In Case You Missed it
Metal Magic: Driving and Squeezing Countersunk Rivets
Paul Dye explains how to both drive and squeeze flush rivets and offers handy tips to getting good, repeatable results.
Wind Tunnel
When is an airplane in trim? At least to the pilot, the airplane is trimmed when no stick force is required to maintain equilibrium. So how do we achieve this? Barnaby Wainfan explains any number of ways to go about it, including the use of trimtabs, spring systems, sparrow strainers and variable incidence tails.