COMPUTATIONAL INVESTIGATION OF A PNEUMATIC FOREBODY FLOW-CONTROL CONCEPT

Citation
K. Gee et al., COMPUTATIONAL INVESTIGATION OF A PNEUMATIC FOREBODY FLOW-CONTROL CONCEPT, Journal of aircraft, 30(3), 1993, pp. 326-333
Citations number
NO
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Aerospace Engineering & Tecnology
Journal title
ISSN journal
0021-8669
Volume
30
Issue
3
Year of publication
1993
Pages
326 - 333
Database
ISI
SICI code
0021-8669(1993)30:3<326:CIOAPF>2.0.ZU;2-#
Abstract
The effectiveness of a tangential slot blowing concept for generating lateral control forces on an aircraft forebody is analyzed using compu tational fluid dynamics (CFD). The flow about a fighter forebody is co mputed using a multiple-zone, thin-layer Navier-Stokes code. Tangentia l slot blowing is modeled by the use of an actuator plane. The effects of slot location and slot length on the efficiency of the system are analyzed. Results of the study indicates that placement of the slot ne ar the nose of the aircraft greatly enhances the efficiency of the sys tem, whereas, the length and circumferential location of the slot are of secondary importance. Efficiency is defined by the amount of side f orce or yawing moment obtained per unit blowing coefficient. The effec t of sideslip on the system is also analyzed. The system is able to ge nerate incremental changes in forces and moments in flow with a sidesl ip angle of 10 deg comparable to those obtained at zero sideslip. Thes e results are used to determine a baseline configuration for an experi mental study of the tangential slot blowing concept.