Force measurement system of a low-speed wind tunnel

Wind tunnel is a basic experimental facility, in which a variety of aerodynamic research can be conducted by measuring force acted on the test model, pressure distribution on the model surface, as well as by visualizing the flow around the model. The force measurement test is conventional and especially important for the aircraft and other vehicle design to predict their performance. The force measurement system of D-4 wind tunnel in Beijing University of Aeronautics and Astronautics is introduced together with a force measurement test as an instance.