Download PTU B.Tech 2020 March Aero 5th Sem ANE 315 Aircraft Performance Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech Aero (Aerospace-Engg) 2020 March 5th Sem ANE 315 Aircraft Performance Previous Question Paper

1 | M-60524 (S2)-705
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ANE) (Sem.?5)
AIRCRAFT PERFORMANCE
Subject Code : ANE-315
M.Code : 60524
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.

SECTION-A
1. Attempt the following :
a) Define ?Wing loading? and explain its importance.
b) Distinguish between ?Range? and ?Endurance?.
c) Define ?Aerodynamic Center? & ?Center of Pressure?
d) Distinguish between ?Geometric? and ?Geo-potential? altitude.
e) Distinguish between ?Isothermal? and ?Gradient? regions.
f) Distinguish between ?Washin? and ?Washout?.
g) Distinguish between ?Chord line? and ?Camber line?.
h) Define ?Temperature altitude?.
i) Define ?Drag divergence Mach number? and explain its importance.
j) Define ?zero-lift? angle of attack.


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1 | M-60524 (S2)-705
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ANE) (Sem.?5)
AIRCRAFT PERFORMANCE
Subject Code : ANE-315
M.Code : 60524
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.

SECTION-A
1. Attempt the following :
a) Define ?Wing loading? and explain its importance.
b) Distinguish between ?Range? and ?Endurance?.
c) Define ?Aerodynamic Center? & ?Center of Pressure?
d) Distinguish between ?Geometric? and ?Geo-potential? altitude.
e) Distinguish between ?Isothermal? and ?Gradient? regions.
f) Distinguish between ?Washin? and ?Washout?.
g) Distinguish between ?Chord line? and ?Camber line?.
h) Define ?Temperature altitude?.
i) Define ?Drag divergence Mach number? and explain its importance.
j) Define ?zero-lift? angle of attack.


2 | M-60524 (S2)-705
SECTION-B
2. Calculate the standard atmospheric values of T, p and ? at a geo-potential altitude of
18 km. Assume Lapse rate of ?6.5 K/km in the gradient region. (1,2,2)
3. Explain ?Delta Wing Aerodynamics? at Low Speed with the help of labeled
illustration/plots. (5)
4. Derive the expression for lift coefficient and drag coefficient for minimum power
condition. (5)
5. Define and explain various high lift devices. Show their effect on lift curve slopes. (5)
6. Derive the expression for take-off distance. (5)

SECTION-C
7. Gulfstream-IV twin turbofan executive transport with weight of 200000N, planform area
of 80 m
2
and drag polar as C
D
= 0.015 + 0.08C
L
2
is flying at an altitude of 10 km
( ? = 0.413 kg/m
3
). Calculate :
a) (C
L
3/2
/C
D
)
max
, (C
L
/C
D
)
max
and (C
L
1/2
/C
D
)
max
values. (5)
b) Velocities at which (C
L
3/2
/C
D
)
max
, (CL/C
D
)
max
and (C
L
1/2
/C
D
)
max
occur. (5)
8. Write notes on the following :
a) Drag and its categorization (5)
b) V/STOL vehicles (5)
9. Define 4-digit, 5-digit and 6-digit NACA series airfoils. What are laminar and
supercritical airfoils? Where are these airfoils used? (6, 4)

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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