• Source: Rotax 535

The Rotax 535 is an Austrian aircraft engine, that was designed and produced by Rotax of Gunskirchen for use in motor gliders.
The first application for type certification 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, in-line, 521.2 cc (31.8 cu in) displacement, liquid-cooled, gasoline engine design, with a 3:1 belt reduction drive. It employs dual Bosch or Ducati magnetic high-voltage condenser ignition systems, one or two carburetors and produces a maximum of 60 hp (45 kW) at 7200 rpm. It runs on 96 octane automotive gasoline or 100LL avgas. 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 60 hp (45 kW) 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 55 hp (41 kW) 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 60 hp (45 kW) at 7200 rpm. First certified on 12 June 1987.




Applications


Glaser-Dirks DG-500M
Rolladen-Schneider LS9 - prototype
Schempp-Hirth Janus
Schempp-Hirth Nimbus-4
Schleicher ASH 25




Specifications (535A)


Data from EASA Type Certificate




= General characteristics

=
Type: Twin cylinder, two stroke aircraft engine
Bore: 72 mm (2.8 in)
Stroke: 64 mm (2.5 in)
Displacement: 521.2 cc (31.8 cu in)




= Components

=
Fuel system: 2 x Tillotson HR or Mikuni BN 38 diaphragm carburetors, with a Mikuni DF 44 diaphragm fuel pump
Fuel type: 96 octane automotive gasoline or 100LL avgas
Oil system: 50:1 super two stroke oil premixed with fuel
Cooling system: liquid
Reduction gear: 3:1 belt reduction drive




= Performance

=
Power output: 60 hp (45 kW)
Fuel consumption: 100% power approximately 29 L/h (7.67 gal/h), 75% power approximately 22 L/h (5.82 gal/h)




See also



Related lists

List of aircraft engines




References






External links


Photo of a Rotax 535 engine

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