Methodology for Efficiency Determination of Tip-Jet Helicopter Propulsion System

摘要

The paper presents the methodology for determination of efficiency of tip-jet helicopter propulsion systemwith use of the equivalent construction. The testing installation involves a structure with pipes that gives equivalentvalues of thrust force like real blades found in helicopter propulsion system. Paper further describes constructionproblems that lead to high losses and ideas for solutions.Experimental tests show how energy can be transformed to increase thrust force with reduction of nozzle area in orderto maximise lift power useful for helicopter flying and control.