Originally posted by heliboy50
I just saw a bit on the Discovery channel about assisting ship propulsion with what amounts to an 80.2 square meter kite that they call a "Sky Sail."
It even looks like a giant pansh ace. They say that in a 10 mph wind it produces 2 tons of pull and can save the 100' foot research vessel equipped
with it 320 gallons of fuel oil per day. They went on to say that if half the worlds cargo freighters were to use them, it would save 2 billion
gallons per year. Pretty cool, I think. I wonder how many of the guys who thought it up were into traction kiting? |