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Research Article Open Access
The present work is an attempt towards achieving an alternative design algorithm for a two-loop autopilot which would involve simpler and less complicated relations, requiring lesser computational efforts and to some extent be flexible in achieving different deflection, deflection rate and body rate demands in specific flight conditions. The design approach in  is based on a two-loop lateral autopilot configuration in pitch plane developed as an equivalent flight path rate demand autopilot system. The key idea of this design approach is to achieve a preliminary set of control gains (Kp, Kq) on the basis of a simplified lateral autopilot in yaw plane using an ideal actuator system. This developed approach has been verified by evaluating the performance of the designed autopilots at a typical operating point. In this approach simulation of body rate, fin deflection and fin deflection rate has been observed. An attempt has been made to determine the effect of the different values of control gains on such body rate, fin deflection and fin deflection rate. In this approach sensitivity of the control gains have been studied. It has been studied how the change in control gains affect the frequency domain performance.
Autopilot, Control Gain, Critical Gain Margin, Critical Phase Margin, Aerospace Engineering,Applied Electronics,Applied Sciences,Biochemistry,Biogenetic Engineering,Bio medical Engineering,Botany.