About the MCDONNELL DOUGLAS HELICOPTER 600N
The McDonnell Douglas Helicopter 600N, later known as the MD Helicopters MD Explorer, stands as a significant innovation in the realm of light utility helicopters. Initially launched in the early 1990s, this aircraft emerged from the need for a more versatile and efficient helicopter that could serve various civil and parapublic roles. Focusing on attributes like noise reduction, safety, and enhanced performance, the 600N was positioned to appeal to law enforcement, emergency medical services (EMS), corporate transport, and utility operations.
One of the most groundbreaking features of the MD 600N was the introduction of the NOTAR (No Tail Rotor) system. Developed by Hughes Helicopters, which McDonnell Douglas acquired, NOTAR technology eliminates the need for an anti-torque tail rotor. This system utilizes the CoandΔ effect, where air expelled from the tail boom creates thrust and counteracts the torque of the main rotor. This results in several benefits: reduced noise levels, enhanced safety with fewer mechanical parts susceptible to failure, and decreased susceptibility to damage from obstacles or during landing in tight spaces.
Key Features and Capabilities
Production for the MD 600N began in earnest, and the helicopter found a niche in roles requiring agility and reduced operational noise. Law enforcement agencies favored the aircraft for its ability to provide surveillance over urban environments with minimal disturbance, while EMS providers benefited from the spacious cabin, high useful load, and ease of landing in confined areas. The corporate sector appreciated the reliable and smooth ride, combined with advanced avionics and low operating costs.
Despite its many advantages, the high costs associated with NOTAR technology limited the broader adoption of the MD 600N. However, among operators who prioritize the specific benefits it offers, the aircraft retains a loyal following. Today, the MD 600N exemplifies how innovative design and specialized functionality can carve out unique spaces in the competitive field of general aviation helicopters.