BladeTrackers inspection pattern is unique.
A BladeTracker survey starts with selecting a blade. Per rotation, an image pair is captured: 1A-1B, 2A,-2B, 3A-3B etc… .
After the first pair is captured (1A-1B), BladeTracker moves inwards to capture the next pair of images, slightly overlapping with the previous one. This process is repeated until the hub is reached. Full coverage is reached, but the images from the A-serie have an emphasis on the leading edge, the images from the B-serie have an emphasis on the trailing edge. An alternative sequence can be capture upon request.
When capturing the images, the horizontal and vertical angle of the camera is recorded to facilitate photogrammetry.
The principles of reporting can be found here.
Alternatively, customers can choose for a quick intermediate leading edge inspection instead.