The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 24, 1998

Filed:

Dec. 20, 1995
Applicant:
Inventors:

Bryan S Cotton, Monroe, CT (US);

Don L Adams, Sr, Fairfield, CT (US);

Assignee:

Sikorsky Aircraft Corporation, Stratford, CT (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C / ; B64D / ;
U.S. Cl.
CPC ...
244180 ; 244190 ; 244195 ; 701-2 ; 701-5 ; 701-8 ; 701 11 ;
Abstract

A vertical performance limit compensator is provided for a rotary wing aircraft. The compensator modifies a vertical velocity command signal for the aircraft's autopilot. The vertical velocity command signal represents a desired vertical velocity for the aircraft, and results in an associated engine power demand. Existing engine power remaining beyond that required for level flight is excess engine power. An engine performance signal is provided as an indication of an engine power demand that exceeds the excess engine power. A compensated vertical velocity command signal having a magnitude lower than the vertical velocity command signal is provided in response to the vertical velocity command signal and the presence of the engine performance signal.


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