Thanks for the comment! The 'Ray apparently had triangular shaped thingys, called'trimmers', on each side of the fuse which were set upward for T/O and leveled for flight. Supposedly, they had a very high angle of attack for landing and looked like a duck landing. There was one fuzzy photo of one making a carrier landing and it was nose HIGH! It had no flaps, but, in theory, the slats should help in a slow, high angle landing approach. From reading, it appears several of the 'Golden Age' jets had spring loaded slats/l.e. flaps(F 86,e.g.) but were bolted up since they were problematic in combat. I would make servo operated, since I wouldn't know how you could figure out air pressure on a model at say 25mph-but that would be interesting- so as to determine what size springs to use.