Pneumatic control of vortices on different F-16 forebodies using jets and slots

Dynamic manipulation of asymmetric forebody vortices to achieve linear control

“…In this case, it is presumed the primary vortex on the blowing side is displaced by the jet. Other aft-blowing nozzle designs were tested on a 6%-scale F/A-18 model , on a full-scale F/A-18 (Lanser and Meyn, 1994), and on a 10%-scale F-16 forward fuselage (Smith and Ng, 1994b). Again it was generally found that nozzles pointed 60 deg inboard was the best orientation.…”

“…Lanser and Meyn suggest that the necessity of locating a slot away from the forebody apex may be due to a diminishing Coanda effect in the vicinity of the apex where nose radii are smaller. Additional investigations of the technique were conducted on a 1/15-scale of a F-16 model (Lemay et al, 1992); a 6%-scale F/A-18 model ; a 10%-scale F-16 forward fuselage (Smith and Ng, 1994b); and on a 1/9-scale model representing a next-generation fighter, which featured a chined forebody (O'Rourke and Ralston, 1996).…”