 This KLM cityhopper Fokker 70 still has its spoilers deployed (the cream-coloured panels projecting above the top surface of the wing) after landing at Bristol International Airport, England.
 A closer look at the spoiler (the parts of the wing that are raised up). Taken upon touchdown. Airplane: Airbus A321-200, 6Y-JMH Air Jamaica In aeronautics a spoiler (sometimes called a lift dumper) is a device intended to reduce lift in an aircraft. Spoilers are plates on the top surface of a wing which can be extended upward into the smooth airflow and spoiling it. By doing so, the spoiler creates a carefully controlled stall over the portion of the wing behind it, dramatically reducing lift. Spoilers differ from airbrakes in that airbrakes are designed to increase drag while making little change to lift, while spoilers greatly reduce lift while making only a moderate increase in drag. Image File history File linksMetadata Download high resolution version (1911x1317, 552 KB) Summary KLM Cityhopper Fokker 70 at Bristol International Airport, Bristol, England. ...
Image File history File linksMetadata Download high resolution version (1911x1317, 552 KB) Summary KLM Cityhopper Fokker 70 at Bristol International Airport, Bristol, England. ...
Image File history File linksMetadata Download high resolution version (1600x1200, 625 KB) Summary Picture taken aboard 6Y-JMH (Air Jamaica) December 2004. ...
Image File history File linksMetadata Download high resolution version (1600x1200, 625 KB) Summary Picture taken aboard 6Y-JMH (Air Jamaica) December 2004. ...
Six F-16 Fighting Falcons with the U.S. Air Force Thunderbirds aerial demonstration team fly in delta formation in front of the Empire State Building. ...
The lift force, lifting force or simply lift is a mechanical force generated by a solid object moving through a fluid. ...
Laminar flow (bottom) and turbulent flow (top) over a submarine hull. ...
In aerodynamics, a stall is a condition in which an excessive angle of attack causes loss of lift due to disruption of airflow. ...
In aeronautics air brakes are a type of flight control used on aircraft to reduce speed during landing. ...
Spoilers are used by gliders in particular to control their rate of descent, and thus achieve a controlled landing at a desired spot. Spoilers are necessary because while an increased rate of descent can be achieved by angling the nose of an aircraft downwards, this may result in a significant increase in speed, possibly exceeding safe limits. Additionally, angling the nose downward may not result in a sufficient increase in descent angle. Gliders or Sailplanes are heavier-than-air aircraft primarily intended for unpowered flight. ...
Airliners too are usually fitted with spoilers. Spoilers are sometimes used when descending from cruise altitudes, to assist the aircraft in descending to lower altitudes without picking up speed. Their use is often limited, however, as the stall and turbulent airflow which develops behind them causes noticeable noise and vibration, which may cause discomfort to passengers. On landing, however, the spoilers are nearly always used at full effect to assist in slowing the aircraft. The increase in form drag created by the spoilers directly assists the braking effect. However, the real gain comes as the spoilers cause a dramatic loss of lift and hence the weight of the aircraft is transferred from the wings to the undercarriage, allowing the wheels to be mechanically braked with much less chance of skidding. Reverse thrust is also often used to help slow the aircraft on landing. An Airbus A340 airliner operated by Air Jamaica An airliner is a large fixed-wing aircraft with the primary function of transporting paying passengers. ...
MyTravel Airways Airbus A320 landing Landing is the last part of a flight, where a flying animal or aircraft returns to the ground. ...
In aerodynamics, form drag, profile drag, or pressure drag, is a component of parasitic drag. ...
KLM Fokker 70 with reverse thrust applied. ...
In air-cooled piston engine aircraft, spoilers may be needed to avoid shock cooling the engines. In a descent without spoilers, air speed is increased and the engine will be at low power, producing less heat than normal. The engine may cool too rapidly, resulting in stuck valves, cracked cylinders or other problems. Spoilers alleviate the situation by allowing the aircraft to descend at a desired rate, while letting the engine run at a power setting that keeps it from excessively rapid cooling. (This is particularly true in turbo charged air cooled piston engines, which run at higher power than normally aspirated engines.) Shock cooling refers to the theory that does damage to engines, particularly air-cooled aviation piston engines may occur because of an excessively rapid decrease in temperature. ...
Spoilers as control surfaces
Some aircraft use spoilers in combination with or in lieu of ailerons for roll control. For such spoilers the term spoileron has been coined. In the case of a spoileron, in order for it to be used as a control surface, it is raised on one wing, thus decreasing lift and speed causing both roll and yaw effects. For the band with a similar name, see The Ailerons Ailerons are hinged control surfaces attached to the trailing edge of the wing of a fixed-wing aircraft. ...
In aeronautics spoilerons are spoilers that can be used asymmetrically to achieve the effect of ailerons, i. ...
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