AAE 450 Spring 2008 1

Brian BudzinskiFebruary 21, 2008

Aerothermal Group ContactLifting Bodies / Pitching Moment and

Shear

Assistance from: Alex Woods

AAE 450 Spring 2008 2Aerothermal

Code: Brian Budzinski

Wing Pitching Moment Coefficient

Model:• Air launch• Initial Configuration:

Horizontal (α=0°)• Final Configuration: Vertical

(α=90°)

Assumptions:•Newtonian Model•Turbulent Flow•Unstable

Configuration•Static Center of

Mass•Moments about

Center of Mass

AAE 450 Spring 2008 3Aerothermal

Wing Shear Coefficient

Code: Brian Budzinski

Code: Brian BudzinskiFuture Work:• Double Check Validity of

Results• Further Code Integration

Assumptions:•Newtonian Model•Turbulent Flow•Shear imparted on

rocket from wing is equal to the normal force acting on the wing.

AAE 450 Spring 2008 4

Wing Normal Force Coefficient

Code: Brian Budzinski

Normal force as a function of

angle of attack for a delta wing configuration

AAE 450 Spring 2008 5

Wing Axial Force Coefficient

Code: Brian Budzinski

Axial force coefficient as a

function of angle of attack for a delta

wing configuration

AAE 450 Spring 2008 6

Code: Brian Budzinski

Fin Pitching Moment Coefficient

NOTE: Unsure about the validity of the

results

Assumptions:•Newtonian Model•Turbulent Flow•Unstable

Configuration•Static Center of

Mass•Moments about

Center of Mass

AAE 450 Spring 2008 7

Code: Brian Budzinski

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

Fin Shear Coefficient

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

Aerothermal

AAE 450 Spring 2008 9

Work OutlineAerothermal 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