What are the two types of borescopes used in inspection?

The distinction between flexible and rigid borescopes is fundamental to various inspection applications, especially in the field of gas turbine engines. Flexible borescopes consist of a thin, flexible tube that allows for maneuverability through complex pathways and access to difficult-to-reach areas. This flexibility makes them particularly useful for inspecting curved or intricate components where a straight line of sight is not achievable.

On the other hand, rigid borescopes are composed of a solid tube with a fixed length, offering a stable, clear image with minimal light loss. They are ideal for inspecting straight passages and surfaces where precision is paramount, like in the case of engine components that require detailed examination.

Together, these two types cater to different inspection needs, making them essential tools for maintenance and quality assurance in gas turbine engine construction and operation. This versatility is crucial in ensuring operational integrity, safety, and performance of gas turbine engines by allowing inspectors to thoroughly evaluate various components without disassembly.