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Rotary Engines

Rotary engines for aerospace applications employ a triangular rotor orbiting within an epitrochoidal housing to execute the four-stroke thermodynamic cycle without reciprocating pistons, eliminating the need for valvetrain components and reducing part count significantly. This architecture produces a high power-to-weight ratio from a compact envelope, with apex seals and rotor cooling critical to engine airworthiness across UAV and light-aircraft propulsion roles.

To see a list of companies or products in this category click on the tabs above.

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Sponsorship of the Piston & Rotary Engines sector is currently available. See our advertising pages for details.

Rotary Engines suppliers linked to most aircraft programs in our database.

UAV Engines Ltd. (8 aircraft)
Austro Engine GmbH (4)
Aixro Rotary Engines (3)
Rotron Aerospace Ltd. (was Rotron Power) (2)
Freedom Motors (2)
Wankel Supertec GmbH (1)
Alturair (1)

Latest Airframer news and company press releases

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13/04/2026Press Release: DeltaHawk launches defense division for UAS engines
See the news and press release archive for Piston & Rotary Engines.
Elaire Corporation is a global supplier for airtool collets and various drill holding collets. All parts are made in the USA.
Elaire Corporation
CWST, leaders in surface treatment. Protecting and life extension of your critical components throughout any crisis!
Curtiss-Wright Surface Technologies
Quintus Technologies is a global leading provider of high pressure fluid cell presses and hydroform deep-draw presses for sheet metal forming
Quintus Technologies
Highly accurate torque sensors and transducers for the Aerospace & Defense industry since 1960.
S. Himmelstein and Co.
Reduce the time spent on current projects by using ESDU – engineering data and software that has been approved and endorsed by professional institutions.
Accuris: ESDU Aircraft Design
A global solutions leader in aerospace peelable coatings technology.
AC Products, Inc.
Innovative sealing solutions that facilitate energy transfer, maintain fluid integrity, & exclude contaminants, ensuring components endurance.
CDI Products
Elaire Corporation is a global supplier for airtool collets and various drill holding collets. All parts are made in the USA.
Elaire Corporation
CWST, leaders in surface treatment. Protecting and life extension of your critical components throughout any crisis!
Curtiss-Wright Surface Technologies
Quintus Technologies is a global leading provider of high pressure fluid cell presses and hydroform deep-draw presses for sheet metal forming
Quintus Technologies
Highly accurate torque sensors and transducers for the Aerospace & Defense industry since 1960.
S. Himmelstein and Co.
Reduce the time spent on current projects by using ESDU – engineering data and software that has been approved and endorsed by professional institutions.
Accuris: ESDU Aircraft Design
A global solutions leader in aerospace peelable coatings technology.
AC Products, Inc.
Innovative sealing solutions that facilitate energy transfer, maintain fluid integrity, & exclude contaminants, ensuring components endurance.
CDI Products
Elaire Corporation is a global supplier for airtool collets and various drill holding collets. All parts are made in the USA.
Elaire Corporation
CWST, leaders in surface treatment. Protecting and life extension of your critical components throughout any crisis!
Curtiss-Wright Surface Technologies
Quintus Technologies is a global leading provider of high pressure fluid cell presses and hydroform deep-draw presses for sheet metal forming
Quintus Technologies
Highly accurate torque sensors and transducers for the Aerospace & Defense industry since 1960.
S. Himmelstein and Co.
Reduce the time spent on current projects by using ESDU – engineering data and software that has been approved and endorsed by professional institutions.
Accuris: ESDU Aircraft Design
A global solutions leader in aerospace peelable coatings technology.
AC Products, Inc.
Innovative sealing solutions that facilitate energy transfer, maintain fluid integrity, & exclude contaminants, ensuring components endurance.
CDI Products

Supply chain relationships

Sectors serving Piston & Rotary Engines companies:
Engine Accessories & Oil  •  Engine Structure & Casings  •  Bearings  •  Metals  •  Seals & Sealing  •  Engine Controls & Monitoring  •  Power Transmission  •  Fasteners  •  Machining & Metal Removal  •  Forming Processes  •  Mechanical Hardware  •  Lubricants  •  Pumps  •  Fittings & Couplings  •  Valves  •  Sensors, Transducers & Detectors  •  Tubing, Hoses & Conduits  •  Structural Components  •  Fuel Systems  •  Metal Processing & Heat Treatment  •  Actuation  •  Switches  •  Engine Rotating & Gas-Path Parts  •  Fluid Power  •  Chemicals  •  Manufacturing Services  •  Active Electronic Components  •  Non-metal Materials  •  Mechanical Connectors  •  Coatings  •  Circuit Protection  •  Electrical/Electronic Connectors  •  Passive Electronic Components  •  Technical Consultants  •  Adhesives  •  Terminals, Relays & Switching  •  Composite Materials  •  Shielding  •  Composite Processes & Manufacturing  •  Batteries & Accessories  •  Design Software  •  Computer Integrated Manufacturing

Piston & Rotary Engines

Sectors purchasing from Piston & Rotary Engines companies:
Airframer  •  Airframe Assemblies  •  Rotors & Propellers  •  Aircraft Operations  •  Auxiliary Power

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