Abstract
Two high profile experimental studies designated 66CH and 123CH and consisting of over 200 test points, has been completed by the CUBRC Aerosciences group for NASA Johnson Space Center (JSC) obtaining detailed heat flux results over two 5% scale, high fidelity, models of the Multi Purpose Crew Vehicle (MPCV) ORION capsule backshell and heat shield. The primary purpose of the 66CH and 123CH test programs was to obtain the thermal environment and augmentation, or “bump”, factors in critical acreage and cavity locations on high fidelity experimental models of the MPCV backshell with and without reaction control jet (RCS) interaction effects. These results are primarily employed by the NASA JSC technical team to develop detailed heating environments to supply to the prime contractor, Lockheed Martin, for the design and verification of the flight vehicle. The NASA technical team also computationally made comparisons to the results to assess the capabilities of current computational tools to predict the flow in the regions of wakes, cavities, and jet interaction in hypersonic freestream flow.
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