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
KITPLANES Flies the RV-15!
Paul Dye flies the RV-15 prototype and shares first impressions of Van’s high-wing backcountry design.
What’s New
CubCrafters ships CarbonCub kits; Forward Visions EVS-100 system will be available in RotorWay Experimental/Amateur-Built helicopters; and MotoPOD will produce cargo pods to haul a street-legal motorcycle underneath the RV-10. Edited by Mary Bernard.
