Hi all,
As one who was responsible for the collection and validity of data collected. The main problem was availability of air frames and the fitment of the data collecting equipment. Also ensuring valid and consistent results.
The main problem was getting the results accepted by required authority and verified. Approval of the various profiles that required confirmation re actual helicopter performance against actual flight performance was not a simple task.
Will stop now as the technical **** is tedious and not interesting to some. as i am retired and may be in need some stimulation bell me on PM if interested on any further info.