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
Fuel Leak and Cracked Flare
A major fuel leak was discovered on this airplane not long after the first...
The Repairman Certificate
Those of us who have built or are building Experimental/Amateur-Built aircraft know that one...
Archive: November 1997
Ron Wanttaja sampled the still-new Van’s RV-8 for our cover story in the November...