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Hamming It Up
Amateur radio enthusiast Chuck Deiterich explains how pilots can use the Automatic Packet Reporting System (APRS) to track their flights and stay in touch with loved ones for a modest investment.
Three Vs. Three
A rare chance to get solid numbers on two new-generation composite props.
Ask the DAR
Mel Asberry - 0
NX numbers on older designs, logbook records, proving compliance with the 51% rule.
Effect of Propeller RPM on Speed, Efficiency, Noise, and Vibration
Getting better performance from a constant-speed prop.