Patent ID: 8840058
Filing Date: 2014-09-23
Classification: B64C

Abstract:
1. A rotary aircraft, comprising: a fuselage; an engine carried by the fuselage; a main rotor rotatably attached to the engine; and a tail boom attached to and extending from the fuselage, the tail boom having: wherein the engine rotates the main rotor, thereby creating rotorwash and a fuselage torque; wherein the rotorwash flows around the first side surface and the second side surface of the tail boom, resulting in a high-pressure region forming near the first side surface and resulting in a low-pressure region forming near the second side surface; wherein the pressure difference between the high-pressure region and the low-pressure region causes the tail boom to move towards the low-pressure region, resulting in a lateral force opposing the fuselage torque; and wherein the tail boom is rotatably attached to the fuselage.