Aerodynamics Linear Motion (Moving Air )

Fundamentals of Physics

Basic Quantities Space - Length Time Matter - Mass Charge - Electro-magnetic

Derived Quantities Dimensionality Combinations of Basics Length Velocity = Mass Length Time Force = Time 2 Dimensionality Mass Length Momentum = Time Length 2 Mass Energy = Time 2 Mass Density = Length 3

Laws of Physics Observations of the Relations between Derived Quantities

Fundamentals of Aerodynamics (Fluid Dynamics)

Derived Quantities Dimensionality Used in Aerodynamics Mass Mass Length Force = Density = Length 3 Time 2 Length Length Mass Momentum = Velocity = Time Time Force Mass Pressure = = Area Length Time 2 Length 2 2 Mass Mass Length Torque = Energy = Time 2 Time 2 Mass Dimensionality Mass Flow = Time

Temperature – Basic or Derived ? Density -> mass and volume Pressure -> momentum (mass x velocity) 2 Temperature -> kinetic energy (mass x velocity )

Conservation Laws For any fluid system: Observations of the Relations between Derived Quantities For any fluid system: Mass is neither created nor destroyed. Conservation of Mass - Continuity Momentum is neither created nor destroyed. Conservation of Momentum (3 directions) Energy is neither created nor destroyed. Conservation of Energy mass mass x velocity mass 2 mass x velocity mass x velocity 2 mass x velocity

Mass Flow Rate r r r

Determine Pressure, Temperature and Density The “Static” Atmosphere 1976 Standard Day Model

Moving Through the Atmosphere (Dynamics)

Forces on an Aircraft Measured Forces Have The Same Value Aircraft Air Air Moves Past the Aircraft Aircraft Air Equivalent Aircraft Moves Through the Air Aircraft Air

Terminology for this Workshop