International Journal of Aerospace System Engineering

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Quasi Steady Stall Modelling of Aircraft Using Least-Square Method

  • Verma, Hari Om (Department of Aerospace Engineering, IIT Kharagpur) ;
  • Peyada, N.K. (Department of Aerospace Engineering, IIT Kharagpur)
  • Received : 2018.10.13
  • Accepted : 2019.12.28
  • Published : 2020.06.30
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Abstract

Quasi steady stall is a phenomenon to characterize the aerodynamic behavior of aircraft at high angle of attack region. Generally, it is exercised from a steady state level flight to stall and its recovery to the initial flight in a calm weather. For a theoretical study, such maneuver is demonstrated in the form of aerodynamic model which consists of aircraft's stability and control derivatives. The current research paper is focused on the appropriate selection of aerodynamic model for the maneuver and estimation of the unknown model coefficients using least-square method. The statistical accuracy of the estimated parameters is presented in terms of standard deviations. Finally, the validation has been presented by comparing the measured data to the simulated data from different models.

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