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Rotary Coupling Extends Life Of HoseOscillating rotary coupling enables hose to withstand bending oscillations without leakage. Intended for use where hose connects to stationary structure at one end and to oscillating structure on other end. Coupling, (a sun-and-planetary pulley system), eliminates fatigue stress at fixed end. Pulley coupling requires less hose than conventional helical-wrap couplings, and its weight, pressure drop, heat loss or gain, and fluid contents also less. Conceived for use on Space Station to transfer vapors across rotary joints to directional radiators for condensation or to transfer liquids to gimballed payloads for evaporation. On Earth, used to carry working fluids to and from evaporative solar collectors following path of Sun.
Document ID
19910000105
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Benner, Steve
(NASA Goddard Space Flight Center, Greenbelt, MD.)
Costello, Frederick
(NASA Goddard Space Flight Center, Greenbelt, MD.)
Swanson, Theodore
(NASA Goddard Space Flight Center, Greenbelt, MD.)
Date Acquired
August 14, 2013
Publication Date
March 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 3
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
GSC-13316
Accession Number
91B10105
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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