High-aspect ratio hybrid airship

Details High-aspect ratio hybrid airship High-aspect ratio hybrid airship

2006-11-21

2006-11-21

Palo, Frank (Department: 3644)

Aeronautics and astronautics

Aircraft, lighter-than-air

Airship and fluid sustained

C244S123110, C244S900000

Reexamination Certificate

active

07137592

ABSTRACT:
In one aspect, a hybrid airship including an outer shell, a plurality of helium filled gas envelopes, and an all-electric propulsion system can have a high-aspect ratio wing shape. In some embodiments, the hybrid airship may be launched using buoyancy lift alone and aerodynamic lift may be provided by the all-electric propulsion system. In one aspect, a photovoltaic array and a high energy density power storage system may be combined to power the propulsion system making the propulsion system regenerative. The high-aspect ratio wing shape provides low drag, and can allow the hybrid airship to fly at an altitude of at least about 100,000 ft. By continuously recharging the power storage system, the hybrid airship in accordance with some embodiments can stay aloft for months or even years. The hybrid airship may function as a military intelligence, surveillance, and reconnaissance and communications relay platform.

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