Que interesante aparato, vi el video y me llamó la atención que no es el típico "autogiro" ya que el rotor principal es pre-girado para despegar de manera casi vertical, y ya volando el mismo queda girando libre.-
Air & Space 18A
Role-----------------Autogyro
Manufacturer-------Air and Space Manufacturing, Inc.
Designer------------Gilbert Devore
First flight--------- 1964
Number built------.68
[YOUTUBE]hI5cAgWmShU[/YOUTUBE]
https://en.wikipedia.org/wiki/Air_&_Space_18ADESIGN: The 18A is a metal semi-monocoque construction with a tube frame supporting the transmission and engine. It has an enclosed cockpit with two tandem seats and a fixed tricycle landing gear. A 180 hp (134 kW) Lycoming O-360-A1D horizontally opposed carbureted engine is fitted behind the cockpit driving a two or three-bladed Hartzell pusher propeller. A three-bladed fully articulated rotor is mounted above and behind the cockpit. A hydraulically actuated clutch and a transmission are provided to permit the engine to drive the rotor briefly while on the ground to obtain the rotor speed necessary for takeoff. The clutch is released immediately prior to takeoff, and the rotor is not engine-driven in flight. The rotor can be pre-spun up to 370 rpm on the ground with the blades in flat pitch to store energy for take-off (flight rpm typically being in the low 200s). When the blades are released to flight pitch the aircraft can perform a "jump" or zero-roll take-off (aircraft load and density altitude permitting) using the excess energy in the blades. (fuente: wikipedia)