Aero engine compressor and turbine blade inspection

Dimensional measurement solutions for the quality assurance of aero engine compressor and turbine blades


Compressor and turbine blades are essential components of the cold and hot sections in a turbofan, crucial to generating the power that propels the aircraft. Operating for long durations at high speeds and temperatures, the blades have to be produced and inspected to the highest quality.

Blade profiles, thickness, and alignment have very tight tolerances to ensure aerodynamic efficiency and optimal energy conversion while avoiding blade failure. High-accuracy measurement is required for a complete check of the blade’s complex geometries, such as the curvature of the aerofoil’s leading and trailing edge, and intricate firtree blade roots. Alongside the challenge of measuring freeform surfaces, the requirement to inspect large volumes of aero engine blades can cause production bottlenecks. 

The ideal measurement solution combines high precision with increased throughput. Hexagon enables aero engine manufacturers to bring blade metrology closer to production, reducing inspection times with inline 3D coordinate measuring machines (CMMs) equipped with an automated part loading system. An additional rotary table increases access to blade features to reduce the need for reclamping. 

Combining high-accuracy scanning probes with optical measurement helps manufactures achieve the minimised uncertainty and shorter cycle time required for increased blade manufacturing productivity. Hexagon’s blade-specialised CMM accommodates for surface types ranging from rough forged to micro-finish, while blade software enables user-friendly programming and automated measurement of crucial blade characteristics, including twist angle, chord length, and leading radius.

Our solutions

Explore Hexagon solutions for aero engine compressor and turbine blade inspection

Compact shop-floor CMMs

Combine a TIGO SF CMM with a high-precision X1C scanning probe for the inspection of smaller blades on the shop floor.

High throughput blade inspection

The non-contact and parameterised measurement capabilities of GLOBAL S HTA offers blade manufacturers high accuracy and throughput.

Blade measurement software

PC-DMIS Blade delivers user-friendly scanning initiation and inspection reports on key blade characteristics, including chord line, mean camber line...

Case studies

See how Hexagon solutions are used in compressor and turbine blade inspection

Enhanced blade inspection

Discover how an aero engine turbine blade manufacturer revolutionised its quality control by introducing continuous scanning and detailed test...

High throughput measurement

Learn how Hexagon’s high throughput and accuracy blade measurement solution was designed for the unique challenges of inspecting blades.