STROMETRICS, Inc. Commercial Upgraded Military Heritage Re-entry Vehicle Thermal Sensors for Current Generation TPS Material Ground & Flight Test Evaluation Paper/Presentation to the Thermal & Fluids Analysis Workshop (TFAWS) 2004 Pasadena California, Paper no. 109-A0027 August 30 through September 3, 2004 John M. Cassanto, President & CEO George D’Heilly, KSC Manager Ted Moller, Manager Phil Ritchie. Consultant Roger Wayne, Specialist 108 Ashland Drive Downingtown, PA 19335 Tel: (610) 280 0869,
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Commercial Upgraded Military Heritage Re-entry Vehicle Thermal Sensors
Commercial Upgraded Military Heritage Re-entry Vehicle Thermal Sensors for Current Generation TPS Material Ground & Flight Test Evaluation Paper/Presentation to the Thermal & Fluids Analysis Workshop (TFAWS) 2004 Pasadena California, Paper no. 109-A0027 August 30 through September 3, 2004 - PowerPoint PPT Presentation
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STROMETRICS, Inc.
Commercial Upgraded Military Heritage Re-entry Vehicle Thermal Sensorsfor Current Generation TPS Material Ground & Flight Test Evaluation
Paper/Presentation to the Thermal & Fluids Analysis Workshop (TFAWS) 2004Pasadena California, Paper no. 109-A0027
August 30 through September 3, 2004
John M. Cassanto, President & CEO George D’Heilly, KSC Manager Ted Moller, Manager
1. FLIGHT TEST INSTRUMENTATION WERE DEVELOPED IN THE 70’s FOR DOD RE-ENTRY VEHICLES TO EVALUATE HEATSHIELD/TPS PERFORMANCE
2. TPS SENSORS WERE SPUN OFF AS A COMMERCIAL ENDEAVOR IN THE MID 80’s AND HAVE BEEN AVAILABLE FOR MORE THAN 20 YEARS
3. THE SENSORS HAVE BEEN CONTINUOUSLY UPGRADED AND SUBJECTED TO FULL SCALE FLIGHT TESTS (TRL 6) TO MEET CLIENT REQUIREMENTS - INCREASED SENSITIVITY
- SMALLER FOOTPRINT - TAILORED TO SPECIFIC TPS MATERIAL
- HIGHER OPERATING TEMPERATURES
4. TPS INSTRUMENTATION HAS FOCUSED ON - HEATFLUX/TRANSITION SENSORS - ABLATION/RECESSION SENSORS - MULTI-ELEMENT THERMOCOUPLE PLUGS - ACCURATE DUAL RANGE PRESSURE SENSORS
5. UPGRADED COMMERICAL TPS SENSORS WITH A MILITARY HERATIGE & TRACK RECORD CAN BE USED FOR CURRENT NASA AND DOD FLIGHT & GROUND TEST EVALUATION OF ADVANCED TPS ABLATIVE MATERIALS
REFERENCE: “ A SIMPLE RECESSION GAGE FOR INFLIGHT MEASUREMENT OF THE CHAR DEGRADATION ZONE FOR RE-ENTRY VEHCILE HEATSHIELDS” ISA PAPER BY J. M. CASSANTO ET AL ., 26TH INTERNATIONAL INSTRUMENTATION SYMPOSIUM, SEATTLE, MAY 5-8, 1980
ARAD SENSOR
STROMETRICS, Inc.
Raw ARAD Telemetry Recession Flight Data
STROMETRICS, Inc.
LBRV-1 ARAD Recession Data Compared with Previous Flight Data
STROMETRICS, Inc.
Comparison of ARAD Flight Recession Data with Predictions
STROMETRICS, Inc.
ARAD HEATSHIELD ABLATION FLIGHT DATA AND CHAR LAYER CORRELATION
STROMETRICS, Inc.
Galileo Jupiter Probe Used ARAD Sensors to Determine Recession History & Ablated Shape
• Jupiter Probe TPS Experienced Severe Conditions
• Mach No ~50, Velocity ~47 Km/sec • Re-entry Loads ~ 250 g’s• Peak Heating Rate ~ 30kW/cm, 300kJ/cm• ARAD Sensors Provided by GE for the Jupiter Probe
Obtained Good Data and Met Mission Requirements• GE is no Longer in the Flight Sensor Business • ARAD Sensors Provided to NASA for the Jupiter Probe
were Fabricated by GE/Astrometrics Personnel. Jupiter Probe ARAD Design Has been Upgraded and has been Available “Off the Shelf” Commercially Since the 1980’s.
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STROMETRICS, Inc.
Galileo Jupiter Probe Used ARAD Sensors to Determine Recession History & Ablated Shape
• Jupiter Probe TPS Experienced Severe Conditions
• Mach No ~50, Velocity ~47 Km/sec • Re-entry Loads ~ 250 g’s• Peak Heating Rate ~ 30kW/cm, 300kJ/cm• ARAD Sensors Provided by GE for the Jupiter Probe
Obtained Good Data and Met Mission Requirements• GE is no Longer in the Flight Sensor Business • ARAD Sensors Provided to NASA for the Jupiter Probe
were Fabricated by GE/Astrometrics Personnel. Jupiter Probe ARAD Design Has been Upgraded and has been Available “Off the Shelf” Commercially Since the 1980’s.
F
STROMETRICS, Inc.
ARAD TPS Ablation Data From NASA Jupiter Probe
ARAD Recession Data from Jupiter ProbeJupiter Probe Configuration with ARAD Locations
Typical ARAD Sensor for Jupiter Probe Fabricated by GE/Astrometrics Personnel. Figure From Ed Martinez Presentation titled “Thermal Microsensor development” NASA Ames Research Center, August 23, 2003
STROMETRICS, Inc.
ARAD Flight Test Recession Data on Quartz Phenolic Nose Tip
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Matrix of ARAD* Sensors Flown on Various Heat Shield Materials
* All ARAD Sensors were Fabricated by GE/Astrometrics Personnel
STROMETRICS, Inc.
Thermal Arc Ground Data Comparison of a Single ARAD Sensor with Two Discrete Thermocouple Plug Data Points (1300 deg Isotherm)
One ARAD Sensor, Continuous Data
Two Plug Thermocouplesat Two Discrete Data Pointsin time
STROMETRICS, Inc.
4 Discrete Single 1300 F Thermocouple Data Pts, 4 TM Chs, 4 Checkout/ Sensor Stem Tests
Four Plug TC’s
One ARAD Sensor, Continuous Data Throughout Re-entry , 1 TM Channel, 1 Checkout/Sensor Stem Test
Single ARAD
Flight Comparison of a Single ARAD Sensor with Multiple Plug Thermocouples at Different Depths
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BASIC REFERENCE FOR THE ARAD ABLATION GAGE
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QUAD MULTI-ELEMENT EMBEDDED THERMOCOUPLE PLUG
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MULTI-ELEMENT QUAD EMBEDDED PLUG THERMOUCOUPLE
PHOTO OF FOUR EMEMENT PLUG THERMOCOUPLE
SCHEMATIC OF FOUR ELEMENT PLUGTHERMOCOUPLE
TYPICAL FLIGHT DATA FROM MULTI-ELEMENTEMBEDDED PLUG THERMOCOUPLE
STROMETRICS, Inc.
• Delta-T: Operates at temperatures in the range of 2150 Deg F. Range can be extended to 3150 Deg F if required.
• ARAD: Operates in 1300 to 3500 Deg F isotherm. Range can be extended.
• Quad: Embedded Plug T/C’s current temperature range is 2500 to 4000 Deg F.
• Dual Range Extender for Pressure Sensors: Electronics prototype needs to proceed to flight hardware status
Capability/Status of Existing Delta-T, ARAD, & Multi-Element Thermocouple Plug Sensors
STROMETRICS, Inc.
Concluding Remarks (TPS Validation)
• Flight Test Data is Essential & Real World.
• Use of Reliable Sensors with a Flight Heritage is Cost Effective for both ground & Flight tests.
• Existing Upgraded “Off the Shelf” Military Heritage Commercial Sensors operate in the 2500 to 4000 Deg F range and are Applicable for NASA Planetary Probes and DOD Ballistic & Maneuvering Glide Vehicles.
• Commercial Sensors can be Further Upgraded to Include Higher Temperature Capability & Tailored to new TPS Requirements/Characteristics if Needed.
• The Commercial TPS Sensors Described in this Paper will be Tested in a Silica Phenolic Heat Shield at the Langley Thermal Arc 4th quarter 2004.