It was first performed in 1905 by Daniel Maloney. The barrel roll was originally called a "side somersault". The term "barrel roll" is frequently used, incorrectly, to refer to any roll by an airplane (see aileron roll, slow roll or snap roll). Upon completing the roll, the airplane should end up flying along the same flightpath, and at roughly the same altitude at which the maneuver began. Flying inverted, the plane continues through the roll, descending in altitude and returning to the original flightpath. The aircraft will have also gained altitude and travelled a short distance from the original flightpath. At the midpoint (top) of the roll, the aircraft should be flying inverted, with the nose pointing at roughly a right angle to the general flightpath. Sometimes rudder input is applied to help assist the roll through the yaw axis (nose rotates sideways), by swinging the tail over the top. It consists of a rotation along the pitch axis (nose rotates upward, in a direction perpendicular to the wings) through the application of elevator input, followed by aileron input to rotate the aircraft along its roll axis. The maneuver includes a constant variation of aircraft attitude (nose orientation) in two or perhaps all three axes. It is performed by doing a combination of a roll and a loop. In aviation, the barrel roll is an aerobatic maneuver in which an aircraft performs a helical roll around its relative forward motion, with the nose ending up pointed along the original flightpath. Aviation Barrel rolls being performed by the Indian Air Force Surya Kiran during an air show Although the maneuver predates the name, the term was first used in 1917, gaining popularity during the early 1930s. A more common modern visualization is to imagine an airplane trying to fly in a horizontal corkscrew around the line of the direction of travel. The barrel roll is so named because an aircraft executing this maneuver looks as though it were flying with its wheels running around the inside wall of a cylinder, or an imaginary barrel lying on its side. The barrel roll is commonly confused with an aileron roll. The g-force is kept positive (but not constant) on the object throughout the maneuver, commonly between 2 and 3 g, and no less than 0.5 g. It is sometimes described as a "combination of a loop and a roll". JSTOR ( October 2008) ( Learn how and when to remove this template message)Ī diagram of a barrel roll A barrel roll from the perspective of the wingtipĪ barrel roll is an aerial maneuver in which an airplane makes a complete rotation on both its longitudinal and lateral axes, causing it to follow a helical path, approximately maintaining its original direction. Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
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