Which risk increases when a UAV's tail rotor loses effectiveness during landing?

💡 Explanation

Uncontrolled yaw commences because loss of tail rotor effectiveness eliminates torque compensation. This results in aircraft rotation due to main rotor torque, therefore a yaw rotation occurs rather than stable descent or horizontal sliding, when the rotor still offers resistance.

• Which risk increases when a turbocharged engine operates at high altitude with fixed wastegate settings?
• Which risk dramatically increases when attempting to synchronize an out-of-phase three-phase power grid involving closing a circuit breaker?
• Which outcome occurs when the diaphragm accumulator ruptures in remotely operated underwater vehicle's (ROV) hydraulic system?
• Which consequence results when hydraulic servo valve deadband exists in an automatic milling machine?
• Which consequence results when excessive lateral force impacts a pretensioned concrete bridge?
• In a hydraulic turbine, which outcome escalates when the inlet pressure drops significantly during peak demand?