Question

6.A two-dimensional, flat plate is inclined at a positive angle of attack in a supersonic air stream of Mach 2.0 (Figure P7.6). Below the plate, an oblique shock wave starts at the leading edge, making an angle of 42° with the stream direction. On the upper side, an expansion occurs at the leading edge. (a) Find the angle of attack of the plate. (b) What is the pressure on the lower surface of the plate? (c) What is the pressure on the upper surface of the plate? M 2.0 p 50 kPa 420

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Answer 1

Pago no: Dale: M-2.0 PE50KPA 42 (a) Fimd the amgle of attach AOA F&om the sblique shock Relations O42 180-42 : 138 W 2.0 S1-2 12.3589 So 11 (b)ulhat i the Peesuts on the louur uklace of Plate Mm-(9.0) Sim (42) Mn - 1.33 83 2 Y m2 sim2 V+T y-1 P2 P 2 2 YMn P2 Yナ」 P2 .922 8 50

Date: l1-9 228250 96 14 k Pa Cc ushat itthe Peessure on the ubbet suelace a Plati 2 At m=2.0 V 26 3798 Sina the flous be tutmid theauah the same amaunt as on en the tob of the Plati muit bottem moy ueeite; 26.279 &+12-358 9 V3 - Vi+S1-2 38-T3 8 with thir alu of Pramdtl- Maye lunctien ue find M3-2.4 & 36 Llour thraugh_the inbamsiom Nous becauli the is isimts&obic SO Porz Pa3 O1278 Po3 PoL Po O.06004 PoL P 3 Po3 エ0.4698 O1278 P P 23 4900 K Pa Paz Co.4698) 50
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