Performance of Laminar Rate Sensors.
ARMY MISSILE COMMAND REDSTONE ARSENAL AL GUIDANCE AND CONTROL DIRECTORATE
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Laminar rate sensors fabricated with present state-of-the-art etching techniques were studied and found to have undesirable features which include 1 small signal output 2 sensitivity of null to variation in supply pressure and 3 sensitivity of gain to temperature. Null sensitivity to supply pressure was considered to be most significant. Analysis showed that the following were contributors to null bias sensitivity 1 asymmetry of flow separation from nozzle wall 2 interference between the jet control edge 3 wall roughness 4 plane-to-plane alignment and 5 vent flow pattern asymmetries. Schemes for adjusting the null bias to a zero slope region are presented. A temperature compensation technique is also presented which also interacted with the sensor null bias. These techniques will require individual tuning of each sensor. Author
- Fluidics and Fluerics
- Test Facilities, Equipment and Methods