Patent ID: 9623956
Date: 2017-04-18
CPC Classifications: B64C,Y02T

Claim:
1. A high-lift device of a flight vehicle, the high-lift device comprising: a flap main body provided at a trailing portion of a main wing of the flight vehicle so as to be extracted from and be retracted in the trailing portion and extending in a wing span direction of the main wing; and a vortex suppressing portion provided at a tip end portion of the flap main body in an extending direction of the flap main body and configured to suppress a vortex rolling up from a lower surface of the tip end portion of the flap main body to an upper surface of the tip end portion of the flap main body, wherein: the vortex suppressing portion includes the side surface ventilation structure is provided so as to cover the entire side end surface of the tip end portion of the flap main body and constitutes a side wall defining cavity.