Aerofoils

Question 1

Advantages and disadvantages of High lift areofoils

Answer 1

High lift areofoils have larger surface area, finesse ratio, chord lines. (can lift more weight). However with more lift comes more pressure drag (induced drag) which reduces A/C speed and maneuverability

Question 2

Advantages and disadvantages of general purpose aerofoil

Answer 2

Advantages - good light and speed properties

Found on many airliners

Question 3

Advantages and disadvantages of high speed aerofoil

Answer 3

Advantages - high manourvability, little drag

Disadvantages- requires high speed, normally more unstable

Question 4

Advantages and disadvantages of Symmetrical aerfoils

Answer 4

Adv. Highly manourvable, lift equally created whether A/C is upside down or not.

Dis. Needs a high AoA to produce lift for normal flight