Not to be a naysayer or pile on, but Richard Mole was designing a new airplane in the UK with a carbon fiber spar, and had to build a full-scale spar and test apparatus, and bring it to LAA headquarters and demonstrate a live test, along with a pile of calculations that he said was several inches thick, which supported and proved his calculations and the test results matched.
So yes, carbon fiber spars will almost certainly require more work than you can imagine to get past Engineering. The few pounds you will save in the effort will likely cost years and thousands of BP. But some people enjoy the chase and the sense of accomplishment at pulling it off, so feel free to blaze a trail for us... Mark Langford ML at N56ML.com http://www.n56ml.com
