Rotax 915 iS

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Rotax 915 iS
Rotax 915 iS, AERO 2018, Friedrichshafen (1X7A4431).jpg
Type Piston aircraft engine
National origin Austria
Manufacturer Rotax
First run2014
Major applications Issoire APM 41 Simba 915iS
Produced2017-present [1]
Developed from Rotax 912
Variants Rotax 916 iS

The Rotax 915 iS is an Austrian aircraft engine, produced by Rotax of Gunskirchen for use in ultralight aircraft, homebuilt aircraft, light-sport aircraft, small helicopters and gyroplanes. The engine was type certified in 2017. [2] [3]

Contents

The engine was first publicly displayed at AirVenture 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]

Design and development

The Rotax 915 iS is a four-cylinder four-stroke, horizontally-opposed, turbocharged, air and liquid-cooled, gasoline engine design, with a mechanical gearbox reduction 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 channel Rockwell 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 the Rotax 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. The European 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]

Variants

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

Specifications (915 iS)

Data from AVweb [2] and manufacturer's website [1]

General characteristics

Components

Performance

See also

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References

  1. 1 2 3 4 "ROTAX 915 IS/ISC - Rotax Aircraft Engines". www.flyrotax.com. Retrieved 31 January 2018.
  2. 1 2 3 4 5 "Rotax Announces New 135-hp Turbocharged Engine". AVweb. 21 July 2015. Retrieved 22 July 2015.
  3. "Rotax-Owner.com - ROTAX 915 IS: BRP UNVEILS A NEW TURBOCHARGED ROTAX AIRCRAFT ENGINE". Rotax-Owner. Retrieved 22 July 2015.
  4. "Rotax Updates 915iS Progress". AVweb. 6 April 2016. Retrieved 7 April 2016.
  5. "AVweb's Stuff of the Year". AVweb. 29 December 2015. Retrieved 2 January 2016.
  6. 1 2 "Rotax 915iS Sport Moves Closer To Market". AVweb. 26 July 2016. Retrieved 28 July 2016.
  7. 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. Retrieved 31 January 2019.
  8. 1 2 3 O'Connor, Kate (22 December 2021). "Rotax Introduces 24V Option For 915iS". AVweb. Archived from the original on 24 December 2021. Retrieved 24 December 2021.