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Next: Computer Program Up: Prandtl-Meyer Function Previous: Examples For Prandtl-Meyer Function   Index

# Combination of the Oblique Shock and Isentropic Expansion

Solution

For the following table can be obtained
 3.3000 62.3113 0.01506 0.37972 0.03965 73.1416
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With the angle of attack the region 3 will at for which the following table can be obtain (Potto-GDC)

 3.4996 66.3100 0.01090 0.35248 0.03093 74.0528
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On the other side the oblique shock (assuming weak shock) results in

 3.3000 0.43534 3.1115 88.9313 20.3467 4.0000 0.99676
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And the additional information by clicking on the minimal button provides

 3.3000 3.1115 20.3467 4.0000 1.1157 1.1066 0.99676
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The pressure ratio at point 3 is

The pressure ratio at point 4

This shows that on the expense of a small drag, a large lift can be obtained. Discussion on the optimum design is left for the next versions.

Next: Computer Program Up: Prandtl-Meyer Function Previous: Examples For Prandtl-Meyer Function   Index
Created by:Genick Bar-Meir, Ph.D.
On: 2007-11-21