The Kopp-Etchells effect
Have you heard anything about the Kopp-Etchells effect? In fact, the Kopp-Etchells effect is a new name. Reporter and former Green Beret Michael Yon took a series of intriguing photos of glowing rotor blades as a helicopter lands in a military base in Afghanistan. (Pics)
Continue reading… “Intriguing Photos Of The Kopp-Etchells Effect”
A design that draws on jet engine technology could halve the cost of generating electricity from wind.
Continue reading… “Wind Power At Half The Cost”
Industrial motors can spin at a head-spinning 250,000 revolutions per minute. But a new matchbook-sized motor runs circles around the competition.
Continue reading… “New Spin Record Set By Matchbook-Sized Motor”
By using tiny rocket motors at the tips of the rotor blades, the Libelula eliminates the torque which makes a tail rotor necessary in a conventional helicopter. This in theory makes it much more reliable, which is a good thing when you’re hanging from a backpack a few hundred feet above terra firma. (Pics)
Continue reading… “Buy Your Own Strap-on Rocket-Powered Personal Helicopter”
