The Rotax 535 is an

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

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 many ...

, that was designed and produced by

Rotax Rotax is the brand name for a range of internal combustion engines developed and manufactured by the Austrian company BRP-Rotax GmbH & Co KG (until 2016 BRP-Powertrain GmbH & Co. KG), in turn owned by the Canadian Bombardier Recreational Product ...

Gunskirchen Gunskirchen is a town in the Austrian state of Upper Austria. Geography Gunskirchen lies in the Hausruckviertel. About 11 percent of the municipality is forest, and 78 percent is farmland. Internal combustion engine maker Rotax has been headquart ...

for use in

motor glider A motor glider is a fixed-wing aircraft that can be flown with or without engine power. The FAI Gliding Commission Sporting Code definition is: a fixed-wing aerodyne equipped with a means of propulsion (MoP), capable of sustained soaring flight ...

European Aviation Safety Agency The European Union Aviation Safety Agency (EASA) is an agency of the European Union (EU) with responsibility for civil aviation safety. It carries out certification, regulation and standardisation and also performs investigation and monitorin ...

, (26 February 2010)
Type Certificate Data Sheet Number: E.209
retrieved 24 September 2015 The first application for

type certification A type certificate signifies the airworthiness of a particular category of aircraft, according to its manufacturing design (''type design''). It confirms that the aircraft of a new type intended for serial production, is in compliance with applica ...

JAR 22 The Joint Aviation Requirements (JAR) were a set of common comprehensive and detailed aviation requirement issued by the Joint Aviation Authorities, intended to minimise Type Certification problems on joint ventures, and also to facilitate the expo ...

, Appendix H, was made on 29 June 1982 and the first certification was granted on 27 April 1983. It is out of production and is no longer offered for sale by Rotax.

Design and development

The Rotax 535 is a twin cylinder

two-stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a Thermodynamic power cycle, power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being comple ...

, in-line, displacement, liquid-cooled, gasoline engine design, with a 3:1 belt

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 t ...

. It employs dual Bosch or

Ducati Ducati Motor Holding S.p.A. () is the motorcycle-manufacturing division of Italian company Ducati, headquartered in Bologna, Italy. The company is directly owned by Italian automotive manufacturer Lamborghini, whose German parent company is Au ...

magnetic high-voltage condenser ignition systems, one or two carburetors and produces a maximum of at 7200 rpm. It runs on 96 octane automotive gasoline or 100LL

avgas Avgas (aviation gasoline, also known as aviation spirit in the UK) is an aviation fuel used in aircraft with spark-ignited internal combustion engines. ''Avgas'' is distinguished from conventional gasoline (petrol) used in motor vehicles, w ...

. Lubrication is 50:1 super two stroke oil premixed with the fuel.

Variants

;535A :Equipped with twin Tillotson HR or Mikuni BN 38 diaphragm carburetors and a Mikuni DF 44 diaphragm fuel pump. Produces at 7200 rpm. First certified on 27 April 1983. ;535B :Equipped with twin Tillotson HR or Mikuni BN 38 diaphragm carburetors and a Mikuni DF 44 diaphragm fuel pump. Produces at 7200 rpm. First certified on 27 April 1983. ;535C :Equipped with one Mikuni BN 38 diaphragm carburetor and a Mikuni DF 44 diaphragm fuel pump. Produces at 7200 rpm. First certified on 12 June 1987.

Applications

* Glaser-Dirks DG-500M *

Rolladen-Schneider LS9 The Rolladen-Schneider LS9 is an 18 metre single-seat motor glider launched in 2000 by Rolladen-Schneider. Production ended after just 10 gliders were built, when Rolladen-Schneider went into receivership. Development The LS9 was the sole se ...

- prototype *

Schempp-Hirth Janus The Schempp-Hirth Janus is a high performance two-seat Glider (sailplane), glider that was built by Schempp-Hirth, Schempp-Hirth GmbH. It was the first high-performance two-seater. Design and development The design was by Dipl-Ing Klaus Holigha ...

Schempp-Hirth Nimbus-4 The Schempp-Hirth Nimbus-4 is a family of high-performance FAI Open Class gliders designed by Klaus Holighaus and manufactured by Schempp-Hirth Flugzeugbau GmbH in Kirchheim, Germany. The Nimbus-4 first flew in 1990. Design and development The ...

Schleicher ASH 25 The ASH 25 is a two-seater high performance Open Class glider manufactured by Alexander Schleicher from 1986 until September 2008, originally with a 25-metre wingspan. It was superseded in production by the ASH 30. Design and development In ...

Specifications (535A)

References

External links

Photo of a Rotax 535 engine
{{Rotax aeroengines Rotax engines Two-stroke aircraft piston engines Air-cooled aircraft piston engines 1980s aircraft piston engines