Which feedback control issue arises when hydraulic valve poppet oscillations exceed expected limits in an aircraft flight control system at high frequencies?

💡 Explanation

Flutter occurs because exceeding the valve poppet oscillation limits causes unwanted periodic forces on the control surface due to parametric excitation mechanism. Therefore, flutter develops rather than thermal runaway in the actuator or fluid contamination from normal hydraulic operations.

• Which consequence results when a tail rotor's collective pitch control fails in a helicopter?
• Which risk increases due to improperly released tendons?
• Which outcome occurs when biodiesel fuel is contaminated with water in a fuel injection system?
• Which risk dramatically increases when distributed power grid operators disable a portion of a phased array radar causing excessive voltage?
• Which consequence results when excessive collet pressure distorts workpieces in CNC lathes?
• Which risk increases when a three-phase circuit breaker employing minimum oil encounters frequent fault interruptions?