This machine, called by its inventor the Aëromobile, is designed, to accomplish gliding flight by the aid of propellers, to carry one man, and to manœuvre on or near the ground, before free flight is attempted, in order that its practicability may be thoroughly tested.

Theoretically, the fundamental principle upon which the practicability of the invention is based, is the determination by experiment of the exact relation existing between speed, supporting area, and weight, in order that, any two of the three being constant, the other may be varied in such a way that the result in a machine of this description shall always be equilibrium.