Apparently the BA609 will be able to autorotate as well. Unlike the V-22 that would have in the area of a 4-6000fpm ROD, the 609 may be in the area of 3000fpm (double an avg helicopter). So the best thing to do would be to land it like an airplane when possible, and if not, autorotate and expect to walk away with a dinged up aircraft (the penalties of combining very high speed with vertical t.o. and landing capability). The X-2 variants won't have the same limitations (or the same top speed capability). Dual turbine engine flameouts can occur (i.e., fuel contamination, etc.), but what is the occurrence rate?
Last edited by 21st Century; 16th Jan 2008 at 15:58.