Eurocopter EC135

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The Eurocopter EC135 is a twin-engine civil helicopter produced by Eurocopter (now part of Airbus Helicopters). It is widely used by police and ambulance services and for executive transport. It is known for its high performance, safety features, and versatility, which have made it one of the most popular helicopters in its class.

Design and Development

The EC135's development began in the 1980s as the MBB Bo 108 by Messerschmitt-Bölkow-Blohm (MBB). The design was revolutionary, featuring a Fenestron tail rotor instead of the traditional tail rotor, which improved safety and noise levels. After MBB became part of Eurocopter in 1992, the helicopter was renamed the EC135. It made its first flight on 15 February 1994 and was certified by the German Luftfahrt-Bundesamt in 1996. The EC135 has a composite airframe and a digital automatic flight control system (AFCS).

Variants

The EC135 comes in several variants, including the EC135 T1 and T2, powered by Turbomeca Arrius engines, and the EC135 P1 and P2, powered by Pratt & Whitney Canada PW206B engines. The EC135 T3/P3 variants, introduced in 2011, feature improved performance and payload capacity.

Operational Use

The EC135 is used around the world for a variety of roles, including air ambulance services, law enforcement, executive transport, and flight training. Its versatility and safety features, such as the Fenestron tail rotor and energy-absorbing landing gear, make it suitable for operations in urban areas and challenging environments.

Specifications

The EC135 typically seats one or two pilots and up to seven passengers. It has a maximum takeoff weight of approximately 2,910 kg (6,415 lb) and can reach speeds of up to 259 km/h (161 mph). Its range and service ceiling are also competitive, making it a preferred choice for many operators requiring a light twin-engine helicopter.

Safety and Innovations

The EC135 is equipped with advanced avionics and safety features, including the Helionix avionics suite in later models, which provides enhanced situational awareness and reduced pilot workload. Its safety record and the introduction of new technologies have contributed to its popularity in the civil aviation market.

Legacy

The EC135 has established itself as a reliable and versatile helicopter, with over 1,400 units delivered worldwide. Its success has led to the development of the Airbus Helicopters H135, an updated version with improved performance and new technology.