Accession Number:

ADA071466

Title:

Longitudinal Aerodynamics Extracted from Flight Tests Using a Parameter Estimation Method.

Descriptive Note:

Aerodynamics note,

Corporate Author:

AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)

Personal Author(s):

Report Date:

1978-10-01

Pagination or Media Count:

36.0

Abstract:

Flight data from a 60 deg. delta wing aircraft have been analysed using a modified Newton-Raphson parameter estimation procedure. The model equations used for the analysis were extended to account for incidence vane errors and non-linearities in the pitching moment curves. Longitudinal derivatives extracted from the data have been compared with wind tunnel measurements and some theoretical estimates and areas of agreement and disagreement identified. The results demonstrate the usefulness of the parameter identification method not only for the validation of aircraft mathematical models and for checking flight results against wind tunnel data but also for obtaining aerodynamic data not easily available through other means. Author

Subject Categories:

  • Aerodynamics
  • Aircraft
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE