Show novel brake for airplanes 0 v A J E carroll of los angeles inventor with his new airplane brake it I 1 includes a small motor mounted in the center of the propeller to be controlled by the pilot from a button on the control stick the angle of the propeller blades may be changed at the will of uie the aviator and when at their extreme reverse pitch they will push the air instead of drawing it back an aviator landing a can reverse the propeller and stop the plane in twice its on lin length according to the inventor nho says that the ability to control the pitch of the blades will also be invaluable when the plane strikes aw air pockets or rarefied air |