The invention described here provides better aerodynamics in airplane
wheel fairings. A great improvement is achieved by putting doors on the
fairing that completely enclose the wheel. This eliminates drag from the
part of the tire that extends outside of a normal wheel fairing. It also
eliminates drag from the turbulence associated with the gap between the
wheel and the lower edge of a normal fairing. The described wheel fairing
is very close to the size and shape of an ideal fairing that could
totally enclose an isolated wheel assembly, but would not allow the
airplane to land. In fairings where the gear leg enters the top of the
fairing, drag is reduced by having a sharp ridge on the top of the
fairing, rather than the rounded fairing that is presently used. A
further reduction in total drag on the wheel fairing (at least in
airplanes traveling around 100 m/s or more) is achieved by making the
length to width ratio of the fairing in the range of 3.5.