Propulsive anti-torque system for rotorcraft
US7731121B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2004 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Oct 23, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2027/8245
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotorcraft having an enhanced configuration in which a simple wing and a propulsive anti-torque system are combined is disclosed. The propulsive anti-torque system includes an anti-torque thruster system in which a variable pitch fan is installed internal to the tail boom of the rotorcraft and an anti-torque thruster nozzle is mounted at the extremity of the tail boom. The fan is driven directly from the main rotor drive. The configuration and location of the fan allows the primary exhaust from the engine to be mixed with the compressed air flow from the fan. The mixed air flow from the fan and the engine passes through the tail boom and out the thruster nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.