CPL - aerodynamics

Whenever a force SUCEEDS in producing motion, WORK is done.

Work = Force x Distance (fixed and inversely proportional)

Depends upon energy available, in the case of an aircraft this is the total fuel on board

Minimum drag

Maximum range

’Power’ is the RATE at which WORK is done.

You can measure this with the rage fuel is burnt by the engine to make thrust.

Min power = min fuel flow = maximum Endurance

MAX Endurance = MIN power

The POTENTIAL to move, does not actually have to be in motion to possess kinetic energy

IAS adjusted for pitot position and instrument errors

CAS ( IAS adjusted for position / instrument error) adjusted for Density error

As height increases this gap will increase at roughly 2kts per 1000’

Tendency of an airflow to follow a surface with a gentle curvature rather than continue on straight

Pressure inside the walls of a tube decreases when velocity increases, and pressure increases as velocity decreases.

Air passing through a narrower section of pipe will increase in velocity and decrease in pressure and vice versa.

They are inversely proportional as one increases/decreases the other must do the opposite as total energy remains constant.

As long as the aerofoil is thickening, it then becomes turbulent past the transition layer and produces extra drag

Where the maximum thickness is well back along the chord and therefor produces less drag

The stalling angle of attack

It’s the drag caused by air having to get out of the way of an aerofoil and the friction that is created as it does this for example.

The maximum speed of the aeroplane