Abstract: Typically,thenearspaceairshipparksinthehangarbeforelaunch.Assoonasnearspaceairshipleavesitshangaritwillbeaffectedbytheweatherandparticularlybythewind,whichnotonlyaffecttherapidityandsecurityoftheairshipoperation,butalsorelatetothesuccessoftheflighttest.Amechanicalmodelwasestablishedwhenanairshipwasoutsideitshangarwithbothsidesrestricted.Thevariationsofairshipyawandropetensionwereanalyzedbyusingdynamicmethod.Theanalyticalsolutionwasobtainedatthebeginningandstablestateofthewind,then,thestabilityandsafetyofanairshipwerealsoevaluated.Theultimatebearingsofforwardwindandcrosswindonanairshipoutsidethehangarwereproposed.Theresultquantifiestheindicatorsofmeteorologicalconditions,andprovidesreferencesofscientificandrationalmethodsforthelaunchtechnologyofnearspaceairshipinthefuture.

Key words: nearspaceairship, highaltitudelongendurancedemonstrator, forceofconstraint, stabilityanalysis, launchtechnology