Tech Briefs Magazine - September 2021 - 53

The origami-inspired, folded plastic fuel bladder doesn't crack at supercold
temperatures and could someday be used to store and pump fuel.
about 77 degrees Kelvin. The researchers found that the bladder
can be squeezed at least 100 times without breaking or leaking
under cold conditions. They've since demonstrated the bellows
numerous times and it still doesn't have holes in it.
The researchers are now beginning to conduct more rigorous
testing. They plan to do testing with liquid hydrogen, assessing
how well they can store and expel fuel and comparing the flow
rates of their bladder with current systems.
For more information, contact Tina Hilding at thilding@wsu.edu;
509-335-5095.
North American
& International
Power Cords
Interpower®
North American and
Service Valve for In-Orbit
Cooperative Satellite
Fueling
The valve enables telerobotic resupplying of
media such as propellant and pressurant.
Goddard Space Flight Center, Greenbelt,
Maryland
N
ASA Goddard developed the Coop erative Service Valve
(CSV) to facilitate the resupply of media, such as propellants
and pressurants, to satellites. The CSV replaces a standard
spacecraft fill and drain valve.
The CSV offers various advantages over standard service
valves: a robotic in terface, three individually actuated seals, a
self-contained anti-back drive system, and built-in thermal isolation.
When mounted to a spacecraft as designed, the CSV
transfers all operational and induced robotic loads to the
mounting structure. The anti-back drive mechanism prevents
the CSV seal mechanism from inadvertent actuation. Align -
ment marks, thermal isolation, and a mechanical coupling
capable of reacting operational and robotic loads optimize the
CSV for telerobotic operation.
Unique keying of the mating interface prevents mixing of
media where more than one configuration of the CSV is used.
Tech Briefs, September 2021
Cov
ToC
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53

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Tech Briefs Magazine - September 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - September 2021