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### 12 Cards in this Set

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 Should the flaps be raised straight after take off? No, the flaps should be raised in stages. What happens to the lift/drag ratio when flaps are lowered? The lift/drag ratio is always reduced. What effect do trailing edge flaps have on the centre of pressure? Move the C.O.P rearwards. This creates a nose down pitching moment. What effect do leading edge flaps have on the centre of pressure? Move the C.O.P forwards. This creates a nose pitching up moment. When trailing edge flaps are lowered what happens to the stalling angle of attack? The stalling A.O.A decreases. When leading edge flaps are lowered what happens to the stalling angle of attack? The stalling A.O.A increases. What is the mail function of a slat? To prolong the lift curve by delaying the stall until a higher A.O.A. What is a slot? The gap formed between the mail aerofoil and the leading edge slat. What does a spoiler do? Disrupts the airflow which therefore disrupts lift. What is the Lift:Drag Ratio? The ratio of CL to the CD of an aerofoil at various A.O.A. An Idea aerofoil requies: 1. High maximum CL 2. Low minimum CD 3. High Maximum CL:Minimum CD Ratio 4. Sufficient Depth 5. Small + Stable Movement of the C.O.P Always fly at the Angle of Attack that gives the: Best Lift to Drag Ratio