| Rotax 915 iS | |
|---|---|
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| Type | Pistonaircraft engine |
| National origin | Austria |
| Manufacturer | Rotax |
| First run | 2014 |
| Major applications | Issoire APM 41 Simba 915iS |
| Manufactured | 2017–present[1] |
| Developed from | Rotax 912 |
| Variants | Rotax 916 iS |
TheRotax 915 iS is anAustrianaircraft engine, produced byRotax ofGunskirchen for use inultralight aircraft,homebuilt aircraft,light-sport aircraft, smallhelicopters andgyroplanes. The engine wastype certified in 2017.[2][3]
The engine was first publicly displayed atAirVenture in 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]
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 Collins ECUs, 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 overhauls was 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 Agency certified 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]
Data from AVweb[2] and manufacturer's website[1]
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