The Rotax 535 is an

Austria Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ...

aircraft engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbin ...

, 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 Prod ...

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 headquarte ...

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 flig ...

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, (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''). Certification confirms that the aircraft of a new type intended for serial production is in compliance w ...

to JAR 22, 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 power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which re ...

, 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 ...

. It employs dual Bosch or

Ducati Ducati Motor Holding S.p.A () is an Italian motorcycle manufacturing company headquartered in Bologna, Italy. History Barely a month after the official liberation of Italy in 1944, SIATA announced its intention to sell this engine, called ...

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 United Kingdom, UK) is an aviation fuel used in aircraft with spark-ignited internal combustion engines. ''Avgas'' is distinguished from conventional gasoline (petrol) used in moto ...

. 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 *

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- prototype *

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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