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The Lycoming O-540 is a family of air-cooled six-cylinder, horizontally opposed fixed-wing aircraft and helicopter engines of 541.5 cubic inches (8.9 L) displacement, manufactured by Lycoming Engines.
The Optica, powered by a 160 hp (119 kW) Lycoming IO-320 engine, made its maiden flight on 14 December 1979 [2] when it was flown by Squadron Leader Angus McVitie, the chief pilot of the Cranfield College of Aeronautics. [3] The Optica, upgraded to the more powerful Lycoming IO-540, [4] entered production in 1983.
When Van's introduced the RV-10 they planned three engine configurations. One configuration using a smaller lighter 210 HP Continental IO-360ES, and two others using the larger 235 and 260 hp (180 and 190 kW) Lycoming I/O-540. The #1 factory demonstrator used the IO-540, while the #2 RV-10 used the Continental IO-360.
Lycoming Engines is a major American manufacturer of aircraft engines. With a factory in Williamsport, Pennsylvania , Lycoming produces a line of horizontally opposed , air-cooled, four, six and eight-cylinder engines including the only FAA -certified aerobatic and helicopter piston engines on the market.
The first production aircraft, powered by a 180 hp (134 kW) Lycoming O-360-A1A engine, first flew on October 21, 1957. In 1958, it was joined by a higher-powered PA-24-250 with a 250 hp (186 kW) Lycoming O-540-A1A5 engine; this model was originally to be known as the PA-26, but Piper decided to keep the PA-24 designation. [2] [3]
Same as the IO-360-A1B6 but it is equipped with an inverted oil system kit for aerobatic flight. [4] AEIO-360-A1C 200 hp (149 kW) at 2700 rpm, Minimum fuel grade 100 or 100LL avgas, compression ratio 8.70:1. Same as the IO-360-A1C but it is equipped with an inverted oil system kit for aerobatic flight. [4] AEIO-360-A1D
The Glasair III is an all-composite cantilever low-wing monoplane. It is an improved variant of the earlier Glasair II with a retractable landing gear and powered by a 300 hp (224 kW) Lycoming IO-540-K1H5 engine. It has two seats side-by-side with dual controls. The aircraft can be fitted with wing tip fuel tanks.
Engines available as kits from the manufacturer for all models are the Lycoming IO-360 of 180 to 200 hp (134 to 149 kW), Lycoming IO-540 of 260 to 300 hp (194 to 224 kW), Continental IO-550 of 310 to 350 hp (231 to 261 kW) and the Franklin 6A350C1 of 205 to 235 hp (153 to 175 kW).