Driving arrangement for land-, water- and aircraft

Claim 1

DRIVING ARRANGEMENT FOR CONVEYANCES OF THE TYPE PROPELLED IN A FLUID MEDIUM BY AT LEAST ONE FLUID STREAM WHICH MOVES WITH RESPECT TO THE FLUID MEDIUM, COMPRISING WING MEANS HAVING TRAILING EDGE MEANS; POWER PLANT MEANS ARRANGED TO PRODUCE AT LEAST ONE FLUID STREAM AND HAVING NOZZLE MEANS LOCATED CLOSE TO SAID TRAILING EDGE MEANS AND ARRANGED TO DISCHARGE SAID ONE FLUID STREAM IN A PREDETERMINED DIRECTION SO AS TO DRIVE THE CONVEYANCE IN A DIRECTION COUNTER TO SAID PREDETERMINED DIRECTION; UNDULATOR MEANS ARRANGED TO UNDULATE SAID ONE FLUID STREAM WHEREBY THE PROPULSIVE THRUST OF THE DRIVING ARRANGEMENT INCREASES; AND DEUNDULATOR MEANS LOCATED DOWNSTREAM OF SAID UNDULATOR MEANS AND AT LEAST PARTIALLY IN THE PATH OF THE UNDULATED FLUID STREAM, SAID DEUNDULATOR MEANS HAVING A PAIR OF SUBSTANTIALLY OPPOSED SIDES AGAINST WHICH THE UNDULATED FLUID STREAM IMPINGES ALTERNATIVELY WHEREBY THE FLUID STREAM IS DEUNDULATED AND THE PROPULSIVE THRUST OF THE DRIVING ARRANGEMENT INCREASES.