What is the main rotor diameter of the TH-73A?

• A. 35.53 feet
• B. 32.14 feet
• C. 40.36 feet
• D. 25.02 feet

Answer: (A)

The main rotor diameter of the TH-73A is indeed 35.53 feet. This measurement is critical for understanding the aircraft's performance characteristics, including its lift capabilities and handling qualities. The rotor diameter influences the amount of air that the rotor blades can displace, which directly affects the helicopter's ability to take off, hover, and maneuver.

In aviation, rotor diameter is an essential specification when designing rotorcraft, as it determines the size of the rotor system and, by extension, the helicopter's efficiency and performance in various flight conditions. The TH-73A's rotor diameter is designed to optimize lift while balancing the weight and overall dimensions of the aircraft, making the rotor size a key factor in its operational utility and effectiveness in training scenarios.