TURBOTECH is no april's fool joke."increases the efficiency of low power turbines by a factor of 2–3 "
Suggest looking at the publication date of the article.
I wouldn't hold my breath (or miss any meals, or any major life events) waiting for a 2-3 times efficiency improvement in small turbines.
edit: Gotta love the cartoon character board of directors at Turbotech....
I wish I could. I am doing exactly that right now, and the only information I can find is some posted dealer retail prices and the Rotax announcement last year of their 50,000th 4 stroke engine delivery. There IS an engine code (I think even an entire engine section) in the data bank of public information for US registrations, but since I have no DBM programme or experience, I have yet to be able to extract that from those files.I’ve been searching for current Rotax aircraft engine sales volume by year without success. Could you point me to that infirmation?