Change comparison
vs
Specifications
|
Bell 47 |
R-4 |
| Origin country |
🇺🇸 United States |
🇺🇸 United States |
| Category |
Military Helicopters |
Military Helicopters |
| Manufacturer |
Bell |
Sikorsky |
| First flight |
1 January 1946 |
13 January 1942 |
| Year introduced |
1946 |
1944 |
| Number produced |
5600 units |
131 units |
| Average unit price |
-- |
$10K |
| Wing area |
100.8 m² |
-- m² |
| Wingspan |
11.3 m |
11.6 m |
| Height |
2.8 m |
3.8 m |
| Length |
9.6 m |
10.8 m |
| Maximum speed |
169 km/h |
121 km/h |
| Operational range |
396 km |
210 km |
| Service ceiling |
-- m |
2,400 m |
| Max. takeoff weight |
1,338 kg |
1,150 kg |
| Empty weight |
859 kg |
950 kg |
| Total thrust |
1 x 210 kW
|
0
|
Overview
The Bell 47 and the R-4 are both Military Helicopters, manufactured by Bell and Sikorsky respectively.
Top speed is 169 km/h for the Bell 47 vs 121 km/h for the R-4. The Bell 47 has an operational range of 396 km vs 210 km for the R-4.
The Bell 47 has been produced in 5,600 units vs 131 for the R-4. The R-4 first flew 4 years before the Bell 47 (1942 vs 1946).
Detailed Comparison
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Which is faster, the Bell 47 or R-4?
The Bell 47 is faster with a maximum speed of 169 km/h compared to the R-4's 121 km/h, a difference of 48 km/h.
Which has longer range, the Bell 47 or R-4?
The Bell 47 has a longer range at 396 km compared to the R-4's 210 km.
Which can fly higher, the Bell 47 or R-4?
The R-4 has a higher service ceiling at 2,400 meters (7,874 ft) compared to the Bell 47's 0 meters (0 ft).
Which is heavier, the Bell 47 or R-4?
The Bell 47 has a higher maximum takeoff weight at 1,338 kg compared to the R-4's 1,150 kg.
Which is larger, the Bell 47 or R-4?
The R-4 is longer at 10.8 meters compared to the Bell 47's 9.6 meters.
Which entered service first, the Bell 47 or R-4?
The R-4 entered service first in 1944, 2 years before the Bell 47 which entered service in 1946.
Which has been built in greater numbers, the Bell 47 or R-4?
The Bell 47 has been produced in greater numbers with 5,600 units compared to 131 units of the R-4.
