EASA 66 Module 2 - Physics

EASA 66 Module 2 explains the basics of Physics using easy to understand language and engaging graphics.The student will come away with a fundamental knowledge of matter, mechanics, optics and other topics that are necessary for understanding aircraft engines and systems.

2.1 Matter

  • Nature of matter: the chemical elements, structure of atoms, molecules;
  • Chemical compounds;
  • States: solid, liquid and gaseous;
  • Changes between states.
  • 2.2 Mechanics

    Statics

  • Forces, moments and couples, representation as vectors;
  • Centre of gravity;
  • Elements of theory of stress, strain and elasticity:tension, compression, shear and torsion;Nature and properties of solid, fluid and gas;Pressure and buoyancy in liquids (barometers).
  • Kinetics

  • Linear movement: uniform motion in a straight line,motion under constant acceleration (motion under gravity);
  • Rotational movement: uniform circular motion (centrifugal/centripetal forces);
  • Periodic motion: pendulous movement;
  • Simple theory of vibration, harmonics and resonance;Velocity ratio, mechanical advantage and efficiency.
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  • Dynamics

  • a) Mass, Force, inertia, work, power, energy (potential,kinetic and total energy), heat, efficiency;
  • b) Momentum, conservation of momentum; Impulse;Gyroscopic principles;
  • Friction: nature and effects, coefficient of friction (rolling resistance).
  • Fluid Dynamics
                a) Specific gravity and density;

    • b) Viscosity, fluid resistance, effects of streamlining;Effects of compressibility on fluids; Static, dynamic and total pressure: Bernoulli's Theorem, Venturi
  • 2.3 Thermodynamics

    First and second law of thermodynamics;Gases: ideal gases laws; specific heat at constant volume and constant volume and pressure,work done by expanding gas; Isothermal, adiabatic expansion and compression, engine cycles, constant volume and constant pressure, refrigerators and heat pumps;Latent heats of fusion and evaporation, thermal energy,heat of combustion.

    • a) Temperature: thermometers and temperature scales:Celsius, Fahrenheit and Kelvin;Heat definition.
    • Graphical representation; nature and uses of graphs,graphs of equations/functions
    • Simple trigonometry; trigonometrically relationships,use of tables and rectangular and polar co-ordinates
    • b) Heat capacity, specific heat;Heat transfer convection, radiation and conduction;Volumetric xpansion;
  • 2.4 Optics (Light)

    Laws of reflection and refraction: reflection at plane surfaces, reflection by spherical mirrors,refraction, lenses;Fiber optics.

    • Nature of light; speed of light;
  • 2.5 Wave Motion and Sound

    Wave Motion

    Mechanical waves, sinusoidal wave motion, interference phenomena, standing waves;

    Sound

    • Nature of light; speed of light;
    • Speed of sound, production of sound, intensity, pitch and quality, Doppler effect.

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