Aerodynamic control using forebody blowing and suctionAerodynamic control using pneumatic forebody flow control was studied. Three methods of control were investigated: (1) blowing from a localized jet, (2) blowing from a slot, and (3) surface suction. Flow visualization and yawing moment measurements were performed on F/A-18 models in a water tunnel. The results show that all the methods were effective in controlling the forebody flow over a wide range of angles of attack and sideslip. The advantages and limitations of each of the control methods were discussed. The experiments suggested that all the control methods work basically on the principle of separation control. Based on the results of the water tunnel tests, the blowing or suction mass flow requirements appear to be within the limits of typical engine-bleed available from a modern fighter engine.
Document ID
19910034764
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ng, T. Terry (Eidetics International, Inc. Torrance, CA, United States)
Malcolm, Gerald N. (Eidetics International, Inc. Torrance, CA, United States)