View source for Rotax 535

{{short description|Austrian two-stroke aircraft engine}}
{{Use dmy dates|date=March 2023}}
{{Use American English|date=March 2023}}<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{|{{Infobox Aircraft Begin
| name=Rotax 535
| image=
| caption=
}}{{Infobox Aircraft Engine
|type=[[Aircraft engine]]
|manufacturer=[[Rotax]]
|designer=
|national origin=[[Austria]]
|first run=circa 1982
|major applications=[[Glaser-Dirks DG-500M]]<br>[[Schempp-Hirth Janus]]<br>[[Schempp-Hirth Nimbus-4]]
|produced=
|number built=
|developed from=
|variants with their own articles=
}}
|}
The '''Rotax 535''' is an [[Austria]]n [[aircraft engine]], that was designed and produced by [[Rotax]] of [[Gunskirchen]] for use in [[motor glider]]s.<ref name="typecertE209">[[European Aviation Safety Agency]], (26 February 2010), [http://easa.europa.eu/system/files/dfu/EASA-TCDS-E.209_BRP--Powertrain_Rotax_535_series_engines-01-26022010.pdf Type Certificate Data Sheet Number: E.209], retrieved 24 September 2015</ref>
The first application for [[Type certificate|type certification]] to [[JAR 22]], Appendix H, was made on 29 June 1982 and the first certification was granted on 27 April 1983.<ref name="typecertE209"/> It is out of production and is no longer offered for sale by Rotax.<ref>{{cite web|url=http://www.flyrotax.com/products.html|title=Rotax Aircraft Engines - Product Range|work=flyrotax.com|author=[[Rotax]]|accessdate=24 September 2015}}</ref>
==Design and development==
The Rotax 535 is a twin cylinder [[two-stroke]], [[Straight engine|in-line]], {{convert|521.2|cc|cuin|1|abbr=on}} displacement, liquid-cooled, gasoline engine design, with a 3:1 belt [[reduction drive]]. It employs dual [[Robert Bosch GmbH|Bosch]] or [[Ducati]] magnetic high-voltage condenser ignition systems, one or two carburetors and produces a maximum of {{convert|60|hp|kW|0|abbr=on}} 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.<ref name="typecertE209"/>
<!-- ==Operational history== -->
==Variants==
;535A
:Equipped with twin [[Tillotson Manufacturing Company|Tillotson]] HR or [[Mikuni (company)|Mikuni]] BN 38 diaphragm carburetors and a Mikuni DF 44 diaphragm fuel pump. Produces {{convert|60|hp|kW|0|abbr=on}} at 7200 rpm. First certified on 27 April 1983.<ref name="typecertE209"/>
;535B
:Equipped with twin Tillotson HR or Mikuni BN 38 diaphragm carburetors and a Mikuni DF 44 diaphragm fuel pump. Produces {{convert|55|hp|kW|0|abbr=on}} at 7200 rpm. First certified on 27 April 1983.<ref name="typecertE209"/>
;535C
:Equipped with  one Mikuni BN 38 diaphragm carburetor and a Mikuni DF 44 diaphragm fuel pump. Produces {{convert|60|hp|kW|0|abbr=on}} at 7200 rpm. First certified on 12 June 1987.<ref name="typecertE209"/>
==Applications==
*[[Glaser-Dirks DG-500M]]<ref>{{cite web|url=http://www.aopa.org/News-and-Video/All-News/1993/January/1/The-Glaser-Dirks-DG500M|title=The Glaser-Dirks DG500M|work=aopa.org|author=[[Aircraft Owners and Pilots Association]]| accessdate=24 September 2015}}</ref>
*[[Rolladen-Schneider LS9]] - prototype
*[[Schempp-Hirth Janus]]
*[[Schempp-Hirth Nimbus-4]]
*[[Schleicher ASH 25]]
<!-- ==Survivors== -->
<!-- Engines on display== -->
==Specifications (535A) ==
{{pistonspecs|
|ref=EASA Type Certificate<ref name="typecertE209"/>
|type=Twin cylinder, two stroke aircraft engine
|bore={{convert|72|mm|in|1|abbr=on}}
|stroke={{convert|64|mm|in|1|abbr=on}}
|displacement={{convert|521.2|cc|cuin|1|abbr=on}}
|length=<!-- {{convert||mm|in|1|abbr=on}} -->
|diameter=
|width=<!-- {{convert||mm|in|1|abbr=on}} -->
|height=<!-- {{convert||mm|in|1|abbr=on}} -->
|weight=<!-- {{convert||kg|lb|1|abbr=on}} -->
|valvetrain=
|supercharger=
|turbocharger=
|fuelsystem=2 x Tillotson HR or Mikuni BN 38 diaphragm carburetors, with a Mikuni DF 44 diaphragm fuel pump
|fueltype=96 octane automotive gasoline or 100LL [[avgas]]
|oilsystem=50:1 super two stroke oil premixed with fuel
|coolingsystem=liquid
|power={{convert|60|hp|kW|0|abbr=on}}
|specpower=
|compression=
|fuelcon=100% power approximately 29 L/h (7.67 gal/h), 75% power approximately 22 L/h (5.82 gal/h)
|specfuelcon=
|oilcon=
|power/weight=
|designer=
|reduction_gear=3:1 belt [[reduction drive]]
|general_other=
|components_other=
|performance_other=
}}
==See also==
{{aircontent
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|see also=
|related=<!-- related developments -->
|similar aircraft=<!-- similar or comparable aircraft -->
|lists= *[[List of aircraft engines]]
}}
==References==
{{Reflist}}
==External links==
*[http://www.tasmaninstruments.com.au/images/probes_a.jpg Photo of a Rotax 535 engine]
{{Rotax aeroengines}}
[[Category:Rotax engines]]
[[Category:Two-stroke aircraft piston engines]]
[[Category:Air-cooled aircraft piston engines]]
[[Category:1980s aircraft piston engines]]