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Engines and Auxiliary Power Units (APUs):
- Gas Turbine Engines and APUs
- Internal Combustion Piston Engines
- Stirling Cycle Engines
- Rotary Combustion Engines
- Missile & Rocket Engines
Gas Turbine Engines and APUs:
- Aircraft Engine Design
- CFM International
- Engine Alliance
- GE Aviation
- GE Honda Aero Engines LLC
- Honda Aero, Inc.
- Honeywell Aerospace Engines, Systems & Services
- International Aero Engines
- Ishikawajima-Harima Heavy Industries (IHI)
- MTU Aero Engines
- NASA: Types of Gas Turbines
- Rolls-Royce
- Safran Group
- Teledyne Continental Motors: Turbine Engines
- United Technologies Corporation (UTC)
- Walter Engines a.s.
- Williams International
- Volvo Aero
Gas Turbine Engine Parts Distributors:
Gas Turbine Engine Parts Manufacturers:
- Aircraft Precision Products
- Carmel Forge, Ltd.
- GE Aviation Systems Division
(formerly Smiths Aerospace) - Goodrich
- Heico Corporation
- Hitchiner Manufacturing Company
- Howmet Corporation
- Industria de Turbo Propulsores, S.A. (ITP)
- Ladish Co., Inc.
- Magellan Aerospace Corporation
- Major Tool & Machine, Inc.
- Moeller Manufacturing Co. Inc., Aircraft Division
- Parkway Products, Inc.
- Precision Castparts Corporation (PCC)
- Prvni brnenska strojirna Velka Bites, a.s. (PSB)
- Sermatech International
- Triumph Group
- Volvo Aero - Engine Components
Internal Combustion Piston Engines:
- Bombardier Recreational Products
- Delta Hawk Recreational Diesel Engines
- HKS Aviation Co., Ltd.
- Jabiru Aircraft Pty Ltd
- Limbach Flugmotoren
- Orenda Aerospace Corporation
- Rotec Engineering
- SMA: Societe de Motorisations Aeronautiques
- Teledyne Continental Motors
- Textron Lycoming
- Thielert Aircraft Engines GmbH
- Wilksch Airmotive Ltd.
Stirling Cycle Engines:
Rotary Combustion Engines:
Missile and Rocket Engines:
- Aerojet
- ATK - Alliant Techsystems Inc.
- EADS Astrium: Space Propulsion Systems
- MBDA Missile Systems
- Northrop Grumman Mission Systems: Rocket Systems Launch Program (RSLP)
- Northrop Grumman Space Technology
- Orbital Sciences Corporation
- Boeing Integrated Defense Systems: Missile Defense Systems
- Wickman Spacecraft & Propulsion Company
- XCOR Aerospace