View Single Post
  #2  
Old June 22nd 08, 04:42 AM posted to rec.aviation.piloting,rec.aviation.homebuilt
Richard Riley[_1_]
external usenet poster
 
Posts: 40
Default How Beat The High Cost Of Fuel: The ElectraFlyer-C

On Jun 16, 7:37 pm, Larry Dighera wrote:
How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.


1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.