Aeronautics and astronautics – Spacecraft – Reusable or returnable
Patent
1993-01-12
1994-04-26
Barefoot, Galen L.
Aeronautics and astronautics
Spacecraft
Reusable or returnable
244135R, 244161, B64G 100, B64G 164
Patent
active
053059700
ABSTRACT:
A centrifugal propellant depot positioned in outer space for storing and transferring cryogenic liquid propellants to and from transfer space vehicles which are adapted to transport cryogenic liquid propellants to the depot to receive the liquid propellants stored in the depot. The depot includes a plurality of contra-rotatable torus-shaped hollow storage tanks adapted to receive cryogenic liquid oxygen and hydrogen propellants that are carried in gas/liquid phase separation by rotational gravity. Transport rail members transversely bridge the storage tanks. A central docking hub is coupled to the transport rail members and disposed centrally of the rotating storage tanks. The docking hub may receive a transfer space vehicle on either of two opposing sides of the hub for transfer, via a transfer vehicle coupled to the rail members, outwardly to the storage tanks. The space vehicle may be flipped from an inwardly reclining position for draining of the liquid propellant into a storage tank outwardly to a position for receiving liquid propellant from a storage tank. A radially movable counterweight is also coupled to the rail members for movement as the space vehicle is carried by the transfer vehicle and transfer of liquid propellant is accomplished to ensure that the center of gravity of the depot is maintained at the central docking hub for gyroscopic stability. The counterweight includes an encapsulated hydrogen absorber, such as Lanthanum-Nickel 5 to sore waste hydrogen for further use. The rotating storage tanks of the depot are provided with variable interior baffles to ensure that the liquid propellant contained therein rotates at the same rotational speed as the storage tanks. Solar panels are attached to the depot to provide electricity.
REFERENCES:
patent: 3300162 (1967-01-01), Maynard et al.
patent: 3478986 (1969-11-01), Fogarty
patent: 3744739 (1973-07-01), Weaver et al.
patent: 4408943 (1983-10-01), McTamuney et al.
patent: 4735382 (1988-04-01), Pinson
patent: 4858857 (1989-08-01), Lange et al.
Caudle David A.
Johns William A.
Porter John W.
Barefoot Galen L.
Duncan, Jr. John R.
General Dynamics Corporation Space Systems Division
Gilliam Frank D.
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