Abstract
Theory and design principle for a new flowmeter is submitted.
Suppose a pair of wings is supported in point Symmetry on the central axis of a transparent circular cylinder, and the wing pair is connected to casing with a helical spring. A couple of lift is generated when flow of fluid is introduced to the cylinder. The couple of lift rotates the wing pair until it is balanced by reaction moment of the helical spring. This deflection angle of the wing pair indicates the flow rate through the cylinder.
This paper describes theory, design and experiment on the above explained flowmeter. The experimental result coinsides well with the theoretical estimation.
