1 / 14

Aerothermal Ground Testing of

Aerothermal Ground Testing of Flexible Thermal Protection Systems for Hypersonic Inflatable Aerodynamic Decelerators. 9 th International Planetary Probe Workshop 16-22 June 2012, Toulouse. Walter E. Bruce III, Nathaniel J. Mesick, Paul G. Ferlemann,

daquan-kirkland
Download Presentation

Aerothermal Ground Testing of

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Aerothermal Ground Testing of Flexible Thermal Protection Systems for Hypersonic Inflatable Aerodynamic Decelerators 9th International Planetary Probe Workshop 16-22 June 2012, Toulouse Walter E. Bruce III, Nathaniel J. Mesick, Paul G. Ferlemann, Paul M. Siemers, Joseph A. Del Corso, Stephen J. Hughes, Steven A. Tobin, and Matthew P. Kardell NASA Langley Research Center Joseph.A.DelCorso@nasa.gov

  2. Outline • Flexible Thermal Protection System (FTPS) Overview • Previous Work • Test Conditions • Testing Methodology • Boeing LCAT Facility • CFD Analysis • Hardware Design • Conclusions • Future Plans

  3. Flexible Thermal Protection SystemOverview • Flexible TPS (FTPS) Benefits • Larger Heatshield • Reduced Ballistic Coefficient • Greater Payload Mass Delivered • Higher Landing Altitude • FTPS Requirements • Flexible (Foldable) • Handle Rigors of Packing and Stowage • Handle Aerothermal Loads • Light Weight • Compact to Small Volume

  4. Flexible Thermal Protection SystemsComponents A FTPS is Constructed from Three Basic Components • Outer Cloth – Handles Mechanical Loads • Aerodynamic Shear • Protects Insulator from Abrasion and Handling Issues • Insulator – Manages Heat Load • Insulator Sized to Maintain Supporting Structure at Desired Temperature • Gas Barrier – Prevents Hot Gas Penetration to Support Structure FTPS Materials and Function Outer Cloth – Mechanical Loads Insulator – Heat Load Gas Barrier - Permeability

  5. Previous Aerothermal Testing • Tested in Three Different Facilities • 8-Foot High Temperature Tunnel • High Shear Force • Limited Heat Flux • Laser Hardened Materials Evaluation Laboratory • No Flow • Optical Property Uncertainty • Panel Test Facility • Low Pressure

  6. Test Conditions

  7. Testing Methodology • Focusing on IRVE-3 and HEART Trajectories • Validation and Verification for model Development • FTPS Development for HEART Vehicle • Max-Max for Quick Screening • Over-Test of Combined Heating and Pressure • Can Lead to False Negatives • Multiple Material Systems • Stagnation and Shear Testing • Matching Heat Flux and Pressure

  8. Boeing LCAT Facility

  9. Testing Stagnation Model In Test Flow Shear Test Flow Stagnation Test Instrumentation

  10. Comparison: Analysis to Shear Testing

  11. Model Holder DesignStagnation

  12. Model Holder DesignShear

  13. Sample Test Results

  14. Conclusions • Test Methodology and Associated Hardware Developed • Successful Testing in Boeing LCAT Facility • AcquiringValidation/Verification Data for Code Development • Supporting Development of FTPS Development for HEART Vehicle • Analysis of Geometry Shape Change in Shear Testing • Continue Test Technique Development • Continue Testing In LCAT Facility

More Related