Sikorsky R-4

The Sikorsky R-4 was a two-place helicopter designed by Igor Sikorsky with a single three-bladed main rotor and powered by a radial engine. The R-4 was the world's first large-scale mass-produced helicopter and the first helicopter to enter service with the United States Army Air Forces Navy and Coast Guard as well as for the United Kingdom's Royal Air Force and Royal Navy.

combat, the Sikorsky R-4, in May of 1944. The Chindits were delighted to hear they had their own private air force.1
developed the Sikorsky R-4Sikorsky R-4The Sikorsky R-4 was a two-place helicopter designed by Igor Sikorsky with a single, three-bladed main rotor and powered by a radial engine.2
I subsequently received a Sikorsky R-4 which was a little over one inch long.3
Sikorsky R-4 at Freeman Field The helicopter training program was short lived because in 4
Sikorsky R-4 helicopter hovering overhead at an RAF Helicopter School in Andover.5
Sikorsky R-4 Hoverfly was the first practical helicopter and the most important forerunner of all civil and military rotary wing aircraft now flying around the world.6

Made by Sikorsky Aircraft.

It is the successor of the Vought-Sikorsky VS-300 .

The Sikorsky R-4 saw limited action during the war, but for a few soldiers, its missions were of critical importance-it gets credit for the first helicopter rescue by U.S.7
the Sikorsky R-4 that was used by the Coast Guard in the US and overseas in Burma and on Saipan.8
The Sikorsky R-4 was a two-place helicopter designed by Igor Sikorsky with a single, three-bladed main rotor and powered by a radial engine.9
the Sikorsky R-4, it first flew in 1942, and the R-4B saw combat for the first time in May 1944.10
The USAAF flew Sikorsky R-4 helicopters in the CBI theater, performing the first helicopter casualty evacuation. It could only carry one person other than the pilot.11
A Sikorsky R-4 helicopter showed that it had a definite military role when was used in April 1944, in a dramatic rescue of three downed airmen in the steamy jungles 12
More Users
Royal Air Force
United States Coast Guard
United States Navy
Jet Or Prop
prop
Designer
Igor Sikorsky
Predecessor
Vought-Sikorsky VS-300
Length Alt
10.2 m
Power Alt
149.0
Loaded Weight Main
2581.0
Height Alt
3.8 m
Type Of Prop
piston
Developed Into
Sikorsky R-6
Max Speed Main
75 mph
Developed From
Vought-Sikorsky VS-300
Capacity
1
Cruise Speed Main
65 mph
Ceiling Main
8000.0
Number Built
131
Crew
1
Span Main
38.0
Cruise Speed Alt
105.0
Height Main
378.46
Primary user
Span Alt
11.5 m
Plane Or Copter?
Engine(prop)
Warner Scarab
Manufacturer
Number Of Props
1
First Flight
13
Production End Year
1944
Loaded Weight Alt
1170.0
Power Main
200 hp
Production Start Year
1942
Empty Weight Alt
952.0
Length Main
1026.16
Max Speed Alt
120.0
Related
* Vought-Sikorsky VS-300* Sikorsky R-5
Empty Weight Main
2098.0
Ceiling Alt
2400 m
Produced
1942
Category

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