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Hiding a spoiler at low speeds can improve aerodynamics as well. At low speeds, a fixed spoiler may increase drag and does little to improve the vehicle's handling due to having little airflow over it. A retractable front spoiler can reduce the scraping of the car on curbs or other road imperfections, while still reducing drag at high speeds.
Spoiler controls can be used for roll control (outboard or mid-span spoilers) or descent control (inboard spoilers). Some aircraft use spoilers in combination with or in lieu of ailerons for roll control, primarily to reduce adverse yaw when rudder input is limited by higher speeds. For such spoilers the term spoileron has been coined. In the ...
An early use of spoilers augmenting small ailerons, known as guide ailerons, was in the Northrop P-61 Black Widow night fighter. The spoilers allowed wider-span flaps for a lower landing speed. [3] The B-52 Stratofortress also had spoilers augmenting small ailerons, known as feeler ailerons. These ailerons provided control forces to the pilot.
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A Gurney flap shown on the underside of a Newman airfoil [1]. The Gurney flap (or wickerbill) is a small tab projecting from the trailing edge of a wing. Typically it is set at a right angle to the pressure-side surface of the airfoil [2] and projects 1% to 2% of the wing chord. [3]
IDAHO (9A: Boise's state) Boise is the capital of IDAHO and its most populous city. STAN (25A: "Circa 1948" artist Douglas) STAN Douglas is a Canadian artist known for his video, photography, and ...
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It is the sixth and final installment in the Universal Soldier film series. The film acts as a sequel to 2009's Universal Soldier: Regeneration, unrelated to the two television sequels and ignoring the events of the 1999 theatrical sequel Universal Soldier: The Return. In the film, former military man John awakens from a coma and finds out his ...