"Philip, will Pixhawk 2 be ITAR free? Have you any study about keeping FC free to export? I heard some countries (not blacklisted ones) had some issues with purchasing Pixhawk from USA."
"It's the best Kalman Filter tutorial I ever seen (have I missed something?), thanks Simon! I only wonder is there any purpose not to use bold letters for vectors notation?"
"I know designers of D-27 engine and SV-27 propfan for Antonov An-70 had some problems with vibrations and extra noise. After initial testing program they put propellers bit far from each other. But you should admit that SV-27 propfan utilizes…"