Bolt-set design method for segment connection of launch vehicle
Launch vehicles are very enormous.For the convenience of manufacturing,storage and transportation,the launch vehicle is often separated by specific cross sections;the body is built in sections and then assembled for use.The connection be-tween sections adopts bolt-set.However,the current bolt-set design method mainly adopts the fixing of machine base and the flange connection,which is not convenient for the launch vehicle's segment connection.In this article,efforts are made to derive the formulas of the bolt's maximum tension and preload when the loads of bending and axial pull or push are exerted on the launch vehicle's body.Also,the crushing conditions are analyzed in detail.Finally,the design method is verified by means of some examples.
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