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R-4 vs TH-55 Osage

Sikorsky R-4 military helicopters side profile drawing
🇺🇸 R-4
Hughes TH-55 Osage military helicopters side profile drawing
🇺🇸 TH-55 Osage
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Specifications
R-4 TH-55 Osage
Origin country 🇺🇸 United States 🇺🇸 United States
Category Military Helicopters Military Helicopters
Manufacturer Sikorsky Hughes
First flight 13 January 1942 2 October 1956
Year introduced 1944 1961
Number produced 131 units 2800 units
Average unit price $10K --
Wingspan 11.6 m 7.7 m
Height 3.8 m 2.5 m
Length 10.8 m 8.8 m
Maximum speed 121 km/h 140 km/h
Operational range 210 km 480 km
Service ceiling 2,400 m 4,000 m
Max. takeoff weight 1,150 kg 703 kg
Empty weight 950 kg 435 kg
Total thrust 0 1 x 130 kW
Performance Radar Chart

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).

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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.