NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Identification of aerodynamic indicial functions using flight dataIt is pointed out that the use of indicial function representation provides a model superior to the aerodynamic derivative model. Specific derivatives can be approximated from the indicial models. The model can also be used to compute equivalent stability and control parameters not usually available from flight data. It is shown that derivatives regarding the angle-of-attack and the side slip angle can be derived directly from the indicial functions without any identifiability problem. Attention is given to the pitch moment coefficient, linear indicial function representation, the identification problem for the pitch moment equation, the identifiability of linear systems, parametric representations of the indicial functions, an identification technique, angle-of-attack and pitch rate dynamics in the pitch plane, multivariate linear models, nonlinear aerodynamic indicial functions, measurement system accuracy, and poststall and spin-entry data from a scaled research vehicle.
Document ID
19820055601
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gupta, N. K.
(Integrated Systems, Inc. Palo Alto, CA, United States)
Iliff, K. W.
(NASA Flight Research Center Edwards, CA, United States)
Date Acquired
August 10, 2013
Publication Date
August 1, 1982
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 82-1375
Meeting Information
Meeting: Atmospheric Flight Mechanics Conference
Location: San Diego, CA
Start Date: August 9, 1982
End Date: August 11, 1982
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
82A39136
Funding Number(s)
CONTRACT_GRANT: NAS4-2907
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available