GTU BE 8th Semester 2180101 Aircraft Design II Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?VIII (NEW) – EXAMINATION ? SUMMER 2018
Subject Code: 2180101 Date: 04/05/2018
Subject Name: Aircraft Design II
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Attempt Q-1 in drawing sheet.

MARKS
Q.1 (a) Draw a layout/Top view of Horizontal stabilizer/
Stabilator. Tail moment arm is 40 feet. Wing area is
1600 ft
2
. Taper ratio is 0.4. Aspect ratio is 5. Max mach
number is 0.89. Tail Volume coefficient of Horizontal
stabilizer/ Stabilator is 1. (Note: Consider all dimensions for Horizontal stabilizer)03
(b) Drawd a side view of vertical fin. Tail moment arm is 40
feet. Wing area is 1600 ft
2
. Taper ratio is 0.3. Aspect
ratio is 2. Max mach number is 0.89. Tail Volume
coefficient of vertical fin is 0.09.
04
(c) Prepare a layout of starboard wing. Root chord is 16 feet.
Tip chord is 4 feet. Wing span is 80 feet. Sweep back
angle is 25?. Mention MAC, GAC, CG range, Neutral
point.
07

Q.2 (a) With neat sketch explain how will you improve radar
detectability.
03
(b) What are the effects of base distance and track distance
on ground maneuvering of tricycle wheel configuration?
04
(c) How many maneuvering will you consider wing
loading?
07
OR
(c) With neat sketch explain conic lofting technique for
fuselage.
07
Q.3 (a) Describe aural signature. 03
(b) How will you reduce visual detectability of aircraft? 04
(c) Explain difference between vulnerability and
sustainability of a multi role fighter jets.
07
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?VIII (NEW) – EXAMINATION ? SUMMER 2018
Subject Code: 2180101 Date: 04/05/2018
Subject Name: Aircraft Design II
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Attempt Q-1 in drawing sheet.

MARKS
Q.1 (a) Draw a layout/Top view of Horizontal stabilizer/
Stabilator. Tail moment arm is 40 feet. Wing area is
1600 ft
2
. Taper ratio is 0.4. Aspect ratio is 5. Max mach
number is 0.89. Tail Volume coefficient of Horizontal
stabilizer/ Stabilator is 1. (Note: Consider all dimensions for Horizontal stabilizer)03
(b) Drawd a side view of vertical fin. Tail moment arm is 40
feet. Wing area is 1600 ft
2
. Taper ratio is 0.3. Aspect
ratio is 2. Max mach number is 0.89. Tail Volume
coefficient of vertical fin is 0.09.
04
(c) Prepare a layout of starboard wing. Root chord is 16 feet.
Tip chord is 4 feet. Wing span is 80 feet. Sweep back
angle is 25?. Mention MAC, GAC, CG range, Neutral
point.
07

Q.2 (a) With neat sketch explain how will you improve radar
detectability.
03
(b) What are the effects of base distance and track distance
on ground maneuvering of tricycle wheel configuration?
04
(c) How many maneuvering will you consider wing
loading?
07
OR
(c) With neat sketch explain conic lofting technique for
fuselage.
07
Q.3 (a) Describe aural signature. 03
(b) How will you reduce visual detectability of aircraft? 04
(c) Explain difference between vulnerability and
sustainability of a multi role fighter jets.
07

2

OR
Q.3 (a) Explain longitudinal contour lines for fuselage layout. 03
(b) Very shortly explain cyclic and collective pitch. 04
(c) Explain applications of circle to square adaptors in jet
fighters.
07
Q.4 (a) How will you determine size of rudder? 03
(b) With neat sketch explain crew station design of a jet
fighter aircraft.
04
(c) Discuss maintainability of aircraft. How will you
improve maintainability?
07
OR
Q.4 (a) How will you determine size of elevator? 03
(b) With neat sketch explain passenger cabin design of a jet
transport aircraft.
04
(c) Discuss techniques to protect passengers at the time of
crash in public transport aircrafts.
07
Q.5 (a) On which basis will you choose wheel arrangements? 03
(b) How will you determine size of ailerons? 04
(c) Discuss structural considerations of a monocoque
fuselage aircrafts.
07
OR
Q.5 (a) Shortly explain any one type of under carriage retraction
geometry.
03
(b) Very shortly explain wing lofting technique. 04
(c) Discuss Aerodynamic considerations of empennage
mounted engine aircraft.
07
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