Unsteady Features of Jets in Lift and Cruise Modes for VTOL Aircraft 872359
Experiments were performed to simulate jet plume effects associated with VTOL aircraft in takeoff and cruise modes. A water facility was used to investigate the influence of inclination angle and separation distance on the three-dimensional fountain flowfield generated by two impinging jets operating at a jet Reynolds number of 250,000. Substantial differences in the flow features were observed for different spacings between the jets. Plume effects in cruise mode were simulated by a supersonic unheated jet parallel to a wall. Variation of the distance between the wall and the edge of the plume is shown to have a major controlling effect on the supersonic screech instability.
Citation: Kibens, V., Saripalli, K., Wlezien, R., and Kegelman, J., "Unsteady Features of Jets in Lift and Cruise Modes for VTOL Aircraft," SAE Technical Paper 872359, 1987, https://doi.org/10.4271/872359. Download Citation
Author(s):
V. Kibens, K. R. Saripalli, R. W. Wlezien, J. T. Kegelman
Affiliated:
McDonnell Douglas Research Laboratories
Pages: 10
Event:
SAE International Powered Lift Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1987 Transactions: Aerospace-V96-6, Proceedings of the International Powered Lift Conference-P-203
Related Topics:
Vertical take-off and landing (VTOL)
Aircraft
Entry, descent, and landing
Water
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