Among the most successful of the early helicopters, Sikorsky's H-19/S-55 helped move the helicopter from being a potentially useful curiosity to an accepted way of moving men and light payloads around battle zones, helping to pioneer the air mobility concept.
The H-19 design built on Sikorsky's H-18/HO5S experience, but was considerably larger and more powerful; importantly, the engine (a Wright R-1300) was moved to the nose and the crew compartment relocated upwards, allowing a relatively large cargo compartment with sufficient room for ten passengers.
H-19B: R-1300-3 engine; 270 built
SH-19: H-19B conversions for SAR
H-19C/D: Transports for US Army
HO4S-1: H-19A for US Navy; 10 built
HO4S-3: H-19B for USN
HO4S-3G: SAR version for US Coast Guard
Photo: Frontal shot of an S-55 fitted with stub wings. Air Pictorial May 1960 p.167
Photo: CH-19E BuNo 129022 in storage, 1967. Warbirds International November 2000 p.44
Color profile: French S-55 MM53180 The Encyclopedia of 20th Century Air Warfare, edited by Chris Bishop p.463
Cutaway diagram of an S-55, plus photos of an HMX-1 HRS-3 and RCAF H-19s #9624 and #9627 Modern Military Aircraft Anatomy p.160-161
Revell issued H-19 kits in both 1/72 and 1/48 scales
A virtual tour of the NMUSAF's UH-19B cockpit