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R-4 vs SA315 Alouette II

Sikorsky R-4 military helicopters side profile drawing
🇺🇸 R-4
SA315 Alouette II military helicopters side profile drawing
🇫🇷 SA315 Alouette II
Change comparison vs
Specifications
R-4 SA315 Alouette II
Origin country 🇺🇸 United States 🇫🇷 France
Category Military Helicopters Military Helicopters
Manufacturer Sikorsky Sud Aviation
First flight 13 January 1942 12 March 1955
Year introduced 1944 1957
Number produced 131 units 1300 units
Average unit price $10K --
Wingspan 11.6 m 10.2 m
Height 3.8 m 2.8 m
Length 10.8 m 9.7 m
Maximum speed 121 km/h 192 km/h
Operational range 210 km 565 km
Service ceiling 2,400 m 2,300 m
Max. takeoff weight 1,150 kg 1,600 kg
Empty weight 950 kg 895 kg
Total thrust -- 1 x 343 kW
Performance Radar Chart

Overview

The R-4 and the SA315 Alouette II are both Military Helicopters, manufactured by Sikorsky and Sud Aviation respectively.

Top speed is 121 km/h for the R-4 vs 192 km/h for the SA315 Alouette II. The R-4 has an operational range of 210 km vs 565 km for the SA315 Alouette II. The R-4 operates at altitudes up to 2,400 m compared to 2,300 m for the SA315 Alouette II.

The R-4 has been produced in 131 units vs 1,300 for the SA315 Alouette II. The R-4 first flew 13 years before the SA315 Alouette II (1942 vs 1955).

Related Comparisons
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Frequently Asked Questions

Which is faster, the R-4 or SA315 Alouette II?
The SA315 Alouette II is faster with a maximum speed of 192 km/h compared to the R-4's 121 km/h, a difference of 71 km/h.
Which has longer range, the R-4 or SA315 Alouette II?
The SA315 Alouette II has a longer range at 565 km compared to the R-4's 210 km.
Which can fly higher, the R-4 or SA315 Alouette II?
The R-4 has a higher service ceiling at 2,400 meters (7,874 ft) compared to the SA315 Alouette II's 2,300 meters (7,545 ft).
Which is heavier, the R-4 or SA315 Alouette II?
The SA315 Alouette II has a higher maximum takeoff weight at 1,600 kg compared to the R-4's 1,150 kg.
Which is larger, the R-4 or SA315 Alouette II?
The R-4 is longer at 10.8 meters compared to the SA315 Alouette II's 9.7 meters.
Which entered service first, the R-4 or SA315 Alouette II?
The R-4 entered service first in 1944, 13 years before the SA315 Alouette II which entered service in 1957.
Which has been built in greater numbers, the R-4 or SA315 Alouette II?
The SA315 Alouette II has been produced in greater numbers with 1,300 units compared to 131 units of the R-4.