The AeroTwin AT972T is an American

aircraft engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years ma ...

, designed and produced by the AeroTwin Motors Corporation, a subsidiary of the AirScooter Corporation of

Henderson, Nevada Henderson is a city in Clark County, Nevada, United States, about southeast of downtown Las Vegas. It is the second largest city in Nevada, after Las Vegas, with an estimated population of 320,189 in 2019. The city is part of the Las Vegas Val ...

for use in

ultralight aircraft Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and Aircraft flight control system, conventional three-a ...

, in particular their

AirScooter AirScooter Corporation (), is a defunct American aircraft manufacturer that was based in Henderson, Nevada. It designed and intended to manufacture an ultralight helicopter, with a coaxial rotor configuration. The company was founded in early 20 ...

helicopter design.Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', pages 256-257. Flying Pages Europe SARL, 2015. The company seems to have been founded about 2002 and gone out of business in 2012 and production ended.

Design and development

The engine is a twin-cylinder

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 direct ...

, in-line, displacement, air and oil-cooled, gasoline engine design, with either a poly V belt or mechanical gearbox

reduction drive A reduction drive is a mechanical device to shift rotational speed. A planetary reduction drive is a small scale version using ball bearings in an epicyclic arrangement instead of toothed gears. Reduction drives are used in engines of all kinds ...

with a clutch and reduction ratios of 1.88, 2.00 and 2.14:1. It employs dual

electronic ignition An ignition system generates a spark or heats an electrode to a high temperature to ignite a fuel-air mixture in spark ignition internal combustion engines, oil-fired and gas-fired boilers, rocket engines, etc. The widest application for spark i ...

and produces at 4200 rpm, with a

compression ratio The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values. A fundamental specification for such engines, it is measured two ways: the stati ...

of 8.0:1.

Specifications (AT972T)

References

{{Reflist

External links

Official website archives
on Archive.org AeroTwin aircraft engines Air-cooled aircraft piston engines 2000s aircraft piston engines

Design and development

Specifications (AT972T)

See also

References

External links