Propulsion plant operating on the basis of catalytic and/or chem

Details Propulsion plant operating on the basis of catalytic and/or chem Propulsion plant operating on the basis of catalytic and/or chem

1996-10-04

1998-08-04

Thorpe, Timothy S.

Power plants

Combustion products used as motive fluid

Using special fuel or oxidizer

60258, 60257, 60739, F02K 902

Patent

active

057877025

ABSTRACT:
A propulsion plant operating on the basis of a catalytic and/or chemical decomposition of a liquid propellant, is equipped with a so-called aspirator ring (19) that covers the exit openings of the injection pipes (11), thereby screening these openings toward the decomposition chamber. The aspirator ring (19) is further enclosed by an aspirator screen (19A). The aspirator ring is constructed as a vaulted channel (20) in which the discharge bores (21) are arranged in a pattern that assures a uniform distribution of the propellant into the catalyst bed in the decomposition chamber. The aspirator screen (19A) is also formed with a channel and both the channel in the screen (19A) and the channel in the aspirator ring (19) preferably have a semicircular cross-section. The catalyst bed is divided into two separate beds so that the respective housing can also be divided so that subassemblies of the thruster may be built separately and then assembled. One subassembly includes the injection components and one catalyst bed in a first housing section (5) and the other subassembly includes a second catalyst bed in a respective housing section (6) and an expansion nozzle (13) connected to the second housing section (6).

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patent: 5161379 (1992-11-01), Jones et al.
patent: 5568723 (1996-10-01), Burke et al.
patent: 5647201 (1997-07-01), Hook et al.
Monopropellant Hydrazine Propulsion Technology for Satellites Platforms Space Station Elements, MBB ERNO Space Systems Group Orbital Systems and Launcher Division, Sep., 1988 pp. 1-19.

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