Aircraft Photo of N4782S | Sikorsky HRS-1 (S-55B) | USA - Air Force | #50458
Registration / Serial:N4782S
Aircraft Original Type:Sikorsky S-55
Aircraft Generic Type:Sikorsky S-55 (H-19/HO4S/HRS/Chickasaw)
Aircraft Version:Sikorsky HRS-1 (S-55B)
C/n (msn):55033
Operator / Titles:USA - Air Force
City / Airport:Washington - Dulles InternationalMap
Region / Country:Virginia, United States
Airport Codes:ICAO: KIAD   IATA: IAD   Local: IAD   Other: -
Collection:National Museum of the US Air Force
Photo Date:8 April 2015
Photo by:Alastair T. Gardiner
Photo ID: 50458
Photo Comment

The H-19/HRS-1 was the first practical single-rotor utility helicopter and the first in Sikorsky's successful S-55 series. The centre-of-gravity problems of earlier models were solved by shifting the engine to the front and the passenger compartment to beneath the rotor hub. Other innovations included offset-flapping hinges and hydraulically boosted irreversible controls. This example is now on display at the Steven F. Udvar-Hazy Center of the Smithsonian NASM. Ex US Marines 127799.

This photo was added on 17 March 2018, and has since been viewed 47 times.

Submit Correction
Contact Photographer