This simple yet comprehensive experiment module consists of a duct with transparent front and rear. The front has scales printed on it to position the various parts during the experiments. A Pitot tube and simple mass balance are attached to the outside of the duct for wake traverse and direct drag measurements respectively.
It comes with three models all of the same frontal area:
- A cylinder with a protractor, and a pressure tapping in its outer wall
- A flat plate
- A symmetrical aerofoil shape with a NACA profile
All the models fit in the arms of the mass balance for the wake traverse and direct measurement experiments. For cylinder pressure distribution experiments, the arms of the mass balance can be rotated clear of the duct and the cylinder model fitted between the duct walls directly. Both the Pitot tube and the cylinder tapping connect to the AF10a Manometer (ancillary) via flexible tubes fitted with quick-release couplings.