Originally Posted by
HelixCarbon
but the plan as far as I can tell is to reach individual owners first and use that as proof of concept for the manufacturers.
You may want to readdress that plan. The individual owners of an S-LSA in the US will not be able to install your prop on their aircraft unless the manufacturer provides the acceptable data as it is considered a major alteration. Now if the owner elects to convert their S-LSA to an E-LSA in order to install your prop then it would not need the mfgr. data, however, they may run across a different problem similar to what an amateur-built (E/AB) owner would face installing your prop. And at the E/AB level a new prop install with no engine history behind it, will probably push the aircraft major change required Phase 1 flight testing beyond the typical 5 hours and possibly out to the 25-40 hour requirement. Something to think about.