Compact co-axial rotor system for a rotary wing aircraft and...

Details Compact co-axial rotor system for a rotary wing aircraft and... Compact co-axial rotor system for a rotary wing aircraft and...

2006-08-01

2006-08-01

Poon, Peter M. (Department: 3643)

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

C244S017230, C416S128000, C416S033000

Reexamination Certificate

active

07083142

ABSTRACT:
A dual, counter rotating, coaxial rotor system provides an upper and lower rotor system, with a reduced axial rotor separation distance along a common axis by way of rotor tip position sensing and rotor position controls to avoid tip contact.

REFERENCES:
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patent: 6311924 (2001-11-01), Ferrer
patent: 2005/0067527 (2005-03-01), Peterson

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