Research on the breaking away design of civil aircraft main gear

Break-away of main landing gear is a critical technology of crash worthiness design of modern civil airplane structure. A design method of emergency break-away for typical main landing gear structure is given according to related airworthiness requirements. Primary content covers identification of typical overload case, determination of break-away location, design of break-away mechanism represented as two critical parameters: minimum and maximum break-away load, analyze the break-away principle of fuse pin by means of material mechanics. Research procedure can be viewed as compliance statement of the crash worthiness design of main landing gear, the methods and principle involved within are applicable for design concept of some civil aircraft project to certain extent.