NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login

Press Enter or click the Search button to begin your search.

Back to Results
Airplane automatic control force trimming device for asymmetric engine failuresThe difference in dynamic pressure in the propeller slipstreams as measured by sensors is divided by the freestream dynamic pressure generating a quantity proportional to the differential thrust coefficient. This quantity is used to command an electric trim motor to change the position of trim tab thereby retrimming the airplane to the new asymmetric power condition. The change in position of the trim tab produced by the electric trim motor is summed with the pilot's input to produce the actual trim tab position.
Document ID
19870011566
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Stewart, Eric C. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 13, 2013
Publication Date
March 10, 1987
Subject Category
Aircraft Stability And Control
Report/Patent Number
Patent Number: US-PATENT-4,648,569
Patent Application Number: US-PATENT-APPL-SN-790556
Patent Number: NASA-CASE-LAR-13280-1
Accession Number
87N20999
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,648,569|NASA-CASE-LAR-13280-1
Patent Application
US-PATENT-APPL-SN-790556

Related Records

IDRelationTitleN86-20397Superseded By
No Preview Available