Discrete Sweeping Jets as Tools for Improving the Performance of the V-22

Autor:	Rene Woszidlo, Philipp Tewes, Roman Seele, Nathaniel J. Lucas, Israel Wygnanski, Michael A. McVeigh
Rok vydání:	2009
Předmět:	Lift-to-drag ratio Airfoil Physics Lift coefficient Flow control (fluid) Wing Drag Aerospace Engineering Mechanics Vortex generator Sweeping jet actuators Simulation
Zdroj:	Journal of Aircraft. 46:2098-2106
ISSN:	1533-3868 0021-8669
Popis:	Experiments aimed at delaying flow separation through discrete jets pointing in the direction of streaming and sweeping side to side along the span were conducted on a V-22 airfoil with and without deflected trailing-edge flaps. The results indicated substantial drag reduction and lift increase at moderately low inputs of mass and momentum. Additional experiments were carried out on a semispan V-22 wing/nacelle combination, and they too provided an increase in lift-to-drag ratio L/D of approximately 60% (although active flow control was applied to the wing only). The effectiveness of the sweeping jets on reducing the download force acting on a V-22 full-span powered model in hover was also examined. A 29% reduction in download was realized using the embedded sweeping jets, corresponding approximately to a 2000 1b increase in hover lift.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3048bccfde0782539072a22c9f59ba13 https://doi.org/10.2514/1.43663 Zobrazit plný text záznamu