Aircraft of large wing span

Claim 1

AN AIRCRAFT COMPRISING: A FUSELAGE; A WING STRUCTURE SECURED TO SAID FUSELAGE AND EXTENDING OUTWARDLY THEREFROM ON OPPOSITE SIDES OF SAID FUSELAGE, SAID WING STRUCTURE INCLUDING AT LEAST TWO VERTICALLY SPACED GENERALLY PARALLEL AIRFOILS HAVING SURFACES DEFINING AIR-FLOW DUCTS THROUGH SAID WING STRUCTURE AND BETWEEN SAID AIRFOILS ON EACH SIDE OF SAID FUSELAGE; A PLURALITY OF FORWARD-PROPULSION UNITS MOUNTED BETWEEN THE AIRFOILS ON EACH SIDE OF SAID FUSELAGE FOR INDUCING A FLOW OF AIR THROUGH SAID DUCTS DURING MOVEMENT OF SAID AIRCRAFT; AT LEAST ONE ENGINE NACELLE MOUNTED ON SAID WING STRUCTURE ON EACH SIDE OF SAID FUSELAGE AND REMOTE THEREFROM; FIRST MOTIVE MEANS INDIVIDUAL TO SAID FORWARD-PROPULSION UNITS AND CONNECTED THEREWITH FOR RESPECTIVELY DRIVING SAID UNITS; SECOND MOTIVE MEANS INDIVIDUAL TO SAID ENGINE NACELLES AND RESPECTIVELY CONNECTED WITH THE FORWARD-PROPULSION UNITS ON THE RESPECTIVE SIDE OF SAID FUSELAGE FOR JOINTLY DRIVING THEM, AT LEAST ONE OF SAID FIRST AND SECOND MOTIVE MEANS PRODUCING A HEATED FLUID; AND HEAT-EXCHANGING MEANS LYING ALONG AT LEAST ONE OF SAID SURFACES AND CONNECTED WITH SAID ONE OF SAID MOTIVE MEANS FOR RECEIVING SAID HEATED FLUID AND THEREBY HEATING SAID AIR FLOW.