Performance of Laminar Rate Sensors.
Abstract
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1980
- Accession Number
- ADA110007
Entities
People
- A. R. Barbin
- J. C. Dunaway
Organizations
- United States Army Aviation and Missile Command