Extensions of the Lift/Thrust Engine Principle in V/STOL Aircraft

Examples of jet lift aircraft powered by the diverse systems of the single lift/thrust turbofan and the multi-engined specialized lifting and propulsion engines are now flying. With the experience gained from these pioneering aircraft, it is appropriate to review the thermodynamic characteristicsrequired of engines for. future “vectored thrust,” low level, strike aircraft having supersonic capability. The relative merits of extreme forms of powerplant are discussed from the engine and powerplant designer's viewpoint and these are linked with a spectrum of aircraft that lies between these extremes of design.