Sikorsky S-72 Sikorsky S-72 The Sikorsky S-72 was an experimental hybrid helicopter/fixed-wing aircraft developed by helicopter manufacturer Sikorsky Aircraft. The Rotor Systems Research Aircraft (RSRA) was developed by Sikorsky for NASA and the Army. The RSRA was developed to allow the inflight measurement of helicopter rotor characteristics. The airframe was developed using an existing Sikorsky S-61 main rotor, an S-61 roller gearbox, and a highly modified Sikorsky S-67 airframe. The RSRA could be fitted with TF34 turbofans and wings to allow compound helicopter configurations to be experimentally investigated at speeds up to . In addition, it could fly as a fixed-wing aircraft
Sikorsky S-29-A varied career in merchandising (Curlee Clothing) and acting as a flying cigar store (among other roles) . After being bought by Roscoe Turner in 1929, it appeared in the Howard Hughes Hollywood movie "Hell's Angels", taking the part of a Gotha bomber. The S-29-A crashed during filming and was damaged beyond repair. Sikorsky S-29-A The Sikorsky S-29-A was a twin-engine biplane airliner, first flown in 1924. It was the first aircraft that aviation pioneer Igor Sikorsky designed and built after coming to the United States, hence the special "-A" suffix signifying "America". The pilot and mechanic sat in an open