In Case You Missed It
The Home Machinist, Part 9
If parts that don't quite fit are grinding you down, author Bob Fritz has a solution: Use a lathe to create a smooth finish on a precisely proportioned piece. While hes at it, hell demonstrate two ways to use the machines calipers to measure necessary offsets.
All About Avionics: Flight-Control Systems
As the industry matures, the sheer variety and capabilities of autopilots for Experimental/Amateur-Built aircraft are flourishing. By Stein Bruch.
Wind Tunnel
Don your thinking caps, kids. Its time to learn about the value of nondimensionalized aerodynamic data.