Henri Coanda

(6-7-1886 to 11-25-1972)

The Coanda story (interview)

"I believed a more effective motor fence could be utilized by creating a vacuum in front of, or above the aircraft, into which the plane would be drawn. This is a natural phenomenon, demonstrated every time a tornado ravages the countryside" "a powerplant with not a single moving part"

"I wanted the vacuum above the surface, and under high pressure, to be derived from a circular motion of gases. In 1932, when I was first experimenting with this circular effect, I was producing as high as six tons of lifting power per square yard above the wing."

"I increased its power (ordinary pistol engine) by 53.5 percent!" He modified the exhaust system with a


Henri Coanda (1967)