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Aerodynamics Linear Motion (Moving Air )
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Fundamentals of Physics
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Basic Quantities Space - Length Time Matter - Mass
Charge - Electro-magnetic
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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
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Laws of Physics Observations of the Relations
between Derived Quantities
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Fundamentals of Aerodynamics (Fluid Dynamics)
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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
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Temperature – Basic or Derived ?
Density -> mass and volume Pressure -> momentum (mass x velocity) 2 Temperature -> kinetic energy (mass x velocity )
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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
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Mass Flow Rate r r r
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Determine Pressure, Temperature
and Density The “Static” Atmosphere 1976 Standard Day Model
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Moving Through the Atmosphere (Dynamics)
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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
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Terminology for this Workshop
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