Autodesk 123d Make is a free program used to process models for manufacture using lasers and cnc routers in many different ways such as interlocking layers or simply stacked layers. One of its more recent updates has given it the ability to slice up 3d models into 3d layers. I am guessing though an object as complex as a jet will need some processing before to remove parts that need slicing in other directions etc. Its free and pretty easy might be worth a try.