Which actuator failure mode results when the hydraulic fluid bulk modulus significantly decreases?

💡 Explanation

Diminished hydraulic fluid bulk modulus causes increased compressibility via fluid aeration leading to slower control response via decreased damping ability with the fluid around the position sensor. Therefore, servo-valve response diminishes due to decreased actuator stiffness, rather than thermal runaway or mechanical causes, because of how the aeration affects the hydraulic system.

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