R-4 vs TH-55 Osage
Overview
The R-4 and the TH-55 Osage are both Military Helicopters, manufactured by Sikorsky and Hughes respectively.
Top speed is 121 km/h for the R-4 vs 140 km/h for the TH-55 Osage. The R-4 has an operational range of 210 km vs 480 km for the TH-55 Osage. The TH-55 Osage operates at altitudes up to 4,000 m compared to 2,400 m for the R-4.
The R-4 has been produced in 131 units vs 2,800 for the TH-55 Osage. The R-4 first flew 14 years before the TH-55 Osage (1942 vs 1956).
| American helicopter from the 1940s, first to be produced in quantity, used primarily in World War II for rescue operations. | |
| Origin country | 🇺🇸 United States |
| Category | Military Helicopters |
| Manufacturer | Sikorsky |
| First flight | 13 January 1942 |
| Year introduced | 1944 |
| Number produced | 131 units |
| Average unit price | $10K |
| American training helicopter, prominent during the Vietnam War, extensively utilized for instructional duties by the US Army. | |
| Origin country | 🇺🇸 United States |
| Category | Military Helicopters |
| Manufacturer | Hughes |
| First flight | 2 October 1956 |
| Year introduced | 1961 |
| Number produced | 2800 units |
| Average unit price | -- |
| Wingspan | 11.6 m ◉ |
| Height | 3.8 m ◉ |
| Length | 10.8 m ◉ |
| Maximum speed | 121 km/h ◉ |
| Operational range | 210 km ◉ |
| Service ceiling | 2,400 m ◉ |
| Max. takeoff weight | 1,150 kg ◉ |
| Empty weight | 950 kg ◉ |
| Total thrust | 0 ◉ |
| Wingspan | 7.7 m ◉ |
| Height | 2.5 m ◉ |
| Length | 8.8 m ◉ |
| Maximum speed | 140 km/h ◉ |
| Operational range | 480 km ◉ |
| Service ceiling | 4,000 m ◉ |
| Max. takeoff weight | 703 kg ◉ |
| Empty weight | 435 kg ◉ |
| Total thrust | 1 x 130 kW ◉ |
Performance Radar Chart
Detailed Comparison
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Frequently Asked Questions
Which is faster, the R-4 or TH-55 Osage?
The TH-55 Osage is faster with a maximum speed of 140 km/h compared to the R-4's 121 km/h, a difference of 19 km/h.
Which has longer range, the R-4 or TH-55 Osage?
The TH-55 Osage has a longer range at 480 km compared to the R-4's 210 km.
Which can fly higher, the R-4 or TH-55 Osage?
The TH-55 Osage has a higher service ceiling at 4,000 meters (13,123 ft) compared to the R-4's 2,400 meters (7,874 ft).
Which is heavier, the R-4 or TH-55 Osage?
The R-4 has a higher maximum takeoff weight at 1,150 kg compared to the TH-55 Osage's 703 kg.
Which is larger, the R-4 or TH-55 Osage?
The R-4 is longer at 10.8 meters compared to the TH-55 Osage's 8.8 meters.
Which entered service first, the R-4 or TH-55 Osage?
The R-4 entered service first in 1944, 17 years before the TH-55 Osage which entered service in 1961.
Which has been built in greater numbers, the R-4 or TH-55 Osage?
The TH-55 Osage has been produced in greater numbers with 2,800 units compared to 131 units of the R-4.