Transcription of Aircraft Stability and Control Augmentation
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Aircraft Stability and Control Augmentation
Aircraft Stability and Control Augmentation Prepared by Assistant Professor Department of Aerospace Engineering Madras Institute Of Technology Chromepet, Chennai Inner-Loop Stability and Control The dynamic Stability characteristics of Aircraft have been improved during the past 50 years using a variety of inner- loop feedback Control systems. Inner loop simply refers to the fact that these systems are represented as the inner loop in a block diagram representation when married with outer-loop autopilot modes such as attitude hold. Inner-loop feedback Control systems has been grouped into three broad categories. Stability Augmentation systems, Control Augmentation systems and fly-by-wire systems. Stability Augmentation systems (SAS). Stability Augmentation systems (SAS) were the first feedback Control system designs intended to improve dynamic Stability characteristics of an Aircraft . It is also referred as dampers, stabilizers, and Stability augmenters.
• Aircraft such as the A-7, F-111, F-14, and F-15 have CAS. A-7 D/E Corsair II F-111 Aardvark Medium Tactical/ Strategic Bomber Grumman F-14 McDonnell Douglas F-15. Simplified CAS • Additional reliability was designed into CAS so that the control authority could be increased (to approximately 50%). With a CAS, the aircraft
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