Accession Number : ADD002949

Title :   Fluidic Acceleration Sensor.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Schmidlin,Albertus E

Report Date : 16 Mar 1976

Pagination or Media Count : 7

Abstract : The patent relates to a fluidic G sensor for monitoring the acceleration or deceleration of a missile which includes a hollow cylinder containing an inertial mass, e.g., a piston, which is supported by a diaphragm pressurized by gas. The gas pressure is supplied from an external source and is metered into the diaphragm chamber through a fixed orifice. Gas is discharged from the chamber through two vent orifices, one fixed and the other variable. The fixed vent orifice represents the output load and leads to a fluidic Schmitt Trigger. The variable vent orifice is modulated by diaphragm motion and serves to control the pressure under the diaphragm as a function of acceleration of the piston. A dashpot formed between the piston and the upper closed end of the cylinder, which contains a small orifice open to ambient pressure, is employed to damp the oscillation of the piston and thereby stabilize the output pressure.

Descriptors :   *Guided missiles, *Accelerometers, *Fluidic control, *Patents, Housings(Enclosures), Pistons, Orifices

Subject Categories : Fluidics and Fluerics
      Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE