Section 7: Supersonic Flow Over Flat Plates, Wedges, and Airfoils

• Supersonic Flow Over a Flat Plate
• Upper and Lower Surface Pressure Distributions
• Lift and Drag Coefficients
• Exit Conditions
• Near and Far Field Conditions
• Supersonic Pitching Moment
• Location of Aerodynamic Center
• Comparison to Subsonic Airfoil
• "Mach Tuck" Revisited

• Supersonic Flow onFinite Thickness Wings
• Symmetric Double Wedge "Diamond" Airfoil
• Supersonic Wave Drag
• Effect of Thickness Ratio on Wave Drag
• Lift/Drag Coefficients on Finite Wings
• Maximum Lift to Drag Ratio

• Effects of Wing Sweep
• Contrasting Subsonic and Supersonic Wing Sections
• Vortical Lift and the Delta Wing
• Critical Mach Number and Divergence Drag Rise
• Effect of Wing Thickness on Critical Mach Number
• Effect of Wing Sweep on Critical Mach Number
• Effect of Wing Sweep on Supersonic Airfoil
• Example Calculation

Overview of NASA Langley Supersonic/Hypersonic Arbitrary Body Program (SHABP)

Section 7 Homework Assignments

Homework 7 Assignment ...... (pdf)

• Assigned Monday November 15, 2021
• Due Monday November 29, 2021
• 10 Points Total Credit
• Part 1: Solution Hints Assume supersonic flow at probe and 10 deg. half angle, work backwards
  • ... Use Rayleigh Pitot Equation, and Shock Expansion Theory
  • You may have to iterate to get freestream solution

Homework 7 Solution Set ......

• Solution Review Video

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