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  1. An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many small UAVs have used ...

  2. Beck 35 hp 4cyl toroidal engine 80 mm × 130 mm (3.1 in × 5.1 in) Beck 50 hp 4cyl toroidal engine 110 mm × 130 mm (4.3 in × 5.1 in) Beck 75 hp 4cyl toroidal engine 120 mm × 130 mm (4.7 in × 5.1 in) Beecher (B.L. Beecher Company, New Haven, Connecticut) Beecher 8HOA; Bell Aerosystems Company