Used with permission. The XR-4 completed a 761-mile (1,225 km) cross-country flight from Connecticut to Wright Field, Ohio, set a service ceiling record of 12,000 feet (3,700 m), while achieving 100 flight hours without a major incident and an airspeed approaching 90 mph (140 km/h).
[zarchiwizowane z … After an initial prototype was built and flown in January, 1942, 30 were built for test use by the U.S. Army Air Force, Navy, Coast Guard and the British Royal Navy. [9]Royal Air Force Hoverfly I in use by Fairey Aviation in late 1945Naval Helicopter Association Historical Society-Sponsored by Sikorsky a Lockheed Martin Company | © 1997, All rights reserved The higher-than-normal altitude required a downhill run of 20 ft (6.1 m) to get airborne. The Sikorsky R-4, or VS-316A, was a definitive development of Igor Sikorsky's successful pre-war VS-300, and in 1944 became the first helicopter in the world to be placed in series production. [7] Despite the high altitude, humidity, and capacity for only a single passenger, Harman rescued a downed liaison aircraft pilot and his three British soldier passengers, two at a time.
In U.S. Navy and U.S. Coast Guard service, the helicopter was known as the Sikorsky HNS-1.
The R-4 was the world's first production helicopter and is the offspring of Igor Sikorsky's famed VS-300 which flew in 1940. Linki zewnętrzne. The VS-316 was designated the XR-4, under the United States Army Air Forces’ series for “Rotorcraft”.
On 22–23 April 1944, U.S. Army Lieutenant Carter Harman of the 1st Air Commando Group conducted the first combat rescue by helicopter using a YR-4B in the China-Burma-India theater. [citation needed] The XR-4 exceeded all the previous helicopter endurance, altitude and airspeed records that had been set before it. A production R-4B on Okinawa in 1945.
(PL) Evžen Všetečka, Sikorsky R-4B Hoverfly I, www.plastikowe.pl. Sikorsky R-4B Hoverfly U.S.
Вадим Михеев. Like the VS-300, it had a framework of heavy-gauge steel tube, and all but the extreme rear end of the fuselage was fabric-covered, as were the 10.97m diameter main rotor blades.
Чертеж "Sikorsky R-4 Hoverfly" Чертеж "Sikorsky R-4B Hoverfly" Список источников: Крылья Родины. [8] On 22–23 January 1945, another rescue by the R-4 involved several legs for refueling and navigating through passes between mountains nearly 10,000 feet (3,000 m) tall, to reach a weather station located at an elevation of 4,700 feet (1,400 m). The R-4 was the world's first production helicopter and is the offspring of Igor Sikorsky's famed VS-300 which flew in 1940. URL consultato il 09-07 …
One went to Burma for hot weather operations and another to Alaska for cold weather trials. In British service, it was known as the Hoverfly.The VS-316 was developed from the famous experimental VS-300 helicopter, invented by Igor Sikorsky and publicly demonstrated in 1940. Helicopters And Other Rotorcraft Since 1907: Уголок неба. The first helicopter produced in quantity for the U.S. military forces, the Sikorsky R-4 was developed from the pre-war VS-300 model. Galeria zdjęć śmigłowca Sikorsky R-4B Hoverfly I. On 22–23 April 1944, U.S. Army Lieutenant Carter Harman of the 1st Air Commando Group conducted the first combat rescue by helicopter using a YR-4B in the China-Burma-India theater. It is Sikorsky YR 4 B Hoverfly. Image source: Robert Kastner from WWII Pacific War Eagles by Jeff Ethell and Warren Bodie. The Sikorsky R-4 was a two-seat helicopter designed by Igor Sikorsky with a single, three-bladed main rotor and powered by a radial engine.
Helicopter . [4]Following the sinking in January 1944 of USS Turner, a Sikorsky R-4 flew life saving blood plasma for the casualties from New York.
Hoverfly I: brytyjskie oznaczenie śmigłowców R-4 eksploatowanych przez Royal Air Force i Royal Navy. One went to Burma for hot weather operations and another to Alaska for cold weather trials.
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sikorsky r 4b hoverfly