What type of rotor head does the TH-73A have?

• A. Semi-ridged
• B. Fully articulated
• C. Underslung
• D. Ridged

Answer: (B)

The TH-73A features a fully articulated rotor head, which is designed to allow for a greater range of motion and flexibility during flight. This type of rotor system consists of multiple blades that are mounted on the rotor hub and can move independently. The flexibility of the blades enables the rotor system to adapt to different aerodynamic forces, providing improved performance, stability, and efficiency.

Fully articulated rotor heads are particularly advantageous for helicopters in terms of handling and maneuverability, especially in turbulent conditions or during aggressive flight maneuvers. This design is essential for training helicopters like the TH-73A, which are used to develop a wide range of piloting skills in various flight scenarios.

In contrast, other options like semi-rigid and ridged rotor heads do not provide the same level of individual blade movement and range of motion, which can limit performance and responsiveness in flight. Meanwhile, underslung refers more to the configuration and mounting of the rotor system rather than the characteristics of the rotor head itself. Therefore, the fully articulated rotor head aligns perfectly with the operational requirements of the TH-73A training helicopter.