Patent ID: 11866163
Assignee: PIASECKI AIRCRAFT CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 5:
6. The parking tail rotor apparatus of claim 4 wherein the tail rotor hub comprises a first hub and a second hub, each of the first and second hubs being configured for rotation, the first and second hubs being in a spaced-apart relation lateral to the rotary wing aircraft, the one or more tail rotor blades comprising a first blade and a second blade, the first blade being attached to the first hub and configured for rotation with the first hub, the second blade being attached to the second hub and being configured for rotation with the second hub, the apparatus further comprises a first counterweight and a second counterweight, the first counterweight being disposed on an opposing second side of the first hub from the first blade, the second counterweight being disposed on the opposing second side of the second hub from the second blade the relative wind force on the first blade and the second blade being greater than the relative wind force on the first counterweight and the second counterweight when the rotary wing aircraft is flying in the forward direction and the source of motive power is not rotating the first blade and the second blade, the relative wind force on the first blade and the second blade being sufficient to move the first blade and the second blade to the parked position.