David Ullman
Vortex Generators for Cooling
A simple fix reduced CHTs in a Velocity by 55 degrees. By David G. Ullman.
Hear the Hum?
Whats the buzz? David Ullman looks at the past, present and future of the electric airplane.
Electric Dreams Prevail at the CAFE Aircraft Symposium
Among the topics covered at the third annual Electric Aircraft Symposium were climate science, battery and motor technology, and aircraft designs, both real and imagined.
In Case You Missed It
How Bad Could a Prop Strike Be?
A prop strike, even at very low speed and power, is a serious matter.
But Will It Fly the Plane?
Raconteur and avid WW-I-era airplane enthusiast Dick Starks regales us with tales of innovation and resourcefulness when he attempts to measure the pull of his and his compadres VW powerplants.
