Abstract: A fluidic accelerometer having a single sensitive axis. The accelerometer is comprised of a seismic mass having first and second end surfaces positioned perpendicular to the sensitive axis, viscous damping means for suspending the seismic mass in a normal null position and for damping oscillatory movement of the seismic mass in the direction of the sensitive axis, and means responsive to movement of the seismic mass in the direction of the sensitive axis for providing a restoring force to return the seismic mass to the normal null position and for producing an output fluidic signal variation proportional to the acceleration of the seismic mass in the direction of the sensitive axis.

Abstract: A torsional reed reference fluidic oscillator operating within 0.1% of the desired frequency over a temperature range of -65.degree. to +165.degree.F and an operating pressure of from 1 to 4 psi. The oscillator includes a torsional reed fluidic amplifier and fluidic feedback means for converting output signals from output ports of the amplifier to first and second input signals having a phase relationship for insuring operation of the apparatus as an oscillator. The amplifier is comprised of first, second and third plates, an elongated reed member, first and second torsional members and a tab, all of which are made of material having negligible thermal coefficient of expansion and negligible change in modulus of elasticity over the temperature range. The reed member is positioned within an elongated slot in the first plate, and is fixed thereto by the first and second torsional members, wherein the major axis of the torsional members is perpendicular to the plane and major axis of the reed member.

Abstract: A closed loop fluidic angular rate gyro having a single sensitive axis. The gyro is comprised of a supporting member, fluidic means for sensing movement of the gyro about the sensitive axis, and means for pivotally mounting the sensing means to the supporting member and about a torsional axis which is perpendicular to the sensitive axis to maintain the sensing means in a normal null position and allow limited rotation of the sensing means about the torsional axis in response to the angular velocity of the gyro about the sensitive axis. The gyro is further comprised of fluidic or electrostatic means responsive to movement of the sensing means for providing a restoring torque to return the sensing means to the normal null position and for producing an output signal proportional to movement of the sensing means about the torsional axis, whereby the output signal is proportional to the angular velocity of the gyro about the sensitive axis.