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direct fuel injection diesel engine. The engine installation includes an electronic central processing unit (CPU) that continually calculates the proper fuel/air mixture. If this unit fails completely during flight, the mechanical backup position is selected and the pilot can control the fuel/air
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Full-throttle operation at sea level is at 90 inches (3 bar) of manifold pressure. Unlike some aircraft engines, which recommend the maximum power setting be used only for five minutes during the initial takeoff stage, the SR 305 can be operated indefinitely at this setting, although normal
172:. About one-third of the engine cooling is provided by airflow over the cylinders; the remainder is provided by engine oil. The engine's oil distribution system routes a large oil flow to hot zones in the cylinder heads and upper cylinder barrels, carrying the heat away to the oil coolers.
168:, both to accommodate the different engine dimensions and to provide the required cooling airflow. Belly-mounted cowl flaps are still used, but less cooling airflow is directed over the cylinder barrels and more cooling airflow is directed into side-mounted
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As of early 2008, SMA had provided over 50 conversion packages. (The installation is usually performed by other companies, not SMA.) Most of those conversions were performed in Europe, with less than a dozen having been performed in North
America.
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In July 2012, Cessna announced it would offer the Cessna 182 with this engine as a factory option, with deliveries expected by the second quarter of 2013. Cessna also stated at that time that the SMA engine would eventually replace the current
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costs significantly more than jet fuel, and by the fact that the diesel fuel flow at cruise is about 10 gallons (38 litres) per hour, compared to about 13.5 gallons (51 litres) per hour with the original engine.
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SMA expects 90 engines to be delivered in 2014, and is working on six-cylinder version called the SR460 which will have an output of 330 to 400 hp (246 to 298 kW).
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cruise uses around 70 inches (2.3 bar) and economy cruise uses around 60 inches (2 bar) of manifold pressure.
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169–194 kW (227–260 hp) at 2,200 rpm, producing 734–842 N⋅m (541–621 lb⋅ft) of
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engine. The plan was abandoned and in 2023 the Cessna 182 was still being sold only with the
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Cessna
Skylane Joins the Jet Set, Flying Magazine, Vol. 135, No. 5, May 2008, p. 74
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501:"Cessna 182 JT-A - The future of the iconic 182 smells distinctly like kerosene"
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company. The engine is offered as a conversion package for the
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The SMA SR 305-230-1 is a four-cylinder, horizontally opposed
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is an air/oil-cooled, horizontally opposed, four-cylinder,
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The cost of conversion may be justified in areas where
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piston aircraft engine. The engine is manufactured by
444:"DA50 Series - Preliminary Technical Specifications"
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The STC conversion on the Cessna 182 includes a new
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433:, 1 September 2014. Accessed: 4 September 2014.
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157:mixture as required to complete the flight.
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474:"Cessna Unveils Jet A Engine For Skylane"
572:. EASA. 15 February 2019. Archived from
567:"Type Certificate Data Sheets No. E.076"
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499:Goyer, Robert (24 September 2012).
270:4,988 cm (304 cu in)
16:1990s French piston aircraft engine
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687:Air-cooled aircraft piston engines
547:from the original on 24 March 2023
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513:from the original on 31 July 2023
480:from the original on 31 July 2023
297:195–207 kg (430–456 lb)
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461:ATLS GS-301 Batoor - atls.com.pk
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288:750–784 mm (30–31 in)
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258:Four-cylinder, four-stroke
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541:cessna.txtav.comyear= 2023
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463:Retrieved: 12 August 2022
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398:List of aircraft engines
282:930 mm (37 in)
276:834 mm (33 in)
692:Aircraft diesel engines
427:AirVenture Report: 2014
347:mean effective pressure
250:General characteristics
260:diesel aircraft engine
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223:Lycoming IO-540-AB1A5
682:SMA aircraft engines
80:1998 (First flight)
358:Related development
579:on 18 January 2021
381:Thielert Centurion
375:Comparable engines
364:Continental TD-300
345:, a 18.5-21.2 bar
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211:ATLS GS-301 Batoor
113:Continental TD-300
86:Major applications
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225:gasoline engine.
181:aviation gasoline
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203:SMA SR305-260E:
200:(STC conversion)
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191:Applications
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154:turbocharged
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98:Number built
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642:SMA Engines
333:Performance
170:oil coolers
134:SMA Engines
126:four-stroke
71:SMA Engines
49:aero engine
43:four-stroke
676:Categories
484:11 October
404:References
308:Fuel type:
302:Components
293:Dry weight
198:Cessna 182
142:Cessna 182
91:Cessna 182
77:First run
24:SR305-230
661:SMA SR460
431:AINonline
369:SMA SR460
245:EASA TCDS
242:Data from
545:Archived
511:Archived
478:Archived
353:See also
311:Jet fuel
649:Engines
583:6 March
551:31 July
517:31 July
286:Height:
274:Length:
102:>50
506:Flying
343:torque
280:Width:
148:Design
138:French
130:diesel
61:France
46:diesel
577:(PDF)
570:(PDF)
313:A/A-1
256:Type:
219:avgas
38:Type
585:2019
553:2023
519:2023
486:2012
166:cowl
120:The
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
