The Amax Double Eagle TT is an Australian

autogyro An autogyro (from Greek and , "self-turning"), also known as a ''gyroplane'', is a type of rotorcraft that uses an unpowered rotor in free autorotation to develop lift. Forward thrust is provided independently, by an engine-driven propeller. Whi ...

that was designed and produced by

Amax Engineering Amax Engineering was an Australian aircraft manufacturer based in Donvale, Victoria, a suburb of Melbourne. When it was in business, the company specialized in the design and manufacture of kit aircraft for amateur construction. The company de ...

Donvale, Victoria Donvale is a suburb of Melbourne, Victoria, Australia, east of Melbourne's Central Business District, located within the City of Manningham local government area. It is a leafy and peaceful suburb, with the side west of Springvale Road is des ...

in the late 1990s. Now out of production, when it was available the aircraft was supplied as a kit for amateur construction.Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition'', page 317. BAI Communications, 15 July 1998. The "TT" designation indicates "Tall Tail". The aircraft has higher landing gear, allowing the engine to be placed on the vertical

center of gravity In physics, the center of mass of a distribution of mass in space (sometimes referred to as the balance point) is the unique point where the weight function, weighted relative position (vector), position of the distributed mass sums to zero. Thi ...

, 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 Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction. The original use of the term in English was in ''tandem harness'', which is used for two ...

open cockpit without a windshield,

tricycle landing gear Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', arranged in a tricycle fashion. The tricycle arrangement has a single nose wheel in the front, and two or more main wheels slightly aft of the center of gravity. Tricycle g ...

with

wheel pants An aircraft fairing is a structure whose primary function is to produce a smooth outline and reduce drag.Crane, Dale: ''Dictionary of Aeronautical Terms, Third Edition'', page 206. Aviation Supplies & Academics Inc, Newcastle Washington, 1997. ...

and a four-cylinder, liquid-cooled,

four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...

, single-ignition Subaru EA82

automotive engine , there were a wide variety of propulsion systems available or potentially available for automobiles and other vehicles. Options included internal combustion engines fueled by petrol, diesel, propane, or natural gas; hybrid vehicles, plug-in hy ...

pusher configuration In an aircraft with a pusher configuration (as opposed to a tractor configuration), the propeller(s) are mounted behind their respective engine(s). Since a pusher propeller is mounted behind the engine, the drive shaft is in compression in nor ...

. The aircraft

fuselage The fuselage (; from the French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds crew, passengers, or cargo. In single-engine aircraft, it will usually contain an engine as well, although in some amphibious aircraft t ...

is made from welded

4130 steel 41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common ...

tubing, with some aluminum parts. Its two-bladed rotor has a diameter of . The aircraft has a typical empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload for the pilot, passengers and baggage is . The standard day, sea level, no wind, take off with a engine is and the landing roll is . The manufacturer estimates the construction time from the supplied kit as 100 hours.

Specifications (Double Eagle TT)

References

{{Amax Engineering aircraft Double Eagle TT 1990s Australian sport aircraft 1990s Australian ultralight aircraft Homebuilt aircraft Single-engined pusher autogyros

Design and development

Specifications (Double Eagle TT)

See also

References