In The Name of GOD
Sharif University
of Technology
Department of Aerospace Engineering
|
Sharif University
of Technology Department of Aerospace Engineering |
Aerospace Structural Design
Aero-45137
Instructor
Hassan Haddadpour (Haddadpour@sharif.edu)
Objectives
The course is structured to provide a thorough understanding of the
different design concerns, loads, and analysis techniques that are associated
with light-weight air vehicle (aircraft, helicopters) and space vehicles
(launch vehicles, spacecraft). The course material is presented for the design
and analysis of "minimum-weight" structures, so that applications to
other structural systems can easily be drawn. The course builds upon a student
ability to apply principles of mathematics, strength of materials, and
structural mechanics to design and analyze aerospace structural components,
assemblies and systems. The design project emphasizes functioning in teams to
design (build and test if possible) aerospace structural components, whereas
the homework assignments, project reports and presentations build skills in
written and verbal communication. The aspects of professional responsibility
and ethics are emphasized through classroom discussions relating to real world
applications.
Topics
1) Introduction
·
History of Aerospace Structures
·
Design Organizations
·
Structural Design Processes
2) Loading
·
V-n Diagram
·
Wing Loads
·
Tail Loads
·
Landing Loads
·
Fuselage Loads
3) Materials
·
Mechanical and Physical Property of Materials
·
Toughness and Crack Growth Rate
·
Material Usage and Selection Procedures
4) Failure
Analysis
·
Principle Stresses
·
Failure Criteria for Steady and Variable Loading
·
Cumulative Fatigue Damage
5) Structural Instability
·
Buckling of Beams
·
Crippling Stresses
·
Buckling of Panels and Stiffened Panels
6) Design and
Analysis of Typical Aerospace Structures
·
Review of Elasticity
·
Wing Design
·
Fuselage Design
·
Cut-out Design
(in Spars and Ribs)
·
Pressure Vessel
Design
7) Structural
Joints
·
General Information
·
Splices
·
Lug Joints
8) Structural Dynamics and Aeroelasticity
·
Wing Divergence
·
Wing Flutter
Grading
The final grade will be calculated as follows:
·
Weekly home-work (15%)
·
Quizzes (10%)
·
Design project (20%)
·
Mid-Term Exam (20%)
·
Final Exam (35%)
Outcomes
Students who successfully complete the course will
demonstrate the following outcomes:
·
Become familiar with
aerospace structures and the corresponding loading
·
An ability to function on
multidisciplinary teams
·
Explain the basic
considerations of structural design
·
Design/specify a
structural configuration using basic structural elements in order to meet
specified need
Related Web
Sites
http://adg.stanford.edu/aa241/AircraftDesign.html
http://www.aoe.vt.edu/aoe/faculty/Mason_f/SD1.html
http://roger.ecn.purdue.edu/~weisshaa/aae451/index.html
Textbook
Although it is possible to follow the course by using the extensive class notes and any additional notes taken by students, it is suggested that students learn to refer to alternate sources. Furthermore, these books serve as more permanent and referencable material than class notes:
1.
Michael C. Y. Niu, Airframe Structural Design: Practical Design Information
and Data on Aircraft Structures, Conmilit Press Ltd,
1999.
Other References
2.
Michael C. Y. Niu, Airframe Stress Analysis and Sizing,
Conmilit Press Ltd, 2001.
3.
T.H.G. Megson, Aircraft structures for engineering students, Edward Arnold, 1990.
4.
Perry D. J., Azar, J. J., Aircraft
Structures, McGraw-Hill, 1982.
5.
Bruhn, Analysis & Design of
Flight Vehicle Structures, Jacobs & Associates, Inc. 1973.
6. Ted L. Lomax, Structural Loads Analysis for Commercial Transport Aircraft: Theory and Practice, AIAA Education Series, 1996.