Superior Air Parts Gemini Diesel 100

The Superior Air Parts Gemini Diesel 100 is a diesel aircraft engine, under development by Superior Air Parts of Coppell, Texas, United States for use in homebuilt aircraft.[1]

Gemini Diesel 100
Type Aircraft engine
National origin United States
Manufacturer Superior Air Parts

The company is owned by the Chinese company Superior Aviation Beijing, which is 60% owned by Chairman Cheng Shenzong and 40% owned by Beijing E-Town, an economic development agency of the municipal government of Beijing.

Design and development

The Gemini Diesel 100 is a three-cylinder two-stroke, in-line, supercharged liquid-cooled, diesel engine design. It produces 100 hp (75 kW), with a helical gear mechanical gearbox reduction drive with a reduction ratio of 1.586:1.[1][2][3]

The engine design uses an opposed-piston engine, with "two-opposing-pistons-per-cylinder", based upon the Second World War 6-cylinder, 12-piston Junkers Jumo 205 engine concept.[3]

The engine was originally developed by UK based Powerplant Developments, who flew development engines for more than 10,000 hours. Superior acquired the company in 2015.[4][5]

The engine will not be type certified and is therefore intended for homebuilt and light-sport aircraft.[2]

Specifications (Gemini Diesel 100)

Data from Tacke and manufacturer[1][2]

General characteristics
  • Type: Three-cylinder, two-stroke aircraft uniflow diesel engine
  • Bore: 70 mm (2.8 in)
  • Stroke: 72 mm (2.8 in)
  • Dry weight: 72.5 kg (159.8 lb)

Components

Performance
  • Power output: 100 hp (75 kW)

See also

Related lists

References
  1. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, pages 262-263. Flying Pages Europe SARL, 2015. ISSN 1368-485X
  2. Superior Air Parts (2015). "Gemini Diesel 100". geminidiesel.aero. Retrieved 17 April 2018.
  3. Superior Air Parts (2015). "Gemini uniflow diesel engine". geminidiesel.aero. Retrieved 17 April 2018.
  4. Thomas B Haines; "Superior Introduces Diesel Gemini Meant for LSA Market", AOPA, 21 April 2015. (retrieved 27 July 2021)
  5. Superior Aviation Group has Acquired the Gemini Diesel Engine, Aviation Pros, 23 April 2015. (retrieved 27 July 2021)
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