Design Of Six Component Force And Moment Sensor For Wind Tunnel Test

This study describes the development of a new six component force and moment sensor using a rectangular box like structure, which can be used to measure aerodynamic forces Fx, Fy and Fz and moments Mx, My and Mz simultaneously in wind tunnel. An inbuilt cantilever beams are used as a sensing element and their design is based on the bending beam theory. A total of twelve strain gauges are attached on the two sides of the sensing elements (cantilever beams) to sense the strain created during the application of the load. After fabricating the sensor an experimental test is carried out and the result obtained is compared with the theoretical values. From the test it is observed that Fx is measured with 70.5%, Fy is measured with 60.9%, Fz is measured with 77.5%, Mx is measured with 63.7%, My is measured with 64.8% and Mz is measured with 66.1% accuracy. The results of each loads can be measured independently.

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