Jet powered ducted fan convertiplane

Claim 1

IN AN AIRCRAFT HAVING A WING: A GENERALLY CIRCULAR DUCT EXTENDING VERTICALLY THROUGH SAID WING; A PAIR OF COUNTER-ROTATING, MULTI-BLADED FANS MOUNTED FOR FREE ROTATION AXIALLY IN SAID DUCT; A TURBINE RING FIXED TO THE PERIPHERY OF EACH OF SAID FANS AND CONCENTRIC THEREWITH; A PAIR OF JET ENGINES OPERATIVELY MOUNTED IN THE AIRCRAFT AND HAVING TAILPIPES DISPOSED LONGITUDINALLY FOR NORMAL REARWARD THRUST; A FIRST SCROLL HAVING AN INLET LEADING FROM ONE OF SAID TAILPIPES AND EXTENDICNG SUBSTANTIALLY TANGENTIALLY TO ONE OF SAID TURBINE RINGS, SAID FIRST SCROLL HAVING AN ELONGATED OUTLET EXTENDING AROUND A PORTION OF THE OUTER CIRCUMFERENCE OF SAID ONE TURBINE RING; A SECOND SCROLL HAVING AN INLET LEADING FROM THE OTHER OF SAID TAILPIPES AND EXTENDING IN A DIRECTION OPPOSITE TO THAT OF THE FIRST SCROLL; SAID SECOND SCROLL HAVING AN ELONGATED OUTLET EXTENDING AROUND A PORTION OF THE OUTER CIRCUMFERENCE OF THE OTHER OF SAID TURBINE RINGS; BAFFLE MEANS IN SAID TAILPIPES TO DIVERT EXHAUST GASES THEREFROM INTO THE RESPECTIVE SCROLLS, AND GUIDE MEANS IN SAID OUTLETS TO DIRECT THE GASES TO THE RESPECTIVE TURBINE RINGS; AND MEANS FOR CONTROLLING THE FLOW OF AIR THROUGH SAID DUCT.