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Aerothermal

Brian Budzinski February 21, 2008 Aerothermal Group Contact Lifting Bodies / Pitching Moment and Shear Assistance from: Alex Woods. Wing Pitching Moment Coefficient. Assumptions: Newtonian Model Turbulent Flow Unstable Configuration Static Center of Mass Moments about Center of Mass.

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Aerothermal

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  1. Brian BudzinskiFebruary 21, 2008Aerothermal Group ContactLifting Bodies / Pitching Moment and ShearAssistance from: Alex Woods AAE 450 Spring 2008

  2. Wing Pitching Moment Coefficient • Assumptions: • Newtonian Model • Turbulent Flow • Unstable Configuration • Static Center of Mass • Moments about Center of Mass • Model: • Air launch • Initial Configuration: Horizontal (α=0°) • Final Configuration: Vertical (α=90°) Code: Brian Budzinski AAE 450 Spring 2008 Aerothermal

  3. Wing Shear Coefficient • Assumptions: • Newtonian Model • Turbulent Flow • Shear imparted on rocket from wing is equal to the normal force acting on the wing. • Future Work: • Double Check Validity of Results • Further Code Integration Code: Brian Budzinski Code: Brian Budzinski AAE 450 Spring 2008 Aerothermal

  4. Wing Normal Force Coefficient Normal force as a function of angle of attack for a delta wing configuration Code: Brian Budzinski AAE 450 Spring 2008

  5. Wing Axial Force Coefficient Axial force coefficient as a function of angle of attack for a delta wing configuration Code: Brian Budzinski AAE 450 Spring 2008

  6. Fin Pitching Moment Coefficient • Assumptions: • Newtonian Model • Turbulent Flow • Unstable Configuration • Static Center of Mass • Moments about Center of Mass NOTE: Unsure about the validity of the results Code: Brian Budzinski AAE 450 Spring 2008

  7. Fin Shear Coefficient • Assumptions: • Newtonian Model • Turbulent Flow • Shear imparted on rocket from fins is equal to the normal force acting on the fins. NOTE: Unsure about the validity of the results Code: Brian Budzinski AAE 450 Spring 2008

  8. References: • (1) Hankey, Wilbur L. “Re-Entry Aerodynamics” AIAA, Washington D.C., 1988, pp. 70-73. • (2) AAE 450 Senior Design Class: Spring 2007, "Project Aquarius" • (3) Rhode, M.N., Engelund, W.C., and Mendenhall, M.R. “Experimental Aerodynamic Characteristics of the Pegasus Air-Launched Booster and Comparisons with Predicted and Flight Results” AIAA 95-1830, June 1995 AAE 450 Spring 2008 Aerothermal

  9. Work Outline Aerothermal Group Contact • Interface between groups • Interface within group CFD • CATIA Model • Gambit Mesh • FLUENT Lifting Bodies • Wing -CD, CL, CM, Shear • Fins -CD, CL, CM, Shear AAE 450 Spring 2008

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