When the airflow separates from a surface, the result can be unsteady forces or turbulent wake shedding, neither of which is desirable.
A major advantage of a fixed-pitch prop is that it is lighter, simpler and cheaper than one with variable pitch.
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.
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.
Contrary to popular belief, the frontal area of an airplane is not the most important determinant of drag.
Beam column bending.
Airplanes are surprisingly flexible, and changes in their shape can affect aerodynamic characteristics. Barnaby Wainfan explains how the two are coupled.