open exam - ASE 362K Quiz#2 Thursday April 26th 2007 Open...

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Unformatted text preview: ASE 362K Quiz #2 Thursday, April 26th, 2007 Open Book Part (30 points) 1) A converging—diverging nozzle has been designed for an exit Mach number of 2.5. The nozzle is exhausting to atmospheric pressure. The pressure in the stagnation chamber is 22.4 atmOSpheres. Nerd #1 claims that there will be oblique shock waves at the nozzle exit while Nerd #2 claims that there will be expansion waves. What do you think? Explain your answer (10 points) 2) A shock wave propagates along a tube into still air at atmospheric pressure and at a temperature of 288K. The shock speed, W, is 1020.5 m/s. The tube contains a hemispherically blunted cylinder model as shown. After the shock wave has passed over the model what pressure will be measured at the nose tip? (20 points) .1. 3—» ~—-- law-- .0 _ © Hue hora“: NOD Opumlrfia cal,- Hot 0(9ng Cowdlhov; H'- vow/dd 3H6“ b6 1 Po —.-_ P [’1 +CO-ZDCZ‘SDZAE’.) f— 4 E21513“, : I1-09ah; . 0k Po We owe a gem) qU-‘Tmojfolnex’o Hoe mm, “DOV/wad {w [mafia sow—W, ‘flccorfl :-'0\.V§©\:> We PrP-rounl‘e M ‘We EX”? (flame *gfl. be a‘oowa Oi Mob/k9? {C 3}} €x/pamsmv‘u NI.“ weeds-d t3 Eat/vet 1“. SPEM; Mme Nerd 2. LS CWrE‘CV‘» -‘- J ‘92.”)1 = [0‘33 Tz/T\ d" 2 Eva—c1 so {31:10 '33 at; T1 _ 77l-6K _ I)2 ML : UP/ wkw-P q1=(\6‘2l2> 0L: UP 1 W SWPID wart. \'—‘%/?T\ = I 22.3 HO 1%,) (Dz/[Z \1 :— Lf-q—‘Zé EDI»: Lf'7'16(V\/*'ufb> .5 # W\h\ W 1’ '020'§_ Hfil‘s 8‘4?) “[9 =. ' ~._ ‘7—{6/‘556-K = ('35?— ...
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