This light aircraft crash avoidance system performs what previous such
systems perform, but with much less system weight, much less cost and much
less expenditure of electrical energy. In this system, air enters openings
or windows in front of concentric tubing and leaves through openings
facing vertically downward, thus giving lift to an aircraft's wing, where
needed. Unlike other designs, this one requires no high-pressure air tanks
to provide high pressure, high-velocity air to air valves. The valves
depend upon the forward motion of the aircraft to provide high velocity
air and lift. Two different prime movers are suggested for rotating the
outer tubing for opening or closing the air valve, one being a d.c. motor
and the other a rotary solenoid, as the simpler one to implement. The
proposed design is for making any needed corrections to the aircraft's
roll angle and for providing buoyancy to the entire aircraft when making a
landing. A side benefit for this design is the ability for the aircraft's
engine to save fuel on take-off and in flight, because of the added lift
provided by the tubular air valves in their open positions. Openings or
air outlets facing downward may be fitted with circular collars to assist
in directing the high velocity out-flow air downward.
