facthunter Posted May 22 Share Posted May 22 A lot of supercharging in planes is used for altitude power compensation. Some of the mechanical ones are 2 speed where you engage the higher gear at mid altitudes. The Turbo P&W 1830 in the Liberator was for high altitude flight. That engine is the only turbo'd P&W I know of. The best specific fuel consumption aero engine has 3 turbine "power recovery" units using the exhaust energy from a radial engine and coupled to the driveshaft. Used on the Lockheed Constellation (sometimes called the Consternation for their lack of reliability) Nev 1 Link to comment Share on other sites More sharing options...
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