Amax Double Eagle TT

The Amax Double Eagle TT is an Australian autogyro that was designed and produced by Amax Engineering of Donvale, Victoria in the late 1990s. Now out of production, when it was available the aircraft was supplied as a kit for amateur construction.

The "TT" designation indicates "Tall Tail". The aircraft has higher landing gear, allowing the engine to be placed on the vertical center of gravity, which eliminates pitch changes with throttle application.

Design and development
The Double Eagle TT was designed to comply with amateur-built aircraft rules. It features a single main rotor, a two-seats-in tandem open cockpit without a windshield, tricycle landing gear with wheel pants and a four-cylinder, liquid-cooled, four-stroke, single-ignition 150 hp Subaru EA82 automotive engine in pusher configuration.

The aircraft fuselage is made from welded 4130 steel tubing, with some aluminum parts. Its two-bladed rotor has a diameter of 30.00 ft. The aircraft has a typical empty weight of 575 lb and a gross weight of 1150 lb, giving a useful load of 575 lb. With full fuel of 12 u.s.gal the payload for the pilot, passengers and baggage is 503 lb.

The standard day, sea level, no wind, take off with a 150 hp engine is 200 ft and the landing roll is 10 ft.

The manufacturer estimates the construction time from the supplied kit as 100 hours.