Airfoil Characteristics

Angle of attack is

• Angle formed by camber line to the relative air flow

• Angle formed by leading edge to the relative air flow

• Angle formed by chord line to the relative air flow

• Angle formed by camber to the leading edge

The length between leading edge and trailing edge is called

• Chord length

• Chord line

• Camber

• Maximum camber

The line joining leading edge and trailing edge is called

• Chord length

• Camber line

• Maximum camber

• Chord line

The ratio between the maximum thickness of an airfoil to its chord length is called

• Lift coefficient

• Aspect ratio

• Fineness ratio

• Drag coefficient

The distance between the tip to other tip of a wing is called

• Wing root

• Wing span

• Wing area

• None of the above

The ratio between the wing span and its chord length is called

• Lift coefficient

• Drag coefficient

• Aspect ratio

• Fineness ratio

The maximum distance between the upper and lower surface of an airfoil is

• Chord

• Maximum Camber

• Camber

• Maximum thickness

The rear edge of an airfoil is called

• Leading edge

• Camber

• Trailing edge

• None of the above

Angle of incidence is

• The angle formed by the leading edge and the relative airflow

• The angle between the chord line and any of the reference axis along the airplane

• The angle formed by the chord line and the relative airflow

• None of the above

When the aircraft loses weight ,when the angle of attack exceeds specific value,what happens?

• Slip

• Stall

• Lift

• None of the above