What does the Integrated Drive Generator (IDG) consist of?

The Integrated Drive Generator (IDG) is an essential component of the aircraft's electrical generation system, specifically designed to convert mechanical energy from the engine into electrical energy while maintaining a constant output frequency regardless of the engine speed.

The IDG consists of two main parts: a constant speed drive and a generator. The constant speed drive enables the generator to operate at a stable speed, ensuring that the electrical output is consistent and reliable under varying engine conditions. This is critical for the aircraft's electrical systems, which require a constant frequency for proper operation. The generator then produces the electrical power needed for various systems onboard, including lighting, avionics, and other essential functions.

This configuration allows for greater efficiency and reliability, making the IDG a vital component of modern aircraft systems. The other options listed, while mentioning components that are important in various contexts, do not accurately describe the specific makeup of the Integrated Drive Generator.