High Temperature Thermocouple System for Advanced Aircraft Turbine Engines

reportActive / Technical Report | Accession Number: ADA025500 | Open PDF

Abstract:

This is a final report covering the development of a temperature measuring system for the very high temperature gas streams found in advanced jet engines. The measurement system is a thermocouple probe assembly suitable for interfacing to the Detroit Diesel-Allison GMA 200 Joint Technology Demonstration Engine. Average temperatures of the order of 2600-2700F 1425-1480C will have to be measured and it is anticipated that hot spots to 3000F 1650C will be encountered. This study covered the selection of an optimum thermocouple Pt- 40 Rh vs. Pt-0.6 ThO2 compatible compensating extension lead wire base metal usable to around 750C in air Nichrome vs. EA 9R-682 high temperature resisting sheath and shield tube material Pt-0.6 ThO2 crushable MgO insulation design of a temperature probe using the optimum materials and vibration testing at 1450C of one of the finished probes. The selected probe passed the high temperature vibration test successfully.

Author(s):
Toenshoff, D. A. ; Zysk, E. D.
Author Organization(s):
ENGELHARD MINERALS AND CHEMICALS CORP EDISON NJ RESEARCH AND DEVELOPMENT DEPT
Descriptive Note:
Final technical rept. 1 Aug 1974-31 Dec 1975
Pagination:
0109

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFAPL-TR-75-108
Contract/Grant Number(s):
F33615-74-C-2069
Task Number(s):
306603
Project Number(s):
AF-3066
Monitor Series:
TR-75-108, AFAPL
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_6_Net Centric; JCA_6.4.1_Secure Information Exchange; JCA_5.5.2_Task; JCA_5.5_Direct; JCA_5.3.3_Develop Strategy; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_6.4_Information Assurance; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_4.2.3_Manage Global Supplier Networks; JCA_4.2_Supply; JCA_6.2.1_Information Sharing; JCA_6.2.2_Computing Services; JCA_6.3.3_Spectrum Management; JCA_3.2_Engagement; JCA_3_Force Application; JCA_1.2.5_Lessons Learned; JCA_3.2.1_Kinetic Means
Modernization Areas:
Microelectronics
Communities of Interest:
Sensors
Descriptor(s):
*GAS TURBINES, *THERMOCOUPLES, *TEMPERATURE MEASURING INSTRUMENTS, *EXHAUST GASES, ELECTROMAGNETIC FIELDS, PROBES, CERMETS, PLATINUM ALLOYS, RHODIUM ALLOYS, THORIUM DIOXIDE, MAGNESIUM OXIDES, COMPOSITE MATERIALS, NICKEL ALLOYS, INSULATION, MANGANESE OXIDES
Field(s)/Group(s):
Laminates and Composite Materials, Metallurgy and Metallography, Test Facilities, Equipment and Methods, Jet and Gas Turbine Engines
Keyword(s):
*TURBINE INLET TEMPERATURES, NICHROME, PARTICULATE COMPOSITES
Report Date:
1976 Dec 31