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Q1. Using shock-expansion theory to design a diamond shaped airfoil with semi-angle of ε = 15° and can produce at least 1500 lb of lift force per foot of span with an angle of attack of 5°. The upstream Mach number is 2.0 and the upstream pressure is 2116 lb/ft2.
- Plot the diagram of the system (must show the direction of flow and airfoil)
- Choose appropriate t (see Fig 4.35) and find l, that can produce at least x lb of lift force per foot of span
- Plot curves of lift and drag forces for the airfoil when the angle of attack varies from 0 ° to 30 ° (two figures: one for lift force and one for drag force).
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