The critical altitude for the latest Austro AE-300 engine and software is actually 11,500 feet (rather than 10,500 feet) based on a video presentation by an Austro Engine marketing manager (see http://www.youtube.com/watch?v=kRL-2033lok), but more importantly, what's in the DA42-VI AFM/POH and what I've observed when flying at altitude.Antoine wrote:What do you think?
In particular, the DA42-VI AFM shows the plane able to make 92% power at 16,000 feet (and 85% power at 18,000 feet), and I've been able to confirm this in flight. 92% of 168 hp is 155 hp, whereas your graph appears to show only about 145 hp at 16,000 feet. So the Austro hp advantage at higher altitudes is 10 hp better than what's shown in your first graph.
For the power to weight ratio, I'm not sure why you chose 1940 kg for the DA42-VI, since most DA42-VI aircraft (without the very recent weight increase to 1999 kg) have a MTOW of only 1900 kg.
But I still like what you've done.