曝光臺 注意防騙 網曝天貓店富美金盛家居專營店坑蒙拐騙欺詐消費者

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lfig. 8.60  Wing rock suppression of X-29 model. using stability augmentation
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PERFORMANCE, STABILITY, DYNAMICS, AND CONTROL
8.12   Roll Reversal and Yaw Departure
8.12.1 RoIIReversal
    Generally, the ailerons are used for producing rolling motion. Howe'ver, at high
angles of attack, much of the aileron effectiveness may be lost. In addition, the
aileron defiection at high angles of attack may produce significant adverse yaw,
which may lead to the so-called roll reversal phenomenon, in which the aircraft
 rolls in the opposite direction to aileron input. The angle of attack at which the roll
reversal occurs can be approximately determined using the following criterion,
 called lateral control departure parameter or LCDP.43 The LCDP is derived from
 simplified equations for yawing and rolling motions and is defined as follows.
      A17erons a/one for ro//.    The LCDP is given by
                                     LCDP = Cnp - C/-,. Cip                            (8.4)
　
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