c.g. shift on freighter aircraf

huangyhg

c.g. shift on freighter aircraft
hi all
i am working on a freighter floor and have to account for c.g. shift of the contents of the contains. do i use 5%, 10% or other. also, do i have to account for adjacent containers shifting in different directions. is there and certificating authority guidance on this.
any information would be appreciated.
thanks
cs
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there are no regulations relating to this that i know of.  you need to be conservative and take into account the potential for shifting.  this depends a lot on the design of the restriant systems and the loading instructions.  i am aware of an faa rule of thumb being 5%.  at the end of the day you have to justify your choice.
nigel waterhouse b eng (hon's)
can-am aerospace,llc, canadian aircraft certification centre