Airbus Helicopters H155 / EC155 Dauphin 2

Summary

Description

The Eurocopter EC155, later rebranded as the Airbus Helicopters H155, is a twin-engine, long-range, medium-lift helicopter originally developed by the French company Aérospatiale, which later became part of Eurocopter and subsequently Airbus Helicopters. It was introduced in 1999 as an enhanced version of the earlier AS365 Dauphin. The primary improvements over its predecessor include a more advanced avionics package, a redesigned cabin providing more internal space, and a Fenestron tail rotor for improved performance and reduced noise. The helicopter is used in various roles, including VIP transport, search and rescue, law enforcement, and medical evacuation.

The development of the EC155/H155 aimed to build upon the success of the AS365 Dauphin series, targeting advancements in passenger comfort, performance, and operational capabilities. One of the most notable design features is the Fenestron tail rotor, which is enclosed and offers not only better anti-torque control but also significantly reduced noise levels compared to conventional tail rotors. This is a crucial feature for operations in noise-sensitive environments or for VIP transportation.

In terms of avionics, the EC155 was one of the earlier adopters of a fully integrated glass cockpit, utilizing digital displays to reduce pilot workload and improve situational awareness. The helicopter is equipped with a four-axis autopilot system, which further enhances flight stability and safety.

The cabin was redesigned to offer more internal space, accommodating up to 13 passengers in addition to the 1 or 2 pilot configuration. The increased cabin space is a direct response to market demand for a more comfortable and versatile interior, suitable for various roles ranging from executive transport to medical evacuation. High-end variants of the cabin come with features like plush leather seats, soundproofing, and even in-flight entertainment systems for VIP clients.

Powering the EC155 are two Turbomeca Arriel 2C2 turboshaft engines, providing improved performance over its predecessor. These engines are not only more powerful but also more fuel-efficient, extending the helicopter's range and allowing it to carry heavier payloads.

Operational history

The EC155/H155 entered into service in 1999 and has since been deployed in a variety of roles across multiple sectors. In the civilian sector, it has been popular for executive and VIP transport, medical evacuation, and search and rescue missions. Oil and gas companies have also employed it for offshore transport due to its range and payload capabilities. Some police and law enforcement agencies have utilized the EC155/H155 for surveillance, reconnaissance, and occasionally for tactical operations.

In terms of international reach, the EC155/H155 has found buyers across the globe, from Europe to Asia and the Americas. Its operational history is largely accident-free, a testament to its design and safety features, though like all aircraft, it hasn't been completely immune to incidents.

It should be noted that while the EC155/H155 has been modified for some military or paramilitary roles, it hasn't seen widespread adoption in heavy combat or in the kinds of intensive military operations for which dedicated attack or military transport helicopters are designed. Instead, it tends to fill specialized niches where its long-range, good payload capacity, and versatility are advantageous.

Variants

• EC155 B: Initial production version of the helicopter, powered by Turbomeca Arriel 2C1 turboshaft engines.
• EC155 B1: Upgraded version, equipped with Turbomeca Arriel 2C2 engines and features a five-bladed main rotor for improved performance and reduced vibration.

It's worth noting that Airbus has also developed a successor to the EC155, the H160, which incorporates even more advanced technologies and performance capabilities. While not a variant of the EC155, the H160 signals the direction Airbus is taking, probably making the EC155 less prominent in the market over time.

Technical specifications

Current operating countries

Country		Units
	India	114
	Tanzania	2
	South Korea	0 (+200)

Numbers in parentheses, e.g. '(+5)', indicate units ordered but not yet delivered.

All operators

France • India • South Korea • Tanzania

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