What is the purpose of the intermediate gearbox in a turbine engine?

The intermediate gearbox in a turbine engine plays a crucial role in the overall operation and efficiency of the engine. Its primary function is to drive the main accessory gearbox. This component is essential as it helps to transfer power from the high-speed turbine shaft, which operates at high RPM, to the accessory gear train that drives various engine accessories. These accessories typically include the fuel pump, oil pump, and electrical generators, among others. By routing the power effectively from the turbine, the intermediate gearbox allows these components to function correctly, ensuring that the engine operates smoothly and efficiently.

In the context of the other options, while reducing engine weight, controlling fuel flow, and regulating oil pressure are important aspects of turbine engine design and functionality, they do not directly relate to the specific function of the intermediate gearbox. The gearbox itself primarily focuses on the mechanical transmission of power, making option B the most accurate choice for describing its purpose.