Heavier than air flying apparatus with a plurality of airscrews

Claim 1

A FLYING VEHICLE HAVING A CENTRAL BODY PORTION WITH A FORWARD END, A CENTRAL PLANE PASSING THROUGH A LONGITUDINAL AXIS OF SAID BODY, AND A VEHICLE CENTER OF GRAVITY, A PAIR OF PROPULSIVE POWERPLANTS ONE MOUNTED ON EACH SIDE OF SAID VEHICLE ADJACENT TO SAID FORWARD END ONE SEPARATE FROM THE OTHER, WITH EACH OF SAID POWERPLANTS HAVING A POWERPLANT LONGITUDINAL AXIS OUTWARDLY AND FORWARDLY ORIENTED WITH RESPECT TO SAID CENTRAL PLANE AT AN OUTWARD ANGLE, AN UPSTREAM POWERPLANT END PORTION LOCATED AHEAD OF SAID CENTER OF GRAVITY AT A DISTANCE APPROXIMATELY AT LEAST AS GREAT AS THE PERPENDICULAR DISTANCE BETWEEN SAID POWERPLANT UPSTREAM END PORTION AND SAID CENTRAL PLANE AND AN OPERATIVE REGIME IN WHICH FLUID IS IMPELLED REARWARDLY AND INWARDLY FROM SAID POWERPLANT ALONG SAID LONGITUDINAL AXIS TOWARD SAID CENTRAL PLANE DURING WHICH REGIME AW LATERAL FORCE PERPENDICULAR TO SAID LONGITUDINAL AXIS, APPROXIMATELY HORIZONTAL, AND AWAY FROM SAID CENTRAL PLANE IS DEVELOPED AT SAID FRONT END OF EACH OF SAID POWERPLANTS WITH SAID FORCE HAVING A LINE OF ACTION PASSING WELL AHEAD OF SAID CENTER OF GRAVITY; SAID POWERPLANTS AND VEHICLE HAVING AS AN INHERENT CHARACTERISTIC OF STABILITY THAT WHEN IN NORMAL SIMULTANEOUS OPERATION THE POWERPLANTS HAVE THEIR RESPECTIVE LATERAL FORCES SUBSTANTIALLY CANCELLING EACH OTHER, AND WHEN ONE OF SAID POWERPLANTS CEASES OPERATION THE LATERAL FORCE DEVELOPED BY THE REMAINING OPERATIVE ONE OF SAID POWERPLANTS IMMEDIATELY PRODUCES A TURNING COUPLE TENDING TO ROTATE SAID VEHICLE ABOUT A VERTICAL AXIS THROUGH SAID CENTER OF GRAVITY TO THE SIDE OF SID OPERATIVE POWERPLANT.