What are the failures occur in structural components of aircraft in different flight conditions?
[3 marks]Explain the role of bulkheads and longerons in detail.
[4 marks]Explain Flight Envelope (V-n diagram) with the help of neat sketch.
[7 marks]Define Neutral Axis and its significance.
[3 marks]Explain with neat sketch the state of stress at a point in three Dimensions
[4 marks]How the structure of passenger aircraft is different from fighter aircraft? Discuss in detail.
[7 marks]Explain the derivation for Bending stress in unsymmetrical section.
[7 marks]Define Principal Moment of Inertia.
[3 marks]Briefly explain about the load bearing members of wing, fuselage and empennage section with neat sketches.
[4 marks]Athin-walled circular section beam has a diameter of 200 mm and is 2 m long; it is firmly restrained against rotation at each end. Aconcentrated torque of 30 kNm is applied to the beam at its mid-span point. If the maximum shear stress is limited to 200 N/mm² and the maximum angle of twist is 2 , calculate the minimum thickness of beam walls. Take G = 25000 N/ mm².
[7 marks]What is the difference between Symmetrical Bending and Unsymmetrical Bending?
[3 marks]Explain torsion of multi cell open section beams.
[4 marks]Two cell tube shown in figure 1 subjected to a torque T=100 KN. Calculate the shear flow in q and q .12
[7 marks]Define the terms: Shear Centre, Shear Flow.
[3 marks]Write the basic equations of equilibrium, compatibility and stress-strain relations for plane stress condition in polar coordinate system.
[4 marks]State the difference between Stiffness and Flexibility Methods of Structural Analysis.
[7 marks]Explain the Saint Venant’s Principle for 2D beam problems.
[3 marks]Explain displacement associated with Bredt-Batho Shear flow for closed sections.
[4 marks]Determine the value of the redundant for the beam shown in the Figure-2 using Flexibility Method.1
[7 marks]Enlist the assumptions considered while analyzing the beams for unsymmetrical bending.
[3 marks]Define Flexibility and state the characteristics of Flexibility Matrix.
[4 marks]Derive the equation for the shear flow of open section.
[7 marks]Write down the difference between torsion of open and closed Sections.
[3 marks]Explain the State of Plane Stress.
[4 marks]Calculate the value of member end reactions for the beam shown in Figure- 3 using Stiffness System Approach. EI=constant. Figure-1 Figure-2 Figure-3
[7 marks]