{{Short description|Aircraft engine}} {{redirect|O-45|the observation aircraft|Martin B-10}} <!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. --> {{infobox aero engine |name= O-45 |image = File:Radioplane OQ-14. Righter O-45 engine.jpg |caption = Radioplane OQ-14 powered by a Righter O-45. ''National Museum of the United States Air Force.'' |engine_type= [[Flat twin engine|Flat-twin]] |national_origin = |manufacturer= [[Righter Manufacturing Company]] |first_run= |major_applications = [[Globe KD3G]] |number_built = |developed_from = |developed_into = |variants_with_their_own_articles = }} The '''Righter/Kiekhaefer O-45''' was an air-cooled, [[Two-stroke engine|two-stroke]] aircraft engine of [[Flat twin engine|flat-twin]] configuration, used extensively for powering [[target drone]]s in the late 1940s.<ref>[http://www.neam.org/aircraft_inventory/engprofile.php?ID=242 Kiekhaefer O-45-1]. New England Air Museum. Accessed 2013-02-12.</ref>
Designed by the [[Righter Manufacturing Company]], the O-45 was also built by the [[Carl Kiekhaefer|Kiekhaefer Corporation]] and the [[Menasco Motors Company]].<ref name="USAF">''[http://www.enginehistory.org/ModDesig/I%201.tif Model Designations of USAF Aircraft Engines]''. Air Force-WPAFB-O-6. USAF Air Materiel Command, 1950. Section I., Page 1.</ref>
==Variants== ;O-45-1 : {{convert|20|hp}} version ;O-45-3 : {{convert|35|hp}} version ;O-45-35 : Navy version of O-45-3
==Applications== * [[Beecraft Wee Bee]] * [[Frankfort OQ-16]]/[[Frankfort TD3D|TD3D]] * [[Globe KD3G Snipe]] * [[Globe KD4G Quail]] * [[O'Neill Pea Pod]] * [[OQ-15]] * [[Radioplane OQ-6]] * [[Radioplane OQ-14]] * [[Radioplane OQ-17]]/[[Radioplane KDR|KDR]] * [[Radioplane TDD]] * [[ULM 811 Ultra Cruiser Ultavia]]
==Specifications (O-45-1)== {{Pistonspecs ||ref=<ref name=USAF/> |type=2-cylinder air-cooled [[Flat twin engine|horizontally opposed]] direct drive naturally aspirated two-stroke aircraft piston engine |bore={{convert|3.25|in|mm|abbr=on|1}} |stroke={{convert|2.75|in|mm|abbr=on|1}} |displacement={{convert|45.5|cuin|cc|1|abbr=on}} |length= |diameter= |width= |height= |weight={{convert|34|lb|kg|abbr=on|1}} |valvetrain= |supercharger= |turbocharger= |fuelsystem= |fueltype=73 [[octane]] gasoline |oilsystem= |coolingsystem=Air-cooled |power=<br/> *(Normal): {{convert|20|hp|kW|abbr=on|1}} at 3,800 rpm at sea level |specpower= |compression= |fuelcon= |specfuelcon= |oilcon= |power/weight=
|designer= |reduction_gear=
|general_other= |components_other= |performance_other= }}
==See also== {{aircontent <!-- include as many lines are appropriate. additional lines/entries with carriage return. --> |see also= |related= |similar engines= |similar aircraft=<!-- similar or comparable aircraft --> |lists=<!-- related lists --> *[[List of aircraft engines]] }}
==References== {{reflist}}
{{US military piston aeroengines}}
[[Category:Boxer engines]] [[Category:1940s aircraft piston engines]] [[Category:Two-stroke aircraft piston engines]]