Evaluation of methods for determination of drag polars of unstable/augmented aircraft AIAA Paper 2000-0501

Girija, G and Basappa, K and Raol, JR and Madhuranath, P (2000) Evaluation of methods for determination of drag polars of unstable/augmented aircraft AIAA Paper 2000-0501. In: 38th Aerospace Sciences Meeting amp; Exhibit, 1 O-1 3 January 2000, Reno, NV.

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    Abstract

    Several parameter/state estimation methods for determination of drag polars from flight data are described and evaluated for unstable/augmented aircraft. The model-based and non-model-based approaches are considered. The roller coaster and wind-up-turn maneuver dynamic response data are generated in a flight simulator at various flight conditions and the typical performance results are presented. A novel approach to estimate the drag polar has been considered and evaluated. It is found that the non-model-based approaches perform better than the model-based approaches. Classically the model-based approaches have been used for determination of drag polars. The merits of the non-model-based approach are that it does not require specifying the detailed model of the aerodynamic coefficients and it can be suitably used for on-line estimation of drag polars from the flight data.

    Item Type: Conference or Workshop Item (Paper)
    Uncontrolled Keywords: Aircraft Stability State Estimation;Drag;Aircraft Performance;Fight Teststaylor Seriesaerodynamic Coefficientleast Squares Method
    Subjects: AERONAUTICS > Aeronautics (General)
    Division/Department: Flight Mechanics and Control Division, Flight Mechanics and Control Division, Flight Mechanics and Control Division, Flight Mechanics and Control Division
    Depositing User: Mr. N A
    Date Deposited: 29 Oct 2007
    Last Modified: 24 May 2010 09:39
    URI: http://nal-ir.nal.res.in/id/eprint/996

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