Power-matching methodology in tip-jet drive rotor design

A power-matching methodology was promoted to decouple the interior-flow and external-flow of a tip-jet drive rotor, and a reaction drive model based on the engine exhaust gas property and duct flow condition was established, which including: influence of area, temperature, friction and rotor rotation. The rotor tension and torque was analyzed by a modified blade element method. The result shows that section thickness and rotary speed are main influential factors to the tension and power balance, and the represented method is a rapid approach to choose the jet rotor parameters in overall design stage.