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:

1976-03-16

Pagination or Media Count:

7.0

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