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Thermal Protection System Testing in High Enthalpy Facility Richard French Vitaliy Grigoryev...
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Transcript of Thermal Protection System Testing in High Enthalpy Facility Richard French Vitaliy Grigoryev...
Thermal Protection System Testing in High Enthalpy Facility
Richard French
Vitaliy Grigoryev
November 17, 2005
Team HEaTT
Progress Report #4
Summary
• Schedule Update
• Testing Update
• Improvements
• Preliminary Lessons Learned
• Immediate Needs
Testing Overview - Ongoing
• Fully Characterize HETF
- Test Section Temperature Profile
- Mounting Stand Conduction
- Wall Temperature
• Axial Temperature Probe
Axial Temperature Probe
• 1 meter Uni-strut
• 7 J-type thermocouples
• Variable Test-to-Test Flame Temperature
- Raise and lower on pulley system
Testing Overview - Planned
• Establish Effective Operating Procedures
- Wire Harness Protection
- Measurement Confidence
- Test Duration Limits
• Shuttle Tile Sample Test
Improvements
• High temperature thermal cement for thermocouple interface
• Better wire harness shielding
• Pitot Probe re-positioned to rear, with thermocouple installed
Preliminary Lessons
• Steady state measurements difficult to obtain
- Temperature fluctuations due to non- uniform flow
• Thermal inertia of Test Stand, Axial Probe may affect measurements
Immediate Needs
• High temp thermocouple for measuring flame temp
• Verify thermocouple calibration
• Digital Data Acquisition System
• K-thermocouple wire to make better use of analog equipment
• Space Shuttle Tile!!!