Draft:Reduced take-off and landing

Reduced take-off and landing is a comparatively new concept, reduced take-off and landing, or RTOL, has been evolved as an intermediate stage for large aircraft unable to achieve economic vertical or short take-off and landing within the limits of existing technology. Reduced take-off can be achieved by modifications to existing designs, with additional flaps and slots and jetstream ducting, or by variations on existing design concepts, instead of the radical changes necessary for STOL. In addition, RTOL holds the possibility of being allied with quiet take-off and landing, or QTOL in a way which has not been possible with V/STOL.