Linear Motion

Aerodynamics

(Moving Air )

Fundamentals of Physics

Basic Quantities

Charge - Electro-magneticMatter - Mass

TimeSpace - Length

Combinations of Basics

Velocity =

Density =

Force =LengthTime

MassLength

2Mass Length

Time

3

Momentum =Time

Mass Length

Derived Quantities

Dimensionality

Energy = TimeMass Length 2

2

Laws of Physics Observations of the Relations between Derived Quantities

Fundamentals of Aerodynamics (Fluid Dynamics)

Used in Aerodynamics

Velocity =

Density = Force =

LengthTime

MassLength 2

Mass Length

Time

3

Momentum =Time

Mass Length

Derived Quantities

Dimensionality

Energy = TimeMass Length 2

2

Pressure =2

MassLength

ForceArea =

Time

Mass Flow = MassTime

Torque = 2Mass Length

Time

2

Temperature – Basic or Derived ?

Density -> mass and volume Pressure -> momentum (mass x velocity)

Temperature -> kinetic energy (mass x velocity )

2

Conservation Laws Observations of the Relations between Derived Quantities

For any fluid system: 1) Mass is neither created nor destroyed. Conservation of Mass - Continuity 2) Momentum is neither created nor destroyed. Conservation of Momentum (3 directions) 3) Energy is neither created nor destroyed. Conservation of Energy

mass mass mass x velocity

mass x velocity

mass x velocity

mass x velocity 2

2

Mass Flow Rate

The “Static” Atmosphere 1976 Standard Day Model

Determine Pressure, Temperature and Density

Moving Through the Atmosphere (Dynamics)

Forces on an Aircraft

Air

Air

Aircraft

AircraftAir Moves Past the Aircraft

Aircraft Moves Through the Air

Measured Forces Have The Same Value

Equivalent

Terminology for this Workshop