Available Technology

Advanced Magnetostrictive Regulator

An all-electric, highly reliable and accurate regulator and valve system
Magnetostrictive materials used in valves developed at Marshall allow the valve to be opened and closed via application of a magnetic field to the outside of the valve envelope. This process contains all moving parts inside the pressure shell, eliminating the need for feedthroughs or mechanical seals. Marshall's valve concept moves the valve coil outside a fluid boundary, keeping the coil from contacting the fluid under flow. This concept features a small valve design no greater than 1/16 OD, and accommodates a digital design whereby multiple elements are used to accommodate larger throughput needs. This results in a highly effective, redundant valve system. Building on this concept, Marshall's MS regulator is comprised of the MS valve element, an MS-based pressure transducer, and a servo-circuit to control the current to the valve coil. This all-electric design enables highly accurate and highly reactive regulation. As the current changes, the magnetic field strength adjusts, causing the valve poppet to reposition, bringing the pressure back to the setpoint.
Abstract: 
NASA Marshall Space Flight Center has developed a set of unique magnetostrictive (MS) technologies for utilization in pressure regulation systems. By combining MS-based sensors with a newly designed MS-based valve, Marshall has developed an advanced MS regulator. This innovative approach provides a regulator with rapid response times. In addition, the components are lightweight, compact, highly precise, and can operate over a wide range of temperatures and pressures. A prototype of the MS valve has been developed and NASA is seeking partners for licensure of this novel technology.
Benefits: 

Fast Response: Offers precise operation with response times up to an order of magnitude faster than current technologies.

applications: 

Pressure-fed rocket propulsion systems

Aircraft engines

Automotive fuel systems

Industrial systems Oil-flow control, air and gas compressors, steam turbines, power recovery, and power-generating equipment

Biomedical devices Device implants requiring pressure/flow control, and drug metering systems

Reps: 
Patent Number: 
8,291,776
Internal Laboratory Ref #: 
TOP8-108
Patent Status: 
Patent Issue Date: 
June 26, 2015
Agency
NASA
Region
Southeast
State: 
Alabama
Phone: 
256-544-9151
Email: 
terry.taylor@nasa.gov
Lab Representatives
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