| Gnome Lambda (80 hp)
 
      An improved version of the 
      original Omega of 1908, the Lambda also increased displacement from 8 to 
      almost 12 liters and output from 50 to 80 hp. The Lambda was introduced in 
      1912 and also marketed as the "80 hp". The concept of the rotary engine was that (unlike the radial engine) the 
      propeller was bolted firmly to the engine which rotated as a unit around a 
      stationary crankshaft. The torque generated tended to make aircraft 
      powered by rotary engines tricky to fly.
 specifications 
        7-cylinder rotary piston engine Air-cooled Displacement: 722 cubic inches (11.8 litres) Power output: 80 hp (60 kW) 
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