AN ADVANCED HIGH TEMPERATURE THERMOCOUPLE FOR USE ON AEROSPACE VEHICLES.
Abstract
Thermocouple probes were fabricated using both W/W-26%Re and W-5%Re/W-26%Re thermoelectric elements encased in 1/8 inch diameter W-26%Re alloy sheaths. The probes were internally insulated with high purity thoria double bore tubing. Graded thoria-tungsten coatings were plasma sprayed externally on the sheaths for oxidation protection. Performance characteristics of these probes in thermal, oxidative and vibration environments were investigated. Results of tests demonstrated probes were capable of reliable service above 4500 F. Additional unsheathed W/W-26%Re and W-5%Re/W-26%Re thermoelectric systems were evaluated with respect to sensitivity, stability, and e.m.f. output versus temperature up to 5200 F. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1966
- Accession Number
- AD0487788
Entities
People
- Donald R. Dohr
- Peter M. Gross
- Raymond G. Drewes
- Robert T. Luedeman