DEVELOPMENT OF AN ALL-FLUID PNEUMATIC PRESSURE REGULATOR
Technical Report,01 Feb 1965,30 Jun 1966
BENDIX RESEARCH LABS SOUTHFIELD MI SOUTHFIELD United States
Pagination or Media Count:
The requirements of an all-fluid pneumatic pressure regulator having no moving parts have been investigated and several regulation concepts have been studied and designed. The three major pressure regulator subsystem functions are 1 throttling, 2 feedback signal transfer, and 3 reference, or error detection. The throttling function is adequately performed by a vortex fluid state device. The feedback signal transfer is adequately performed by a confined-jet fluid state amplifier, and the reference or error detection is a built-in phenomenon of the confined-jet amplifier. These confined-jet amplifiers combine high supply pressure recovery with low control-to-supply pressure ratio. An alternate hybrid regulator that avoids the limitations imposed by the vortex throttle element and uses a mechanical variable area is investigated. This device is extremely practical, having a minimum of moving parts while retaining the high reliability and other desirable characteristics of a completely all-fluid system.