F/A-18 1/9th Scale Model Tail Buffet Measurements
Abstract
Wind-tunnel tests have been carried out on a 1/9th scale model of the F/A-18 at high angles of attack to investigate the characteristics of tail buffet due to bursting of the wing leading edge extension (LEX) vortices. The tests were carried out at the Aeronautical Research Laboratory low speed wind- tunnel facility and form part of a collaborative activity with NASA Ames Research Center, organised by The Technical Cooperative Programme (TTCP). Information from the programme will be used in the planning of similar collaborative tests, to be carried out at NASA Ames, on a full scale aircraft. The programme covered the measurement of unsteady pressures and fin vibration for cases with and without the wing LEX fences, designed by McDonnell Aircraft Company, fitted. Fourier transform methods have been used to analyse the unsteady data, and information on the spatial and temporal content of the vortex burst pressure field has been obtained. Flow visualization of the vortex behaviour was carried out using smoke and a laser light sheet technique.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1991
- Accession Number
- ADA242882
Entities
People
- C. A. Martin
- J. Ross
- L. A. Meyn
- L. D. Maclaren
- M. K. Glaister