Optimum Size Selection For Spring Loaded Detachable Canister Launch Vehicle Interface For Multistage Long Range System
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2013, Vol 5, Issue 1
Abstract
Canister-launch vehicle(LV) interface size is optimised using selective assembly method. Any over or under size of the interface is a mission critical. LV and canister are made of nos of sections and their respective positions are fixed in a assembly. Due to tolerance stack up in the assembly shape of the canister and LV varies from a perfect cylinder.Optimum size of the interface is found out for the assemblies where it satisfies the functionality without any interference or extra clearance for canister-LV assembly. Various sets of sections are available for LV and canister in production line and they are assembled selectively based on their effect on final assembly deviation. Assembly deviations are accepted such that the range of deviation for LV or for canister is minimum. One particular size of the interface suits to all the canister-LV combination without affecting the mission requirement. This paper explain how optimum inter face size is decided for sets of canister-LV assemblies based on tolerance stack up model. Selective assembly method and genetic algorithm are used to find out suitable canister-LV combinations. The method of finding out optimum interface size helps to avoid nos of assembly-disassembly trials and related testing to find out suitable canister-LV pair and leaves remote chances of getting some assemblies which does not meet the functional requirement.
Authors and Affiliations
Tarak Nath De , S Sundarrajan , G Krishna Mohana Rao
Keywords
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