Helicopter with coaxial counter-rotating dual rotors and no tail rotor
US5791592A · kind A · utility
48Cited by
10References
20Claims
0Family size
Inventors
Key dates
| Filing date | Jan 18, 1995 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Jan 18, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter having two engines driving a single rotating drive shaft on which are mounted two spaced counter-rotating coaxial rotors at the same speed and having a tail boom free of a tail rotor and supporting two horizontally spaced pairs of air foils for controlling the direction of yaw in flight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.