Space simulator Patent
Space environment simulator for testing spacecraft components under aerospace conditions
Stephens, J. B.↗
Engineering topics
Stephens, J. B.
Publications and source records attributed to Stephens, J. B..
Remote detection of local temperatures and local partial pressures with crossed-beam spectroscopy
Crossed-beam spectroscopy technique for remote detection of local temperature and partial pressure in turbulent flows
Krause, F. R.↗
Space molecular sink simulator facility
Space molecular sink simulator facility with prototype vacuum chamber for studying surface effect phenomena
MOLECULAR GAS↗
Molecular sink.
Molecular sink for simulated testing of spacecraft components noting vessel construction, vacuum pump system, molecular trap array, etc
MOLECULAR PUMP↗
Quartz crystals detect gas contaminants during vacuum chamber evacuation
Piezoelectric quartz crystals detect condensable gas contaminants backstreaming into a vacuum chamber when a pump is evacuating the chamber. One crystal acts as a thermometer, the other detects mass change. They are energized by electronic equipment which records frequency changes.
Stephens, J. B.↗
Crystal microbalance measures condensable molecular fluxes
Quartz crystal quantitatively measures molecular fluxes emanating from and condensing on spacecraft surfaces. Vibrating in a thickness shear mode, the crystal is frequency sensitive to changes in mass on its surface and can measure a fractional monolayer of a condensate.
Stephens, J. B.↗
Feasibility and potential of atmospheric crossed-beam experiments
Feasibility and potential of atmospheric crossed- beam experiments
OPTICAL BEAM SCANNING↗
Cryogenic quartz crystal microbalance
Cryogenic quartz crystal microbalance for spacecraft contamination studies
MICROBALANCE↗
Space molecular sink simulator
Space molecular sink simulator consisting of high- vacuum chamber for investigating spacecraft contamination
SINK↗
Space molecular sink simulator facility design.
Space molecular sink design to create vacuum environment, emphasizing pumping and test chamber instrumentation
ENVIRONMENT SIMULATION↗
Space molecular sink simulator facility design
Extreme high vacuum molsink simulator facility design to determine special effects on die-off rates of spores on spacecraft components
SPACE SIMULATION↗
Helium tube separates nitrogen gas from liquid nitrogen
To prevent a boiloff problem, liquid nitrogen flowing from a storage tank to a container, is separated into liquid and gaseous components. This is accomplished by centrifugal and venting action, using a section of perforated helical aluminum tubing.
Stephens, J. B.↗
Space molecular sink facility design.
Space molecular sink design to create vacuum environment, emphasizing pumping and test chamber instrumentation
VACUUM PUMP↗