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A simple dynamic engine model for use in a real-time aircraft simulation with thrust vectoringA simple dynamic engine model was developed at the NASA Ames Research Center, Dryden Flight Research Facility, for use in thrust vectoring control law development and real-time aircraft simulation. The simple dynamic engine model of the F404-GE-400 engine (General Electric, Lynn, Massachusetts) operates within the aircraft simulator. It was developed using tabular data generated from a complete nonlinear dynamic engine model supplied by the manufacturer. Engine dynamics were simulated using a throttle rate limiter and low-pass filter. Included is a description of a method to account for axial thrust loss resulting from thrust vectoring. In addition, the development of the simple dynamic engine model and its incorporation into the F-18 high alpha research vehicle (HARV) thrust vectoring simulation. The simple dynamic engine model was evaluated at Mach 0.2, 35,000 ft altitude and at Mach 0.7, 35,000 ft altitude. The simple dynamic engine model is within 3 percent of the steady state response, and within 25 percent of the transient response of the complete nonlinear dynamic engine model.
Document ID
19910009766
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Johnson, Steven A. (NASA Hugh L. Dryden Flight Research Facility Edwards, CA, United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1990
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
H-1643
AIAA PAPER 90-2166
NAS 1.15:4240
NASA-TM-4240
Meeting Information
Meeting: AIAA/SAE/ASME/ASEE Joint Propulsion Conference
Location: Orlando, FL
Country: United States
Start Date: July 16, 1990
End Date: July 18, 1990
Accession Number
91N19079
Funding Number(s)
PROJECT: RTOP 533-02-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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