Question: A model for an airplanes pitch loop is shown in Figure P6.12. Find the range of gain, K, that will keep the system stable. Can

A model for an airplane’s pitch loop is shown in Figure P6.12. Find the range of gain, K, that will keep the system stable. Can the system ever be unstable for positive values of K?

Controller Aircraft dynamics Commanded pitch angle K(s + 1) s+ 10 Pitch

Controller Aircraft dynamics Commanded pitch angle K(s + 1) s+ 10 Pitch angle (s+ 4.85) 2 +0.6s + 9 Gyro FIGURE P6.12 Aircraft pitch loop model

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