Match each of the following terms with an appropriate definition:

1. Aerofoil
2. Chord
3. Span
4. Camber

Recall the aerodynamic properties of a rotor blade in respect to:

1. Aerofoil shape
2. Blade twist
3. Blade taper

Recall the relationship between dynamics pressure, static pressure and total pressure in a streamlined flow of an ideal fluid and state how pressure alters in a venturi.

Match each of the following terms with an appropriate definition:

1. Rotor thrust
2. Rotor drag
3. Total reaction
4. Relative airflow
5. Rotational airflow
6. Induced airflow
7. Centrifugal reaction
8. Rotor disc
9. Coning angle

Label a diagram showing the vectors acting on a rotor blade in hovering flight.

Match each of the following items with an appropriate definition:

1. Ground effect
2. Tail rotor drift
3. Rotor shaft tilt effect
4. Re-circulation

Select from a list the statement which best describes:

1. Vortex ring state (settling with power)
2. Loss of tail rotor effectiveness (LTE)
3. The conditions leading thereto
4. The appropriate recovery action

Match each of the following terms with an appropriate statement:

1. Feathering
2. Flapping
3. Flapping to equality
4. Dragging
5. Advance angle
6. Phase lag

Match each of the following terms with an appropriate definition:

1. Dissymmetry of lift
2. Flapback
3. Cyclic limits
4. Airflow reversal
5. Retreating blade stall
6. Compressibility
7. Inflow roll
8. Translational lift

Label a diagram showing the vectors acting on various sections of a rotor blade in forward flight.

Match each of the following terms with an appropriate definition:

1. Rotor profile drag
2. Induced drag
3. Parasite drag

Recall the power available and power required curves and best speeds for range and endurance, best rate of climb and best angle of climb.

Select from a list the statement which best describes:

1. Over-pitching
2. The conditions leading to
3. The appropriate recovery action

Match each of the following terms with an appropriate definition:

1. Autorotative force
2. Autorotative section

Select from a list the statement which best describes the effect on autorotative flight of variations in:

1. All-Up-Weight (AUW)
2. Density altitude
3. Airspeed
4. Rotor RPM.

Label a diagram showing the vectors acting on a rotor blade section during forward autorotative flight.

Label a diagram showing the vectors acting on a rotor blade section during an autorotative flare.

Select from a list the statement which best describes:

1. Ground resonance
2. Mast bumping
3. Dynamic roll-over
4. The condition leading thereto
5. The appropriate recovery action