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David Ullman

David Ullman
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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...

Completions

Builders share their successes.
repairman certificate

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...