GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (NEW) EXAMINATION - SUMMER 2019
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Subject Code: 2150103 Date: 31/05/2019
Subject Name: Aircraft Structures II
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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MARKS
Q.1 (a) What are the failures occur in structural components of aircraft in different flight conditions? 03
(b) Explain the role of bulkheads and longerons in detail. 04
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(c) Explain Flight Envelope (V-n diagram) with the help of neat sketch. 07
Q.2 (a) Define : Plane stress, plane strain 03
(b) Explain the loads acting on an aircraft for different flight conditions with neat sketches. 04
(c) Define Neutral Axis; Derive the equations for direct bending stress distribution. Also sketch the direct bending stress distribution of an I-section. 07
OR
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(c) Derive equation of equilibrium for 3D elastic body. 07
Q.3 (a) Enlist the different ways of making the section free from torsion. 03
(b) Derive compatibility equation. 04
(c) Calculate the value of reactions for the continuous beam shown in below Figure using Stiffness System Approach. 07
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