Spedding's colleague Joachim Huyssen at the North-West University in South Africa designed an airplane on aerodynamic first principles — what kind of plane would, in theory, fly best.
The generalized triangle, quadrangle, and hexagons of order 2 are small point-line geometries that play a role in the theory of generalized polygons and buildings that is comparable to that of the Fano plane in the theory of projective planes.
Whereas in the plane there exist (in theory) infinitely many regular polygons, in three-dimensional space there exist exactly five regular polyhedra.
The algorithm relies on a -dimensional plane-search subroutine (which, in theory, can be implemented in calls to a first-order oracle).
One of the cited benefits of a circular runway is that, in theory, planes could approach or leave the airport from/toward any direction.
The study is based on the solutions of the complex variable theory in plane elasticity theory.
Computed values of transmission loss are compared with those computed by means of the plane wave theory, in order to highlight the onset (cutting-on) of various higher order modes and the effect thereof on transmission loss of the muffler.
What's more, should the federal bailout not provide enough cushion, Southwest has 200 planes -- about $5 billion worth, in theory -- that could be mortgaged.
In theory, a space plane could take passengers from London to Sydney in four to five hours.
A plane wave of a single frequency in theory will propagate forever with no change or loss.
Much like the converted, Kaga was fitted with two flying-off decks "stepped down" from a flight deck that extended two-thirds of the ship; in theory, this allowed planes to take off directly from the hangars while other planes landed on the top.
