Fuselage for an airplane comprises necking on its outer periphery consisting of a steeply falling step surface and a gradually rising surface in the direction of air flow

摘要

Fuselage (1) comprises necking (2) on its outer periphery consisting of a steeply falling step surface and a gradually rising surface in the direction of air flow. The necking has a depth of 10-30 cm and a width (b) of 2-6 m. Preferred Features: An annular, air-tight boxing system is tightly connected in an air-tight manner to the necking walls on the creation of an air-tight safety zone. The necking is arranged along the fuselage at a distance (a) corresponding to 2-4 times the width. The necking covers 5-10% of the outer surface of the fuselage.