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The implementation and operation of a variable-response electronic throttle control system for a TF-104G aircraftDuring some flight programs, researchers have encountered problems in the throttle response characteristics of high-performance aircraft. To study and to help solve these problems, the National Aeronautics and Space Administration Ames Research Center's Dryden Flight Research Facility (Ames-Dryden) conducted a study using a TF-104G airplane modified with a variable-response electronic throttle control system. Ames-Dryden investigated the effects of different variables on engine response and handling qualities. The system provided transport delay, lead and lag filters, second-order lags, command rate and position limits, and variable gain between the pilot's throttle command and the engine fuel controller. These variables could be tested individually or in combination. Ten research flights were flown to gather data on engine response and to obtain pilot ratings of the various system configurations. The results should provide design criteria for engine-response characteristics. The variable-response throttle components and how they were installed in the TF-104G aircraft are described. How the variable-response throttle was used in flight and some of the results of using this system are discussed.
Document ID
19900010770
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Neal, Bradford (NASA Hugh L. Dryden Flight Research Facility Edwards, CA, United States)
Sengupta, Upal (NASA Hugh L. Dryden Flight Research Facility Edwards, CA, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1989
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA-TM-101696
NAS 1.15:101696
H-1542
Accession Number
90N20086
Funding Number(s)
PROJECT: RTOP 307-07-00
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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