Wind Tunnel

When the airflow separates from a surface, the result can be unsteady forces or turbulent wake shedding, neither of which is desirable.

Fixed-pitch Props

A major advantage of a fixed-pitch prop is that it is lighter, simpler and cheaper than one with variable pitch.

Fixed Pitch vs. Constant Speed

Deciding to use a fixed-pitch propeller or step up to the higher weight, cost, and complexity of a constant-speed prop in order to improve performance.

Wind Tunnel

Pitch non-linearities.

Wind Tunnel

Involved in the flight testing of a friends aircraft, Barnaby Wainfan contemplates the consequences (and wisdom) of designing an aircraft around an engine that may prove unsatisfactory or, worse, unavailable.

Wind Tunnel

Contrary to popular belief, the frontal area of an airplane is not the most important determinant of drag.

Stressing Structure

Beam column bending.

Wind Tunnel

Airplanes are surprisingly flexible, and changes in their shape can affect aerodynamic characteristics. Barnaby Wainfan explains how the two are coupled.

Wind Tunnel

Design process, part 6-obstacles.

Wind Tunnel

Aeroelasticity II—aileron flutter.

In Case You Missed it

Behind the Rope Line

A day in the life at Sun n Fun Air Ops. By Steve Kessinger.

Kit Stuff

Drawing on experience; by cartoonist Robrucha.

Contributors

Doug Rozendaal Right place, right time. Thats Doug Rozendaals kinda luck this month. Quite...

Plexiglas Play

The advantages of Plexiglas are many, but there are some important things to know about working with it and maintaining it.