Debris Transport Modeling Techniques on Launch Vehicle Systems

Applebaum, Michael; Eppard, Marc

doi:10.2514/6.2011-1112

Cited by 3 publications

(3 citation statements)

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“…We note that the windward panel (2) is of primary interest in these plots since it always travels closest to the body and is the limiting factor in terms of panel clearance. The plot for Case 1 shows very good agreement between the interpolated result and QUICDyn for the side panel (3) and the windward panel (2). The leeward panel (1) exhibits a slight difference further downstream near the aft end of the vehicle.…”

Section: Coupled Sm Panel Data/6-dof Simulationssupporting

confidence: 58%

“…Case 5 is the averaged freestream condition simulation. This case shows very good agreement for the windward panel (2) and the side panel (3). However, the leeward panel (1) results diverge slightly near the front frustum.…”

Section: Coupled Sm Panel Data/6-dof Simulationsmentioning

confidence: 55%

“…For this case, there is negligible difference between the database and QUICDyn. Case 4 again shows excellent agreement between the side panel (3) and the windward panel (2). The leeward panel (1) does exhibit some difference between the two methods.…”

Section: Coupled Sm Panel Data/6-dof Simulationsmentioning

confidence: 57%

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Development of an Aerodynamic Analysis Method and Database for the SLS Service Module Panel Jettison Event Utilizing Inviscid CFD and MATLAB

Applebaum

Hall

Eppard

et al. 2015

53rd AIAA Aerospace Sciences Meeting

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This paper describes the development, testing, and utilization of an aerodynamic force and moment database for the Space Launch System (SLS) Service Module (SM) panel jettison event. The database is a combination of inviscid Computational Fluid Dynamic (CFD) data and MATLAB code written to query the data at input values of vehicle/SM panel parameters and return the aerodynamic force and moment coefficients of the panels as they are jettisoned from the vehicle. The database encompasses over 5000 CFD simulations with the panels either in the initial stages of separation where they are hinged to the vehicle, in close proximity to the vehicle, or far enough from the vehicle that body interference effects are neglected. A series of viscous CFD check cases were performed to assess the accuracy of the Euler solutions for this class of problem and good agreement was obtained. The ultimate goal of the panel jettison database was to create a tool that could be coupled with any 6-Degree-Of-Freedom (DOF) dynamics model to rapidly predict SM panel separation from the SLS vehicle in a quasi-unsteady manner. Results are presented for panel jettison simulations that utilize the database at various SLS flight conditions. These results compare favorably to an approach that directly couples a 6-DOF model with the Cart3D Euler flow solver and obtains solutions for the panels at exact locations. This paper demonstrates a method of using inviscid CFD simulations coupled with a 6-DOF model that provides adequate fidelity to capture the physics of this complex multiple moving-body panel separation event.

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Section: Coupled Sm Panel Data/6-dof Simulationssupporting

confidence: 58%

Section: Coupled Sm Panel Data/6-dof Simulationsmentioning

confidence: 55%