What type of fluid does the rotor brake system utilize in its operation?

• A. Hydraulic fluid
• B. Fuel
• C. Cooling fluid
• D. Engine oil

Answer: (A)

The rotor brake system primarily utilizes hydraulic fluid for its operation. Hydraulic fluids are specifically designed to transmit power through the hydraulic system, enabling the braking mechanism to function effectively. This type of fluid is pressurized and allows for smooth application and release of brake force, which is critical for the rotor brake's ability to slow down or stop the rotor blades quickly and safely.

Hydraulic systems benefit from the incompressibility of the hydraulic fluid, which allows for precise control and responsiveness, making it an ideal choice for brake applications. Other fluids, such as fuel or cooling fluids, do not possess the same properties needed for effective braking and are not suitable for this type of system. Engine oil, while it may have some lubrication qualities, is not used in rotor brake systems due to the different requirements of brake function and the risk of contamination or failure in the braking mechanism.