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Melsbroek Airbase B - MD Helicopters Explorer 01

The MD Helicopters MD Explorer is a light twin-engined utility helicopter designed and initially produced by the American rotorcraft specialist McDonnell Douglas Helicopter Systems.

 

On 18 December 1992, the maiden flight was conducted, initial certification for the type followed roughly two years later. The initial model, the MD 900, was joined by an improved successor, the MD 902, during the late 1990s. The Explorer is currently produced by MD Helicopters.

 

The MD Helicopters MD Explorer is a twin engined utility helicopter; it is equipped with a fully-articulated five-bladed main rotor system as well as bearingless composite flexbeams and rotor hub. The fuselage is composed of composite materials, such as carbonfibre, that are resistant to corrosion even in hostile marine environments, it also incorporates lightning strike protection measures. The tail features similar construction. It is powered by a pair of Pratt & Whitney Canada-built PW200 turboshaft engines. It can be flown by a single pilot, and carry up to six passengers at a time.

 

A key feature of the MD Explorer is the NOTAR anti-torque system; instead of a traditional tail rotor, a fan exhaust is directed out of slots in the tail boom, thus using the Coandă effect for yaw control. The benefits of NOTAR have reportedly included reduced pilot workload, greatly minimised external noise levels, and significant improvements in safety, particularly when operating in confined areas and from offshore platforms, along with general performance and controllability enhancements. It is disputed which of the fenestron and NOTAR approaches produces less noises.Boeing retains the design rights to the NOTAR technology despite selling the former McDonnell Douglas civil helicopter line to MD Helicopters in early 1999.

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Uploaded on July 23, 2023
Taken on May 28, 2023