FIXED-WING AIRCRAFT
The principal structural units of a fixed-wing aircraft are the fuselage, wings, stabilizers, flight control surfaces, and landing gear. Figure 4-5 shows these units of a naval aircraft. NOTE: The…
CONSTRUCTION MATERIALS
LEARNING OBJECTIVE: Identify the various types of metallic and nonmetallic materials used in aircraft construction. An aircraft must be constructed of materials that are both light and strong. Early aircraft…
SPECIFIC ACTION OF STRESSES
You need to understand the stresses encountered on the main parts of an aircraft. A knowledge of the basic stresses on aircraft structures will help you understand why aircraft are…
Stresses in Aircraft Structural Members
An aircraft structure must be designed so that it accepts all of the stresses imposed upon it by the flight and ground loads without any permanent deformation. Any repair made…
Strain Energy
Strain energy under axial load Strain energy due to bending Strain energy due to transverse shear Strain energy due to torsion
The Three-Moment Equation
The three-moment equation gives us the relation between the moments between any three points in a beam and their relative vertical distances or deviations. This method is widely used in…
What is superposition?
What do ripples on puddles, waves on ropes and noise-cancelling headphones have in common? They all show superposition. When two waves meet they overlap and interact. Sometimes they add to make…
The Method of Sections
The method of sections is a process used to solve for the unknown forces acting on members of a truss. The method involves breaking the truss down into individual sections and analyzing each…
