Aerospace Structures

Sections :

• Loads on Aircraft
  • The different types of loads exerted on an aircraft are briefly explained. These loads include both aerodynamic and manoeuvre loads.
• Function of Structural Components
  • An aircraft is made from many different components. Each component has a specific function but form an integral whole.
• Bending Of Beams With Non-Symmetrical Cross Section
  • Establishment of sign convention for an arbitrary beam section. The Effective Bending Moment and the Effective Shear Forces are defined and derived. An example is given.
• Stress, Strain and Displacement Relationship for Open and Closed Single CellThin-Walled Beams
  • Concept of Shear Flow is introduced. The Shear Centre of an open beam section, twist and
    warping of a closed beam section are explained through an example.
• Torsion of Thin Walled Beam Sections
  • The application of a torque on a closed or open section beam produces warping. This section attempts to illustrate the characteristics of such a distribution by using an open beam section.
• Structural Idealization
  • Idealization of a wing section is performed to calculate the stresses on the stringers and shear on the skin.This can be done using nodes to represent the stringers. Spread sheet examples are given.
• Multicell Beams
  • The wing section can be divided into multiple cells with applied torques. Method of determining Rate of Twist and Shear Flow distribution is shown in an example.
• Tapered Beams
  • A real wing on an aircraft is often swept and tapered. This section shows the method of determining the shear flow on an idealized tapered wing.
• Aeroelasticity
  • The dynamic effects of the interaction of wing loads and wing elasticity can lead to large deformations. This section shows a simple method of determining the interactions assuming the wing has a very long span with constant cross-section.