Question

QUESTION 20 Assume that momentum is conserved along a flight path that does not necessarily involve a shock wave. If the Mach number changes from M, = 0.5 to M2 = 0.8 what is the static pressure change (assuming air)? O 0.712 2.848 1.424 O 1.404 None of the Above

Answer 1

given datas listeal Mach no M, 20.5 changed to final mach no Mar 6.8 assume listeal pressure=p, final pressure = P2 alross the flow m meatum is conserved. Pitsi 1,2 = P2 + S₂ V₂2 P & PI VIZ RT = P + P2 X 2 Tz V 2 ). VRT YR Picit ) = B( *+ ( Pilar Mi?) - P2 ( lt & M2²] It 2 Mp3 trM22 lar M23 2 It&M,3 = 1+(1.4x 0.82) 14 Clux

1.40H 0-712 pressure option ① change in sol P2/p, = 0.712 0.712 - Answer is