SportairUSA, LC

If you are building an aircraft kit that requires drilling holes into metal parts,...

Finishing tapes not only strengthen areas that need reinforcement, but they also cover unsightly screws, rivets and rib-lacing cord. This month we cover the types of tapes available, where they should be applied and how to apply them; by Ron Alexander.

Glasair’s decision to turbocharge its Sportsman model opened up the door to additional design considerations and refinements. But getting to the desired performance has proved challenging. By Marc Cook.

The aerodynamics of an airplane sometimes don't cooperate with the pilots desire to roll, and instead produce both yaw and roll. Contributing factors are aileron parasite drag, induced drag between the wings and changes in the roll rate itself;