control reversal


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control reversal

i. The situation in which the effect of control deflections is opposite what is desired or normal. It may be caused by a mechanical malfunction or aeroelastic distortion of the airframe—more often the latter. The most common phenomenon is aileron reversal. See aileron reversal.
ii. Aileron reversal also occurs in some aircraft at very low speeds. The descending aileron increases the angle of attack of that portion of the wing, causing stall of the wing that should be moving upward, causing it to drop.
References in periodicals archive ?
An "Actual Direction" option prevents control reversal confusion during manual flight - when activated, the quad always moves in the same direction as the control sticks.
After completing Phase 1, they were transferred to either a whole reversal in which bot h tasks were reversed, or a partial reversal in which only one of the two tasks was reversed but the other was not reversed, or a control reversal in which only one of two tasks was reversed but the other was replaced for a new discrimination task.
Group Control was run under the control reversal condition in which only one of the two tasks (vertical-horizontal stripes task) was rev ersed and a new discrimination task (triangle-circle task) was added instead of the other (white-black task).
The expectation according to Nakagawa's view (1978, 1986, 1992, 1998, 1999a, 1999b, 1999c, 1999d) is that animals of the partial reversal condition master reversal faster than animals of the control reversal condition, which in turn master reversal faster than animals of the whole reversal condition.
Group Control was run under a control reversal condition in which only one of the two tasks was reversed and a new discrimination task (i.
The accident, which delayed the program, occurred in flight during an extreme control reversal in the longitudinal axis while in autorotation at maximum speed and minimum rotor RPM.