How is the TH-73A powered?

• A. By a dual-engine turboprop system
• B. By a single Turbomeca Arrius 2R turboshaft engine
• C. By electric battery power
• D. Using a hybrid power system

Answer: (B)

The TH-73A is powered by a single Turbomeca Arrius 2R turboshaft engine, which is designed for reliability and efficiency in rotorcraft operations. This type of engine is specifically optimized for helicopter performance, providing the necessary power-to-weight ratio needed for flight maneuvers and training exercises. The Arrius 2R engine contributes to the aircraft's capabilities, including its speed and agility, while also ensuring a smooth operation and low maintenance requirements.

In the context of the other options, a dual-engine turboprop system would not be appropriate as the TH-73A is a single-engine helicopter, not designed for dual propulsion. Electric battery power is not a primary means of propulsion for rotorcraft of this type, as they typically rely on turbine engines for the sustained power needed during flight. Lastly, while hybrid systems are an emerging technology in aviation, the TH-73A exclusively utilizes the Turbomeca Arrius 2R turboshaft engine, sticking to traditional propulsion methods for reliability and operational efficiency.