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David Ullman

David Ullman
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Vortex Generators for Cooling

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A simple fix reduced CHTs in a Velocity by 55 degrees. By David G. Ullman.

Hear the Hum?

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Whats the buzz? David Ullman looks at the past, present and future of the electric airplane.

Electric Dreams Prevail at the CAFE Aircraft Symposium

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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

Risky Business

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Surviving the unplanned pitch trim loop. By Sid Mayeux.

IFR GPS Buyer’s Guide: Avidyne and Garmin

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Selecting a GPS for your project has never been easy, even in the early...

The Dawn Patrol

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Fun with the Hun in the sun.

Light Aircraft Fuel System Design

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Part 2-Every component is there for a good reason!