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Utilizing Flight Data to Update Aeroelastic Stability Estimates (1997)

Lind, Rick ; Brenner, Marty

In: CASI

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Publication Date: 2019-07-13

Description: Stability analysis of high performance aircraft must account for errors in the system model. A method for computing flutter margins that incorporates flight data has been developed using robust stability theory. This paper considers applying this method to update flutter margins during a post-flight or on-line analysis. Areas of modeling uncertainty that arise when using flight data with this method are investigated. The amount of conservatism in the resulting flutter margins depends on the flight data sets used to update the model. Post-flight updates of flutter margins for an F/A-18 are presented along with a simulation of on-line updates during a flight test.

Keywords: Aircraft Stability and Control

Type: Atmospheric Flight Mechanics Conference; Aug 01, 1997; New Orleans, LA; United States

Format: text

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