摘要:
A method of attenuating noise of aircraft comprises researching a static pressure and an airflow velocity in a region in the vicinity of an original shape of a designed object as a flow field characteristic of the region in the vicinity of the original shape (S5), and adding a plate-shaped object for covering a surface of the original shape which is different from a surface of the original shape facing an upstream side in an airflow direction (S7) to increase the static pressure in the region in the vicinity of the original shape to reduce the airflow velocity, thereby attenuating aerodynamic noise of the designed object.
摘要:
A high-lift device (3) comprises a flap body (11) which is provided at a rear portion of a main wing (2) which generates a lift for the air vehicle such that the flap body is deployed with respect to the main wing and stowed in the main wing and extends along a wingspan direction of the main wing (2); and a gap increasing section (20, 30) provided at an end portion (11a) of the flap body (11) in an extending direction of the flap body, to increase a gap between the rear portion of the main wing (2) and a front portion of the flap body (11) in a state in which the flap body is deployed.
摘要:
A high-lift device (3) of a flight vehicle includes: a flap main body (11) provided at a trailing edge portion of a main wing (2) of the flight vehicle so as to be extracted from and be retracted in the trailing edge portion and extending in a wing span direction of the main wing (2); and a vortex suppressing portion (100, 200, 300, 400, 500, or 600) provided at a tip end portion of the flap main body (11) in a wing span direction of the flap main body (11) and configured to suppress a vortex rolling up from a lower surface of a tip end portion (11a) of the flap main body (11) to an upper surface of the tip end portion (11a).
摘要:
A high-lift device (3) comprises a flap body (11) which is provided at a rear portion of a main wing (2) which generates a lift for the air vehicle such that the flap body is deployed with respect to the main wing and stowed in the main wing and extends along a wingspan direction of the main wing (2); and a gap increasing section (20, 30) provided at an end portion (11a) of the flap body (11) in an extending direction of the flap body, to increase a gap between the rear portion of the main wing (2) and a front portion of the flap body (11) in a state in which the flap body is deployed.