Hi, Are turbo-jet engines supposed to explode above 22,000 feet? I've built a little experimental jet powered kerbal ferry/lander: I've tried two configurations but in both it works fine untill just over 20 thousand feet, (or meters?) where the engines just fall off! It doesn't say they explode, but "Structural linkage between turbojet engine and fuel tank failed", but that might be because the engine exploded... This might either be a feature of jet engines, or I've done something wrong! Also, if it is a feature - is there an easy way to shut off engines like in a 'stage' (turning on is easy, now I want the next stage to turn OFF the turbo-jets and move to the liquid rocket) Thanks