Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2170101 Aircraft Design I Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2170101 Date:19/01/2021
Subject Name:Aircraft Design I
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Make sketches by drawing instruments only
MARKS
Q.1 (a) Define Maximum take-off weight, fuel weight, and basic empty
03
weight.
(b) Explain flight envelope of any one type of aircraft.
04
(c) Explain three phases of aircraft design.
07
Q.2 (a) Explain importance of structure factor in aircraft design.
03
(b) Discuss relationship between fuel quantity and range.
04
(c) Explain how maximum take off weight is determined.
07
Q.3 (a) Explain how to set fraction of size of horizontal and vertical
03
stabilizer.
(b) Draw and explain geometry of tricycle type landing gear.
04
(c) Discuss under carriage retraction geometry of a low wing, dihedral
07
jet transport aircraft having sweep back angle of 230.
Q.4 (a) Only draw side view of an under carriage geometry of tail wheel
03
aircraft.
(b) Explain how to set size of rudder.
04
(c) Discuss the effects of taper ratio and aspect ratio on flight
07
performance.
Q.5 (a) Explain airfoil selection for tail plane.
03
(b) Explain effects of T/W ratio on flight performance.
04
(c) Discuss the effects of taper ratio and aspect ratio of vertical fin on
07
spin recovery.
Q.6 (a) Explain procedure to select engine and T/W ratio.
03
(b) How will you design vertical fin? Discuss with respect to tail plane
04
volume.
(c) Which considerations will you take to select tail plane configuration?
07
Q.7 (a) Only draw possible tail plane configuration of single engine jet
03
fighter empennage.
(b) Classify types of engines used in supersonic aircrafts.
04
(c) Explain conventional and co-axial rotor configuration.
07
1
Q.8 (a) Shortly explain function of main and tail rotor in conventional
03
helicopter.
(b) What different types of airfoils are used for construction of main rotor
04
and tail rotor blades of helicopters?
(c) With neat sketch explain cyclic and collective pitch controls of
07
conventional helicopter.
*************
2
This post was last modified on 04 March 2021