Download PTU B.Tech 2020 March Aero 7th and 8th Sem ASPE 410 Applied Gas Dynamics Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech Aero (Aerospace-Engg) 2020 March 7th and 8th Sem ASPE 410 Applied Gas Dynamics Previous Question Paper

1 | M-72573 (S2)-2426
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(Aerospace Engg.) (Sem.? 8)
APPLIED GAS DYNAMICS
Subject Code : ASPE-410
M.Code : 72573
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
4. Use of calculator and gas tables is permitted.

SECTION-A
Q1. Explain briefly :
a) Shock induced flow separation
b) Detached shocks
c) Friction constant
d) De Laval Nozzle
e) Drag divergence
f) Prandtl - Meyer expansion fan
g) Small perturbation theory
h) Similarity rules
i) Real fluids
j) Mach reflection

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1 | M-72573 (S2)-2426
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(Aerospace Engg.) (Sem.? 8)
APPLIED GAS DYNAMICS
Subject Code : ASPE-410
M.Code : 72573
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
4. Use of calculator and gas tables is permitted.

SECTION-A
Q1. Explain briefly :
a) Shock induced flow separation
b) Detached shocks
c) Friction constant
d) De Laval Nozzle
e) Drag divergence
f) Prandtl - Meyer expansion fan
g) Small perturbation theory
h) Similarity rules
i) Real fluids
j) Mach reflection

2 | M-72573 (S2)-2426
SECTION-B
Q2 Derive expression for ? ?- ?-M relation?. (5)
Q3 Explain shock polar diagram. Also explain dimensionless shock polar. (3,2)
Q4 What is Prandtl ? Glauert (P-G) rule? Calculate lift curve slope of a profile at M
?
= 0.32
using P-G rule for the following given data:
C
L
= 0.2 at ? = 3? and C
L
= -0.1 at ? = -2?. (2,3)
Q5 What do you mean by ?potential equation and its linearization?? (5)
Q6 Explain briefly the optical methods of flow visualization. (5)

SECTION-C
Q7 A flat plate is kept at 20? angle of attack to a supersonic stream at Mach 2.4. Solve the
flow field around the plate and determine the inclination of slipstream to the freestream
direction using shock-expansion theory. (10)
Q8 A De Laval nozzle has to be designed for an exit Mach Number of 1.5 with exit diameter
of 20 cm. Find the necessary ratio of throat area to exit area. The reservoir conditions are
given as p
0
= 1 atmg and 20 ?C. Also, find the maximum mass flow rate through the
nozzle. What will be the exit pressure and temperature? (3,3,2,2)
Q9 Explain the following with the help of neat and labelled diagrams : (5,5)
a) Shock tube
b) Rayleigh Flow




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