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Technology Readiness Assessment for HEEET TPSThe HEEET project was conceived to develop a heatshield with a high performance ablative thermal protection material that can withstand the extreme entry environment produced as a result of rapid deceleration during high speed entry into Venus, Saturn, Uranus or higher speed entry into Earth's atmosphere. Successful maturation of HEEET supports future New Frontiers and Discovery AO's, as well as Flagship and directed missions in the longer term. In addition, HEEET has the potential to evolve and to support re-entry to Earth, for missions such as Mars Sample Return.The primary goal of the HEEET Project was to develop an ablative TPS heat-shield based on woven TPS technology to Technology Readiness Level (TRL) 6. Key evidence to support the TRL evaluation includes: Demonstration of reproducible manufacturing of a dual layer material over a range of thicknesses and integrated on to a heatshield engineering test unit at a scale that is applicable to near term Discovery as the highest priority and future NF missions as secondary priority set of missions. Demonstration of predictable and stable performance of the dual layer TPS over a range of entry environments that are applicable to near term Discovery and NF missions of interest to SMD.Includes completion of coupon arc jet and laser testing and development of a mid-fidelity thermal response model that correlates with test results. Demonstration of flight heatshield system design for a range of sizes and loads that are relevant to near term Discovery and NF missions of interest to SMD. Includes completion of structural testing to validate analytic thermal/structural models and development of a material property database. Includes structural testing of a ~1m Engineering Test Unit under relevant entry loads.
Document ID
20190028341
Acquisition Source
Ames Research Center
Document Type
Presentation
Authors
Gage, Peter (Millennium Engineering and Integration Co. Moffett Field, CA, United States)
Mahzari, Milad (NASA Ames Research Center Moffett Field, CA, United States)
Peterson, Keith H. (NASA Ames Research Center Moffett Field, CA, United States)
Ellerby, Don (NASA Ames Research Center Moffett Field, CA, United States)
Venkatapathy, Ethiraj (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
July 30, 2019
Publication Date
July 11, 2019
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
ARC-E-DAA-TN70346
Meeting Information
Meeting: International Planetary Probe Workshop (IPPW) 2019
Location: Oxford
Country: United Kingdom
Start Date: July 8, 2019
End Date: July 12, 2019
Sponsors: University of Oxford
Funding Number(s)
CONTRACT_GRANT: NNA13AC87C
Distribution Limits
Public
Copyright
Public Use Permitted.
Technical Review
NASA Peer Committee

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