H155 / EC155 Dauphin 2 vs R-4
The H155 / EC155 Dauphin 2 and the R-4 are both Military Helicopters, manufactured by Airbus Helicopters and Sikorsky respectively. The H155 / EC155 Dauphin 2 reaches 324 km/h — 2.7x the R-4's 121 km/h. The H155 / EC155 Dauphin 2 has an operational range of 790 km vs 210 km for the R-4. The H155 / EC155 Dauphin 2 operates at altitudes up to 4,572 m compared to 2,400 m for the R-4. At 4,920 kg MTOW, the H155 / EC155 Dauphin 2 is 4.3x the R-4's 1,150 kg. The H155 / EC155 Dauphin 2 has been produced in 116 units vs 131 for the R-4. The R-4 first flew 55 years before the H155 / EC155 Dauphin 2 (1942 vs 1997).
| French multi-role helicopter, modern variant known for its use in offshore transportation and emergency medical services globally. | |
| Origin country | 🇫🇷 France |
| Category | Military Helicopters |
| Manufacturer | Airbus Helicopters |
| First flight | 17 June 1997 |
| Year introduced | 1999 |
| Number produced | 116 units |
| Average unit price | -- |
| 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 |
| Wingspan | 12.6 m ◉ |
| Height | 4.4 m ◉ |
| Length | 14.3 m ◉ |
| Maximum speed | 324 km/h ◉ |
| Operational range | 790 km ◉ |
| Service ceiling | 4,572 m ◉ |
| Max. takeoff weight | 4,920 kg ◉ |
| Empty weight | 2,618 kg ◉ |
| Total thrust | 2 x 357 kW ◉ |
| 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 ◉ |
Performance Radar Chart
Frequently Asked Questions
Which is faster, the H155 / EC155 Dauphin 2 or R-4?
The H155 / EC155 Dauphin 2 is faster with a maximum speed of 324 km/h compared to the R-4's 121 km/h, a difference of 203 km/h.
Which has longer range, the H155 / EC155 Dauphin 2 or R-4?
The H155 / EC155 Dauphin 2 has a longer range at 790 km compared to the R-4's 210 km.
Which can fly higher, the H155 / EC155 Dauphin 2 or R-4?
The H155 / EC155 Dauphin 2 has a higher service ceiling at 4,572 meters (15,000 ft) compared to the R-4's 2,400 meters (7,874 ft).
Which is heavier, the H155 / EC155 Dauphin 2 or R-4?
The H155 / EC155 Dauphin 2 has a higher maximum takeoff weight at 4,920 kg compared to the R-4's 1,150 kg.
Which is larger, the H155 / EC155 Dauphin 2 or R-4?
The H155 / EC155 Dauphin 2 is longer at 14.3 meters compared to the R-4's 10.8 meters.
Which entered service first, the H155 / EC155 Dauphin 2 or R-4?
The R-4 entered service first in 1944, 55 years before the H155 / EC155 Dauphin 2 which entered service in 1999.
Which has been built in greater numbers, the H155 / EC155 Dauphin 2 or R-4?
The R-4 has been produced in greater numbers with 131 units compared to 116 units of the H155 / EC155 Dauphin 2.