: To reduce the resistance of a flat type two-dimensional rear fuselage by forming the rear fuselage in a flat shape and reducing the separation eddies in an air current. SOLUTION: On this rear fuselage 10, a vertical tail assembly 11 and a horizontal tail assembly 12 are installed in such a form as to be drawn toward a rear end part 1. For the degree of drawing, vertical drawing H0-H1 is set large, lateral drawing W0-W1 is set small, and a cross section is formed flat. By this flat form, a separation range in an air current is reduced to reduce pressure resistance, damping effect of pitching oscillation by increase of lift is improved, and because a ramp door of a cargo airplane can be set for the whole width of a fuselage, cargoes can be easily charged in and out.
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