MTech Aerospace Structures syllabus for 2 Sem 2020 scheme 20MAP243

Structural Components and Loads of Aerospace components:

Loads on Structural components, Function of structural components, Fabrication of structural components, Connections; Airworthiness: Factors of Safetyflight envelope, Load factor determination, Airframe loads: Aircraft inertia loads, Symmetric maneuver loads, Normal accelerations associated with various types of maneuvers, Gust loads

Shear Flow and Shear Center in Open and Closed Thin Wall Sections Open Sections:

Shear center and elastic axis, Concept of shear flow, Beams with one axis of symmetry; Closed Sections: Bradt-Batho formula, Single and multi-cell closed box structures, Semi monocoque and mono cocque structures, Shear flow in single and multi-cell monocoque and semimonocoque box beams subject to torsion.

Thin Plate Theory Bending of thin plates:

Pure bending of thin plates, Plates subjected to bending and twisting, Plates subject to distributed transverse load, Combined bending and in-plane loading of a thin rectangular plate, Bending of thin plates having a small initial curvature, Energy method for bending of thin plates structural instability in thin plates Buckling of thin plates, Inelastic buckling of plates, Experimental determination of critical loads for a flat plate, Local instability, Instability of stiffened panels, Failure stress in plates and stiffened panels, Tension field beams.

Bending, Shear and Torsion of Thin-Walled Beams-I Bending and Open Thin-Walled Beams:

Symmetrical bending, Unsymmetrical bending, Deflections due to bending, Calculation of section properties, Applicability of bending theory, Temperature effects bending, shear and torsion of thin-walled beams-II Shear of Beams: General stress, strain and displacement relationships for open and single cell closed section thin-walled beams, Shear of open and closed section beams; Torsion of Beams: Torsion of closed and open section beams; Combined Open and Closed Section Beams: Bending, Shear, Torsion

Stress Analysis of Aircraft Components Wing spars, Fuselages, Wings, Fuselage frames and wing ribs, Laminated composite structures smart materials and adaptive structures Smart Materials Technologies and Control Applications: Control requirements, Smart Materials Piezoelectric elements, Electrostrictive elements, Magentostrictive transducers, Electrorheological fluids, Shape memory alloys, Fiber optic sensors, Applications of smart materials, Adaptive Structures: Adaptive aerospace structures-Structural Health Monitoring

Course outcomes:

At the end of the course the student will be able to:

1. Identify the problems of aero structures.

2. Evaluate the importance of theories on sections of aero structures.

3. Analyze the aircraft structures.

Question paper pattern:

The SEE question paper will be set for 100 marks and the marks scored will be proportionately reduced to 60.

• The question paper will have ten full questions carrying equal marks.
• Each full question is for 20 marks.
• There will be two full questions (with a maximum of four sub questions) from each module.
• Each full question will have sub question covering all the topics under a module.
• The students will have to answer five full questions, selecting one full question from each module.

Textbook/ Textbooks

1 Analysis & Design of Flight Vehicle Structures E.F. Bruhn Tristate Offset Co., 1980

2 Aircraft Structures for Engineering Students Megson, T.M.G Edward Arnold 1995

3 Mechanics of Composite Materials Autar K. Kaw CRC Press LLC 1997

Reference Books

1 Aircraft Structures Peery, D.J. and Azar, J.J McGraw-Hill, New York 2nd Edition 1993

2 Theory and Analysis of Flight structures Rivello, R.M McGraw-Hill, N.Y 1993

3 Analysis and Performance of fiber composites B.D. Agarwal and L.J. Broutman John-Wiley and Sons 1990