Dirigible balloon with adjustable propellers - has two bladed rotors geared together with pitches independently variable and converging axes

摘要

The dirigible balloon has one or more fixed engines with two bladed rotors geared together and running in bearings in a single housing. The rotor blade pitches can be varied independently of each other, and their converging axes are symmetrical in relation to a horizontal line passing through the intersection point and parallel to the normal travel direction. The plane of the rotor axes can be horizontal or vertical. A drive can be provided to turn this plane about the horizontal line referred to.