Estimation Of Drag Polars From Flight Test Data Of TDI(SG), TD2(SG) And PV1(SG) Aircraft

Basappa, - and Jatinder, Singh (2004) Estimation Of Drag Polars From Flight Test Data Of TDI(SG), TD2(SG) And PV1(SG) Aircraft. Technical Report. NAL, Bangalore.

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    Abstract

    The Performance Maneuver Data Generated From LCA TD1(SG), TD2(SG) And PV1(SG) Test Flights Are Analyzed And Results Presented . Comparative Plots Of The Drag Polars Show The LCA Versions To Be Aerodynamically Similar. Compared To The Estimated Drag For Zero Slat Configuration, The Drag For Auto Or Full Slat Configurations Is Observed To Be Less. Results Show That Drag Increases With Increase In Mach Number, But With Change In Altitude,There Is No Significant Change In The Estimated Drag . Furthermore, Compared To The Wind Tunnel Predicted Value Of Zero-Lift Drag,The Estimated Zero-Lift Drag Is Observed To Be Lower For Flights With M<1 And Higher For Flights With M>1.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Flight Data; Stability and Control Derivatives; Estimation; SOEM Drag Polar.
    Subjects: ASTRONAUTICS > Astronautics (General)
    Division/Department: Flight Mechanics and Control Division, Flight Mechanics and Control Division
    Depositing User: M/S ICAST NAL
    Date Deposited: 06 Aug 2012 10:33
    Last Modified: 06 Aug 2012 10:33
    URI: http://nal-ir.nal.res.in/id/eprint/10711

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