Cal Poly
Cut-away view of wind tunnel model with significant components
Both low and high pressure air regulation systems are located inside the model and are remotely actuated. The high pressure air is fed through the balance into the model, and the low pressure around the balance. Both pressure supplies employ bellows in the transition from non-metric to metric to negate any forces produced by the pressurized lines that would have a negative effect on data. To attach the model to the sting arm of the wind tunnel, a blade
attachment is used to decrease the flow interference caused by the sting. This blade also provides room to run pressure and electrical lines into the model up the aft end of the blade that is covered with a fairing. Patersonlabs, Inc. was responsible for the design of all the internal plumbing, instrumentation, pressure regulation systems, and structural layout of the model. The model is instrumented by a six-inch flow-through balance