초록 ▼

A convergent intake duct has a radial outflow opening through which air accelerated in the duct impinges on airfoil shaped vanes to induce rotation of the rotor on which the vanes are mounted. The duct is formed internally of a tubular airfoil body so that the low pressure region formed on the trail

A convergent intake duct has a radial outflow opening through which air accelerated in the duct impinges on airfoil shaped vanes to induce rotation of the rotor on which the vanes are mounted. The duct is formed internally of a tubular airfoil body so that the low pressure region formed on the trailing edge portion of the external airfoil surface increases the pressure differential across the vanes in the radial direction of outflow of the air from the duct.

대표청구항 ▼

In a wind turbine assembly from which power is taken having a rotor adapted to be mounted for rotation about an axis substantially parallel to the direction of airflow, a plurality of vanes carried on said rotor in radially spaced relation to said axis, flow controlling duct means mounted in operati

In a wind turbine assembly from which power is taken having a rotor adapted to be mounted for rotation about an axis substantially parallel to the direction of airflow, a plurality of vanes carried on said rotor in radially spaced relation to said axis, flow controlling duct means mounted in operative relation to the rotor for conducting a radial outflow of air against said vanes to induce rotation of the rotor, and airfoil surface means mounted externally on the duct means for producing a low pressure region within which said vanes are positioned by the rotor to enhance rotation thereof in response to inflow of the air through the duct means.