c.g. shift on freighter aircraft 1

[compositestress]

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

 

[Nigel]

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

http://www.canamaero.com