Doing it in helos is old hat. At Sikorsky (before my time) they took an S-52, (now being sold by a FL firm as the "Hummingbird" as a kit) put a small turbine in it, called it the S-59 and at one point did 17 (or was it 19) consecutive loops in it. I've seen an 8mm movie one of the mechs. made, it's boring; all you see is a dot going round n' round. And then in the middle 60's there was a marine Major ?Goulleigh? that we called the "Mad Major". With company approval, (and after a computer simulation) he proceeded to loop AND roll a CH-53A Sea Stallion.
Allen G. Wiesner KR-2SS/TD S/N 1118 65 Franklin Street Ansonia, CT 06401-1240 (203) 732-0508 flash...@usadatanet.net
