Keyword: Valves

Briefs: Motion Control

An apparatus called a "pneumatic stinger" has been developed to enable a first spacecraft, operating under remote control, to grasp a second spacecraft that is in orbit or other...

Briefs: Materials

An improved magnetostrictive valve for remotely controlling a flow of liquid helium has been developed. Heretofore, flows of liquid helium have been controlled by use of valves with...

Briefs: Electronics & Computers

Transmissive light valves based on voltage-tunable color-selective absorption of light in surface plasmons are undergoing development. Like other surface-plasmon-based devices reported in a number...

Briefs: Mechanical & Fluid Systems

Improved pressure-relief valves have been developed for systems that contain gases and liquids in a variety of pneumatic, hydraulic, and cryogenic applications. These valves could...

Briefs: Motion Control

It is not necessary to allocate valuable forebody volume to strake-deployment mechanisms.

Briefs: Robotics, Automation & Control

Miniature, lightweight, low-power, low-vibration Joule-Thomson Rankine-Cycle refrigerators have been proposed for cooling portable scientific instruments. These refrigerators would be made...

Briefs: Robotics, Automation & Control

A rib valve is under consideration for use as a shutter in an air swirler in the fuel nozzle of a variable-geometry combustor. In the original application, the variable-geometry...

Briefs: Mechanical & Fluid Systems

Automatic valves have been proposed for shutting off flows of liquids when abnormally large accelerations occur. These valves could be used, for example, to prevent outflows of...

Briefs: Robotics, Automation & Control

Microscopic forced-flow heat-transfer systems containing heat exchangers, flow channels, electrostatically driven peristaltic pumps, and related components have been proposed. These...

Briefs: Physical Sciences

We have developed an apparatus that generates a pulsed beam of fast oxygen atoms, under Small Business Innovation Research (SBIR) funding by NASA's Jet Propulsion Laboratory, to...