Airship

Details Airship Airship

1993-08-20

1994-10-25

Huppert, Michael S.

Aeronautics and astronautics

Aircraft control

Airship control

244 30, 244 29, B64B 110

Patent

active

053582004

ABSTRACT:
An airship includes a gas envelope filled with a buoyant gas, a duct equipped with an internal propulsion fan and attached to the aft of the gas bag, a boom projecting aft along an extension of the axis of the propulsion fan and an empennage provided on the distal end of the boom and is constituted to prevent boundary layer separation by causing the propulsion fan to suck air flowing along the hull surface into the duct and jet it aft. The duct attached to the aft of the gas bag is formed of a basket-like framework made of rigid light-weight material and covered with taut fabric material, the boom and empennage are formed of airtight fabric material and rigidified by internal pressures, and the internal pressure of the boom and the empennage are regulated so that when load forces received from the empennage side exceed prescribed values above which some part of the airship is liable to be damaged, the boom bends and/or the empennage deforms to relieve the load forces before the damage occurs and the original shape and rigidity is thereafter restored.

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