|Sikorsky S-53 / XHJS-1|
|First flight||22 September 1947|
|Primary user||United States Navy|
|Developed from||Sikorsky S-51|
The Sikorsky XHJS-1 (manufacturer designation S-53), was developed by Sikorsky Aircraft to meet a Naval requirement for a utility helicopter. The XHJS-1 was not ordered into production and only two prototypes were built.
Design and development
Powered by a 525 hp (391 kW) Continental R-975-34, the S-53 was a development of the S-51 designed for use on aircraft carriers. The tail rotor was raised above head-height to give more clearance and the landing gear was made stronger to enable operations from a moving deck. Other enhancements were a folding main rotor and the option for amphibious landing gear. Two prototypes were ordered by the United States Navy as the XHJS-1 and the first flew on 22 September 1947. The type was evaluated against the Piaseckli XHJP-1. With the Piasceki design being ordered as the HUP-1 by the Navy, the S-53 was not developed further.
- Prototype Naval utility helicopter, two built (BuNo 30368 and 30370).
- Crew: one
- Capacity: three
- Powerplant: 1 × Continental R-975-34 , 525 hp (391 kW)
- Main rotor diameter: 49 ft 0 in (14.94 m)
- Related development
- Aircraft of comparable role, configuration and era
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- Andrade 1979, p. 194