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The whale tail car spoilers of the Porsche 911 caught on as a fashion statement, [32] and the term has been used to refer to large rear spoilers on a number of automobiles, including Ford Sierra RS, [33] Chevrolet Camaro, [34] and Saab 900. [35] Whale tail spoilers also appear at the rear of tricycles, [36] trucks, [37] boats, [38] and other ...
In aeronautics, a spoiler (sometimes called a lift spoiler or lift dumper) is a device which increases the drag and decreases the lift of an airfoil in a controlled way. Most often, spoilers are hinged plates on the top surface of a wing that can be extended upward into the airflow to spoil the streamline flow.
Spoilerons roll an aircraft by reducing the lift of the downward-going wing.Unlike ailerons, spoilers do not increase the lift and drag of the upward-going wing. A raised spoileron increases the drag on the down-going wing where it is deployed, causing the aircraft to yaw in the direction of the turn.
The ailerons are the primary control of bank, especially on smaller aircraft: larger aircraft often use roll spoilers or spoilerons on the upper wing surface to reduce lift on one wing to aid rolling. The rudder also has a secondary effect on bank through moving one wing forward and the other backwards, affecting the lift they produce.
The rear portion of the lower surface of the airfoil hinges downwards from the leading edge of the flap, while the upper surface stays immobile. [10] This can cause large changes in longitudinal trim, pitching the nose either down or up. At full deflection, a split flaps acts much like a spoiler, adding significantly to drag coefficient.
Top: Lateral view; the red circles mark the front air dam/splitter and rear diffuser. Bottom: Rear. A diffuser, in an automotive context, is a shaped section of the car rear which improves the car's aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere.