Rotax 915 iS
| Rotax 915 iS | |
|---|---|
| |
| Type | Pistonaircraft engine |
| National origin | Austria |
| Manufacturer | Rotax |
| First run | 2014 |
| Major applications | Issoire APM 41 Simba 915iS |
| Produced | 2017-present[1] |
| Developed from | Rotax 912 |
| Variants | Rotax 916 iS |
TheRotax 915 iSis anAustrianaircraft engine,produced byRotaxofGunskirchenfor use inultralight aircraft,homebuilt aircraft,light-sport aircraft,smallhelicoptersandgyroplanes.The engine wastype certifiedin 2017.[2][3]
The engine was first publicly displayed atAirVenturein July 2015[2]and first flown in March 2016.[4]
In January 2016 the engine was named AVweb's "Best New Engine" of 2015.[5]
Design and development
[edit]The Rotax 915 iS is a four-cylinderfour-stroke,horizontally-opposed,turbocharged,air and liquid-cooled, gasoline engine design, with a mechanical gearboxreduction drive.The turbocharger has a compression ratio of 3.5:1 and the engine will have a critical altitude of 15,000 ft (4,572 m). It employs dual electronically controlled fuel injection, using dual channelRockwell CollinsECUs, with dual ignition and produces 141 hp (105 kW) for take-off and 135 hp (101 kW) continuous. The engine can produce rated power up to 15,000 ft (4,572 m) and has a ceiling of 23,000 ft (7,010 m).[1][2][6]
The engine is based on theRotax 912,but differs in that it has fuel injection, a reinforced crankshaft, new pistons, a new gearbox and a turbocharger.Time between overhaulswas expected to eventually be raised to 2000 hours with operational experience, but started at 1200 hours.[2][6][1]
The design entered production in the second half of 2017. TheEuropean Aviation Safety Agencycertified the Rotax 915 iSc3 A on 14 December 2017 and the Rotax 915 iSc3 B on 4 January 2018.[7]
In December 2021 the option to replace the 12V electrical system with a 24V one was introduced. The 24V version of the engine is designated the 915iS C24 for the non-certified version and the 915iSc C24 certified version.[8]
Variants
[edit]- Rotax 915iS
- Base version with a 12V electrical system
- Rotax 915iS C24
- Non-certified model with 24V electrical system[8]
- Rotax 915iSc C24
- Certified model with 24V electrical system[8]
Applications
[edit]- Blackshape Prime
- Issoire APM 41 Simba 915iS
- Progressive Aerodyne SeaRey
- Sling Aircraft Sling TSi
- Flying Legend Tucano Replica
- Bristell B23-915 Turbo
Specifications (915 iS)
[edit]Data fromAVweb[2]and manufacturer's website[1]
General characteristics
- Type:four-cylinder, four-stroke, horizontally-opposed, geared aircraft engine
- Bore:84.0 mm (3.3 in)
- Stroke:61.0 mm (2.4 in)
- Displacement:1,352 cc (82.5 cu in)
- Dry weight:84.6 kg (186.5 lb) dry
Components
- Turbocharger:with a compression ratio of 3.5:1
- Fuel system:dual channelRockwell CollinsECUs
- Fuel type:high-octane automotive gasoline
- Cooling system:liquid and air
- Reduction gear:mechanical gear type
Performance
- Power output:141 hp (105 kW) for take-off, 135 hp (101 kW) continuous
- Specific fuel consumption:280–310g/(kW·h) at 5,500 rpm
- Power-to-weight ratio:0.73 hp/lb (1.19 kW/kg)
See also
[edit]Related lists
References
[edit]- ^abcd"ROTAX 915 IS/ISC - Rotax Aircraft Engines".www.flyrotax.com.Retrieved31 January2018.
- ^abcde"Rotax Announces New 135-hp Turbocharged Engine".AVweb.21 July 2015.Retrieved22 July2015.
- ^"Rotax-Owner.com - ROTAX 915 IS: BRP UNVEILS A NEW TURBOCHARGED ROTAX AIRCRAFT ENGINE".Rotax-Owner.Retrieved22 July2015.
- ^"Rotax Updates 915iS Progress".AVweb.6 April 2016.Retrieved7 April2016.
- ^"AVweb's Stuff of the Year".AVweb.29 December 2015.Retrieved2 January2016.
- ^ab"Rotax 915iS Sport Moves Closer To Market".AVweb.26 July 2016.Retrieved28 July2016.
- ^European Aviation Safety Agency(4 January 2018)."Type Certificate Data Sheet No, E.121 for Piston Engines Rotax 912 series"(PDF).www.easa.europa.eu.Retrieved31 January2019.
- ^abcO'Connor, Kate (22 December 2021)."Rotax Introduces 24V Option For 915iS".AVweb.Archivedfrom the original on 24 December 2021.Retrieved24 December2021.