This means that the blade must be forced outward during measurement to simulate the effect of centrifugal force. The contact surfaces must be rigid with respect to the axis of the moment weight scale. Any clamping mechanism which moves in the fixture must not introduce a moment change. The fixture must be easy to use and not require any special operator technique in order to obtain repeatable readings. The Space Electronics dovetail adapters are precision ground and lapped to tolerance.
All adapters are custom designed based on the exact dimensions of the turbine blade.
These drawings must include dimensions and tolerances. The nominal pan weight and the nominal moment weight of the blade. The distance from the center of rotation of the engine to the Z-plane of the blade. A sample blade. This allows us to assure proper fit, clamping pressure, and ease of use, and it also permits verification of the dimensions on the drawings.