Enthalpy Posted May 25, 2013 Share Posted May 25, 2013 Hydrogen fuel cells would bring big advantages to helicopters.Fly long! Airborne 1t including passengers and fuel takes ~100kW with 78m2 rotor(s), say mean 130kW with the manoeuvres: that's two Honda Clarity fuel cells of <100kg each. 48kg hydrogen keep it in flight for 8h - that's 100kg with the tanks I described therehttp://www.scienceforums.net/topic/73798-quick-electric-machines/#entry738806Electric motors save maintenance, expensive and long with gas turbines.Electric motors are easily spread among many rotors, leading naturally to quadtoror-like designs. This is way easier than the pitch of common helicopter blades, which changes over a turn. http://en.wikipedia.org/wiki/QuadrotorSwift start and stop. Important to a businessman who pilots himself.Fuel cells bring range and flight duration that enable the classical missions of gas turbine helicopters, beyond city taxis and sightseeing tours. Electric multi-rotor copters must also be more silent and cleaner, hence better accepted.Marc Schaefer, aka Enthalpy Link to comment Share on other sites More sharing options...
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