Which observation most clearly indicates a hydraulic issue during a catapult stroke anomaly?

Which observation most clearly indicates a hydraulic issue during a catapult stroke anomaly?

• A. Physical resistance to motion
• B. Irregular velocity or pressure changes
• C. Normal, smooth acceleration
• D. Sudden complete stall

Answer: (B)

During a catapult stroke, hydraulic control should deliver a smooth, coordinated flow and a predictable pressure profile to accelerate the aircraft. If there’s a hydraulic problem, you’ll typically see irregular velocity and pressure changes as the system fights to deliver or restrict flow. Those fluctuations—speeding up, slowing down, pressure spikes or drops—directly reflect issues like a sticking valve, pump instability, or a leak that disrupts consistent fluid control. The other possibilities point to different situations: physical resistance to motion usually means mechanical friction or binding rather than a hydraulic control issue; normal, smooth acceleration indicates healthy hydraulics; a sudden complete stall suggests a severe fault, which isn’t the subtle sign you’d expect from a hydraulic anomaly.

During a catapult stroke, hydraulic control should deliver a smooth, coordinated flow and a predictable pressure profile to accelerate the aircraft. If there’s a hydraulic problem, you’ll typically see irregular velocity and pressure changes as the system fights to deliver or restrict flow. Those fluctuations—speeding up, slowing down, pressure spikes or drops—directly reflect issues like a sticking valve, pump instability, or a leak that disrupts consistent fluid control.

The other possibilities point to different situations: physical resistance to motion usually means mechanical friction or binding rather than a hydraulic control issue; normal, smooth acceleration indicates healthy hydraulics; a sudden complete stall suggests a severe fault, which isn’t the subtle sign you’d expect from a hydraulic anomaly.