The Mistral G-300 is a Wankel rotary engine being developed by the Mistral Engine Company

Mistral Engine Company

Mistral Engine Company is a Swiss firm formed in 2001 with the purpose of developing engines for light aircraft and helicopters. Its headquarters is in Geneva, Switzerland...

 for use in light aircraft and helicopters. It is currently being readied for certification

Type certificate

A Type Certificate, is awarded by aviation regulating bodies to aerospace manufacturers after it has been established that the particular design of a civil aircraft, engine, or propeller has fulfilled the regulating bodies' current prevailing airworthiness requirements for the safe conduct of...

 by the United States FAA

Federal Aviation Administration

The Federal Aviation Administration is the national aviation authority of the United States. An agency of the United States Department of Transportation, it has authority to regulate and oversee all aspects of civil aviation in the U.S...

.

Design details

The G-300 uses gasoline

Gasoline

Gasoline , or petrol , is a toxic, translucent, petroleum-derived liquid that is primarily used as a fuel in internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. Some gasolines also contain...

 as fuel. A similar design using kerosene

Kerosene

Kerosene, sometimes spelled kerosine in scientific and industrial usage, also known as paraffin or paraffin oil in the United Kingdom, Hong Kong, Ireland and South Africa, is a combustible hydrocarbon liquid. The name is derived from Greek keros...

 or jet fuel

Jet fuel

Jet fuel is a type of aviation fuel designed for use in aircraft powered by gas-turbine engines. It is clear to straw-colored in appearance. The most commonly used fuels for commercial aviation are Jet A and Jet A-1 which are produced to a standardized international specification...

 is concurrently under development. It will be designated the K-300.

The G-300 uses three rotating combustion chambers. It uses a liquid-cooling system, full electronic control (dubbed Digital Engine Management or DEM), and engine speed is reduced (2.8235:1) through a front-mounted planetary reduction drive. Maximum output speed is 2,300 revolutions/minute.

In normally aspirated configuration the G-300 is rated at 300 hp (224 kW). With optional turbocharging it is rated at 360 hp (269 kW).