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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

Letters

Is Your Engine Missing? I read every issue with extreme interest, but this year’s...

Aero ‘lectrics

The McDuckie.

What’s New

The new Lancair Evolution flies, and the Aircraft Electronics Association speaks out on ADS-B implementation. The Arlington Fly-In and EAA sign new agreement, and Garmin introduces the GPSMAP 495. Aircrafters LLC is the distributor for a new overhead lighting console.

All About Avionics

Todays homebuilt aircraft avionics packages often incorporate a number of boxes behind the panel, all requiring a particular type of wiring to go with them (not to mention all the other power draws such as lights, flap motors, etc.). Its advisable, then, to consider the length and nature of the wiring to be included in your project from the moment you start building. Avionics techno Stein Bruch explains the how and why of managing the wiring requirements for your aircraft.