Power plants – Reaction motor – Electric – nuclear – or radiated energy fluid heating means
Reexamination Certificate
2006-02-28
2006-02-28
Casaregola, Louis J. (Department: 3746)
Power plants
Reaction motor
Electric, nuclear, or radiated energy fluid heating means
C060S204000
Reexamination Certificate
active
07003941
ABSTRACT:
A thruster device and associated methods are provided. The thruster device comprises a frustoconical inner layer and a frustoconical outer layer that surrounds the inner layer such that the inner and outer layers cooperate to define a spiral flow passage therebetween. An outlet, such as a nozzle, is attached to an exit end of the thruster device such that the outlet is in fluid communication with the spiral flow passage. In one embodiment, the thruster device includes an end flow cap that is also attached to the exit end and establishes the fluid communication between the spiral flow passage and the outlet. The end flow cap includes at least one channel for directing the propellant from the spiral flow passage to the outlet. The design of the thruster device allows the frustoconical inner and outer layers to be assembled without galling or damaging the spiral flow passage.
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Carroll Joseph P.
Frye Patrick E.
Shoji James M.
Alston & Bird LLP
Casaregola Louis J.
The Boeing Company
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