Airflow Performance

The Vortex M912 gyroplane was our cover subject a decade ago for the May 2014 issue.

Designing and building a modified RANS S-9, part 2. By Michael Ryer and John Wells.

An old friend with a new personality.

Having worked with a variety of products from various manufacturers, author Stein Bruch has a lot of wisdom on the ins and outs of electronic flight instrument systems (EFISes) for homebuilts. He dispenses those smarts here, and offers tips on what to consider when making this important avionics decision, including such items as compatibility, reliability, value and ease of installation.