The flying science bay: Still experimental. Flies like a dream but has some delta V return issues when going orbital. Need to add a liquid fuel tank somewhere (maybe replace one science junior) to give it the extra kick it needs to modify for return interplanetary trips once I unlock Ion engines. Turns out the stall speed is quite low. At 14.4 [m/s] it still responds reasonably well and can pitch up and gain altitude... It can take off with additional fuel tanks along the wings, but that does bad things to the take off speed.