The main transmission is lubricated by which type of system?

• A. Redundant dry sump
• B. Single wet sump
• C. Independent redundant wet sump
• D. Open loop lubrication

Answer: (C)

The main transmission is lubricated by an independent redundant wet sump system, which utilizes a combination of features to ensure effective lubrication and reliability. In a wet sump system, oil is stored in the sump portion of the transmission itself, allowing for effective cooling and lubrication of the gears and bearings as the oil circulates through the system.

The term "independent" indicates that this lubrication system operates separately from other systems, which enhances reliability by preventing contamination and ensuring that the transmission receives consistent lubrication under various operating conditions. Additionally, the "redundant" aspect implies that there are backup systems or processes in place, which can be crucial in maintaining operation in the event of a failure or malfunction in one part of the system.

This combination of independence and redundancy contributes to increased safety and efficiency in high-demand environments, making it particularly suitable for applications where consistent performance and reliability are paramount, such as in aviation or heavy machinery.