Method and apparatus for minimizing the noise emitted by a...

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Aeronautical vehicle

Reexamination Certificate

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C701S002000, C701S004000, C701S007000, C701S008000, C701S015000, C701S016000, C701S018000, C244S017270, C244S00100R, C244S054000

Reexamination Certificate

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07496433

ABSTRACT:
The method includes a preliminary period in which a reference rotorcraft is used that corresponds to a rotorcraft of a particular type, with a series of noise measurements being performed on said rotorcraft (1) in flight using noise sensors (C) disposed on said reference rotorcraft, and with operating domains being determined for the reference rotorcraft in which noise is less than a maximum noise level. Thereafter, the operating point without wind and operating domains with wind are subsequently determined for a rotorcraft of the particular type on the basis of operating domains for the reference rotorcraft.

REFERENCES:
patent: 0 945 841 (1999-09-01), None
Patent Abstracts of Japan vol. 1998, No. 01, Jan. 30, 1998 & JP 09 254897 A Sep. 30, 1997, abrege; figures & JP 02 736045 B2 Apr. 2, 1998.
Patent Abstracts of Japan vol. 018, No. 569 (M-1695), Oct. 31, 1994 & JP 06 206594 A (Mitsubishi Heavy Ind Ltd), Jul. 26, 1994 abrege; figures.

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