PPRuNe Forums - View Single Post - Electric tail rotor; an alternative?
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Old 6th Dec 2018, 17:27
  #129 (permalink)  
petit plateau
 
Join Date: Jul 2007
Location: uk
Posts: 47
Originally Posted by gevans35 View Post
Battery capacity?
"Extra 330LE aircraft are powered by an electric SP260D motor with a power output of 260kW (348hp). The electric motor was developed by Siemens with support from Germany’s Aeronautics Research Program (LuFo). The motor can drive propellers directly without the use of a transmission, and can deliver 2,500 revolutions per minute at rational speeds. It has a continuous torque of 1,000nm and link voltage of 580v. The motor has a maximum coolant inlet temperature of 90°C and efficiency of 95%. The aircraft features two battery packs, each with 14 high-power Li-Ion battery modules with a capacity of 18.6kWh. The aircraft’s motor weighs 50kg including airscrew bearings, and has a low power-to-weight ratio of five kilowatts per kilogram, which was achieved with the use of new simulation techniques and sophisticated lightweight construction." from https://www.aerospace-technology.com...tric-aircraft/

What is the weight of conventional tail rotor transmission, power offtake, controls, etc ?
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