Accession Number : ADD003667

Title :   Laminar Jet Linear Accelerometer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Drzewiecki,Tadeusz M

Report Date : 27 Jul 1976

Pagination or Media Count : 5

Abstract : A laminar jet linear accelerometer includes a plenum chamber to which pressurized fluid is supplied and a nozzle operatively associated with the chamber for issuing the fluid in the form of a jet. The jet is conducted into another chamber, which is vented to an ambient environment, and output channels, having fluidic output sensors disposed therein, are disposed downstream of the vented chamber. Under nonacceleration conditions, the issued jet uniformly impinges upon the sensors and a zero differential output is sensed and indicated, thereby indicating the absence of an applied acceleration. Under applied acceleration conditions, however, the jet flow is deflected by means of the applied acceleration and consequently, such flow impinges upon the sensors in a non-uniform manner. A differential output is thus sensed and the value or magnitude of the acceleration applied may be determined therefrom. (Author)

Descriptors :   *Patents, *Laminar flow, *Jet flow, *Linear systems, *Accelerometers, Plenum chambers, Pressurization, Nozzles, Detectors, Output, Acceleration, Flow streamline, Impingement

Subject Categories : Test Facilities, Equipment and Methods
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE