Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8380365 | Method and a system for determining and indicating a sound nuisance level outside an aircraft | — | 2013-02-19 |
| 8061962 | Method of optimizing a ducted anti-torque rotor of a rotorcraft, in particular a helicopter, to minimize acoustic annoyance, and a ducted anti-torque rotor obtained thereby | — | 2011-11-22 |
| 7959105 | Aircraft provided with a silent shrouded rotor | — | 2011-06-14 |
| 7779965 | Absorbent structure for attenuating noise particular by a rotor-generator noise, and a rotor duct including such a structure | — | 2010-08-24 |
| 7496433 | Method and apparatus for minimizing the noise emitted by a rotorcraft during take-off and landing | — | 2009-02-24 |
| 5634611 | Counter-torque device with rotor and flow straightening stator, both of which are ducted, and inclined flow-straightening vanes | Vincent J. L. Routhieau, Gilles Arnaud, Remy-Elian Arnaud | 1997-06-03 |
| 5588618 | Counter-torque device with rotor and flow-straightening stator, both of which are ducted, and phase modulation of the blades of the rotor, for helicopter | Vincent J. L. Routhieau, Gilles Arnaud, Remy-Elian Arnaud | 1996-12-31 |
| 5566907 | Counter-torque device with ducted rotor and phase modulation of the blades, for helicopter | Vincent J. L. Routhieau, Gilles Arnaud, Remy-Elian Arnaud | 1996-10-22 |