Accession Number : ADA310890

Title :   Structures and Materials Panel Working Group 27 on Evaluation of Loads from Operational Flight Maneuvers. Final Working Group Report (l'Evaluation des Charges Resultant des Manoeuvres en vol).

Corporate Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)

PDF Url : ADA310890

Report Date : APR 1996

Pagination or Media Count : 123

Abstract : This AGARD Advisory Report describes an evaluation of a method to derive loads from operational flight maneuvers. The basic assumption of this method is that all operational maneuvers performed in service can be verified as a set of Standard Maneuvers (normalized parameter time histories for each independent maneuver type). The normalization procedure has been developed and applied to the data base for 3 GAF-aircraft in operation and one aircraft in development. The verification of Standard Maneuvers is based on recordings of relevant maneuver parameters in service and for new tactics/missions on special flights or simulations. For the verification process, data from the USAF and CF maneuver types have been identified and normalized. The comparison of the normalized maneuvers for several aircraft types leads to similar parameter time histories for the same maneuver type. The study has demonstrated for two Standard Maneuver types that load relevant parameters can be derived with sufficient accuracy for load calculations. Standard maneuvers derived from F- 16 data were reconstituted using F-18 control parameters. An F-18 loads calculation process has been verified against flight test data. A comparison of the input parameters and the resulting loads was carried out which showed reasonable correlation. The initial evaluation of the concept done by WG27 has demonstrated the feasibility of determining loads from operational flight maneuvers. Further work is necessary to expand the scope of the WG27 investigation and to confirm the WG27 conclusion.

Descriptors :   *FLIGHT MANEUVERS, DATA BASES, INPUT, FLIGHT TESTING, EXPERIMENTAL DATA, COMPUTATIONS, AIRCRAFT, VERIFICATION, PARAMETERS, LOADS(FORCES), ACCURACY, TIME, MISSIONS, HISTORY, RECORDING SYSTEMS, NORMALIZING(STATISTICS), MILITARY TACTICS.

Subject Categories : Military Aircraft Operations

Distribution Statement : APPROVED FOR PUBLIC RELEASE