Page 295 - 48Fundamentals of Compressible Fluid Mechanics

14.8. COMBINATION OF THE OBLIQUE SHOCK AND ISENTROPIC EXPANSION257

for which the following
table can be obtain (Potto-GDC) S - U W T
With the angle of attack the region 3 will at *

O
*
S
T
P
Q
UU
J
Q I K
On the other side the oblique shock (assuming weak shock) results in I

K K U

c PRQ PRQ K K J U
P Q K

O
O
O
U
K U J
II
And the additional information by clicking on the minimal button provides

c P S S U PRQ PRQ U

O
O
P U K K J U
The pressure ratio at point 3 is J

U J

. . .

The pressure ratio at point 4 K U -% J I -

.
J

.

J

.

-

J I K

J

.
.
This shows that on expense of small drag large lift can be obtained. Question of

J I

optimum design what is left for the next versions.

"