Dexterous Hexrotor is a six degree of freedom, truly holonomic aerial rotorcraft that provides force closure for controlled interaction with external structures. It is designed for aerial mobile ...

Shaft angle. The angle between the axes of two nonparallel gear shafts. Pitch angle. In bevel gears, the angle between an element of a pitch cone and its axis. Angular pitch.

Although shaded by oak trees and innocuously lined with benches, the quad makes me think of Lewis Carroll’s looking glass: It separates two nonparallel universes, dividing the domain of the ...