Private Pilot Private Exam

What effect do spoilers have on an aircraft during flight?

1. They increase lift

2. They assist during takeoff

3. They decrease lift and increase drag

4. They stabilize the aircraft

The correct answer is: They decrease lift and increase drag

Spoilers on an aircraft serve a crucial role during flight by decreasing lift and increasing drag. They are movable surfaces located on the wings, and when deployed, they disrupt the smooth airflow over the wing. This disruption reduces the lift generated by the wing by altering its aerodynamic properties. By decreasing lift, spoilers can help the pilot lower the aircraft's altitude more quickly, which is particularly useful during descents and landings. Additionally, the increased drag created by the open spoilers contributes to the slowing down of the aircraft, allowing for more controlled descent rates and landing approaches. This aerodynamic change is essential for managing the aircraft's flight dynamics, particularly in scenarios where rapid descent or controlled reduction of speed is necessary.