Return to Flight Testing of a 3.5% Scale Space Shuttle OTS and OT Model at Mach Numbers of 3.5 and 4.0

Wadhams, Timothy; MacLean, Matthew; Holden, Michael; Smolinski, Gregory J.

doi:10.2514/6.2006-720

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…Second, the small size allows for a very spatially localized measurement to be made in a region of high gradient heating. A good example of the application of these gages is shown in the recent tests of the NASA Shuttle Orbiter ascent configuration 32 , where tiny, scaled bipod feet on the main tank were constructed by CUBRC technicians from Macor and instrumented with approximately 40 individual thin-film gages each to obtain unprecedented localized heating rates on each facet of the bipod foot region. The main disadvantage of this type of instrumentation is its fragility, as evidenced in the first phase of MSL testing.…”

Section: Instrumentation/modelmentioning

confidence: 99%

Catalytic Effects on Heat Transfer Measurements for Aerothermal Studies with CO2

MacLean

Holden

2006

44th AIAA Aerospace Sciences Meeting and Exhibit

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An investigation has been performed at CUBRC using the LENS facilities to study the behavior of surface heating augmentation due to catalytic surface recombination for carbon dioxide and air test gases. Three types of heat transfer instrumentation have been employed on a model that shows definitive heating enhancement which can only be caused by the effect of surface catalysis. The measured heat transfer data from all types of instrumentation correlate well with CFD predictions in baseline non-catalytic flows, but show consistently higher heating levels than can be predicted with a non-catalytic wall in a catalytic environment. A similar effect has been documented in air with atomic oxygen and nitric oxide recombination. The successful demonstration and understanding of this behavior is critical to optimum heat shield/TPS systems design for future Martian entry applications.

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Section: Instrumentation/modelmentioning

confidence: 99%

Catalytic Effects on Heat Transfer Measurements for Aerothermal Studies with CO2

MacLean

Holden

2006

44th AIAA Aerospace Sciences Meeting and Exhibit

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“…Two types of sensors that can be used to measure surface heat flux are coaxial thermocouple gages and thin film resistance thermometers. Individually, both types of gages have been used successfully in a number of studies [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Both thermocouple and thin film gages measure surface temperature from which heat transfer can be calculated.…”

mentioning

confidence: 99%

Comparative Surface Heat Transfer Measurements in Hypervelocity Flow

Flaherty

Austin

2011

Journal of Thermophysics and Heat Transfer

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“…CUBRC has conducted programs with the models illustrated in Figure 30 and made major contributions with unique measurements (Refs. [13][14][15][16][17]. Currently, we are supporting NASA in its development of the Orion Capsule with experimental studies of the aerothermal loads on the Heatshield and the Back Shell shown in Figure 31.…”

Section: Experimental Programs In Support Of the Nasa's Orion And Amentioning

confidence: 99%

Experimental Research and Analysis in Supersonic and Hypervelocity Flows in the LENS Shock Tunnels and Expansion Tunnel

Holden¹

2015

20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference

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A review is presented of the experimental research and supporting numerical activities to examine key problems in supersonic and hypervelocity flows in the LENS shock and expansion tunnels. A description is presented of the basic operation and performance of the LENS shock and expansion tunnels and the test conditions which can be obtained in them. Experimental studies performed to examine viscous interaction phenomena and non-equilibrium flow chemistry in hypervelocity low density and laminar flows are reviewed together with the results of a "blind" validation/ evaluation study to compare the results of experimental studies in high temperature separated shock interaction regions with CFD predictions using state of the art chemistry models. We then summarize the studies being conducted to examine the characteristics of boundary layer transition and transitional flows over blunt and slender re-entry vehicles. A summary is presented of experimental research to examine the characteristics of regions of shock wave/ turbulent boundary layer interactions at flight Reynolds number and velocities and comparisons with CFD predictions using state of the art turbulence models are discussed. We review the programs at CUBRC in support of NASA's Space Program. Finally, some of the experimental studies being conducted in the LENS facility to examine the combusting flows associated in dual-mode ram/scram air breathing engines are presented. I LENS Facilities Performance and Experimental ProgramsThe LENS ground test facilities were built with the objective of duplicating the velocity/ altitude conditions in which to test full scale test vehicles at hypervelocity clean air conditions. Clearly, this also enables us to perform fundamental studies to evaluate the modeling of turbulence and chemistry employed in CFD prediction methods at flight conditions. To achieve realistic flight-like conditions, we employ the CUBRC large shock tunnels and expansion tunnels to generate the pressures and temperatures in the test gas to obtain measurements at Mach numbers between 3.5 and 30 at enthalpies up to 22 MJ/kg (Ref 1). Figure 1 shows photographs of the LENS tunnels and an Altitude/ Velocity Map of their performance with the duplicated flight conditions at which some important studies were performed.Downloaded by UNIVERSITY OF ILLINOIS on October 1, 2015 | http://arc.aiaa.org |

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Return to Flight Testing of a 3.5% Scale Space Shuttle OTS and OT Model at Mach Numbers of 3.5 and 4.0

Cited by 9 publications

References 3 publications

Catalytic Effects on Heat Transfer Measurements for Aerothermal Studies with CO2

Catalytic Effects on Heat Transfer Measurements for Aerothermal Studies with CO2

Comparative Surface Heat Transfer Measurements in Hypervelocity Flow

Experimental Research and Analysis in Supersonic and Hypervelocity Flows in the LENS Shock Tunnels and Expansion Tunnel

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