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
Free Flight: Embracing New Ideas
Embracing new ideas in avionics and other areas of aviation will allow us to enjoy the benefits and move the industry forward.
Problemas en México
I was dismayed to receive an alert from the Baja Bush Pilots that aviation authorities in Mexico have recently turned away Experimental aircraft after entering the country.
Ask the DAR
DAR Mel Asberry answers questions about when you need A&P signoff, re-certifying an airplane to make it an LSA (hint: cant be done) and pre-registration of an Experimental.
Gyroplane Safety
by Ralph Taggart
Most sport gyroplanes aren't beautiful or even cute, but there is no...