Loading Adjustment and Measurement Technology Research for Tail Rotor Hub Journal and Sleeves Assembly Fatigue Test of Unmanned Helicopter
Firstly,based on the special framework of tail rotor hub journal and sleeves modules of unmanned helicopters,the loading character and form were introduced.Then,the docking surface load of tail blades and surface measurement load of tail rotor hub journal and sleeves modules were calculated and analyzed,and the fatigue test loading design method and the principle of debugging were presented separately.Finally,by combining the numerical interpolation formula with measuring loads of tail blade fake parts,the docking surface load of tail blades were calculated,and the monitoring profile load of tail rotor hub journal and sleeves modules were also directly measured.After that the above results were compared and analyzed,thereby the reason-able debugging method for this test was confirmed,which can not only guarantee the test running smoothly and loading rea-sonably in the fatigue test,but also providevaluable reference for the development of tail rotor hub journal and sleeves module fatigue test technology about unmanned helicopters in future.
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