Stall Flag Methode
A effective measuring instrument
The Stall Flag is a simple yet effective measuring instrument, able to determine the flow status of a moving surface though a fluid. The flags are aplied to a moving surface. While the surface moves through a fluid the flaps hinge from the one to the other position depending on the flow conditions. The position of such flaps can be determent because one side of the flags is distinctively different from afar.