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
Combating Carb Ice
Barnaby Wainfan examines a sneaky and sometimes little understood cause of in-flight scares and engine failures: carb ice.
Light Stuff
This month, Light Stuff columnist Dave Martin briefly reviews the history of single-seat ultralights and predicts their future as ELSAs. Assuming they are neither fat nor too fast, getting the required training may still be a stickler.