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
Build Your Own Stall-Warning Device
Certified aircraft have had them for decades-but not Experimentals. By Michel Suire.
