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2.4. Air Medical Services: Safety, Low Operating Costs.
The MD 600N® helicopter provides versatile configurations for air medical services. The configuration is a single litter kit for one patient, and is capable of advanced cardiac life support (ACLS) level of medical care.
With its NOTAR® system and small main rotor diameter, the MD 600N® has the ability to land in confined areas. For air medical services, this is an important advantage when picking up patients in tight places or on residential streets.
MULTI-MISSION CAPABILITY
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2.5. For Law Enforcement: A Quiet, Versatile Tool.
In the field of airborne law enforcement, the MD 600N® speed, payload and low operating cost are just a few of its benefits. As a member of the NOTAR® system-equipped family of helicopters, it’s also quieter by far than conventional helicopters. For law enforcement, this is a powerful advantage when pursuing suspects. The MD 600N® is so quiet suspects aren’t usually aware of this craft until it’s virtually on top of them. What’s more, its quiet performance makes it a “good neighbor” to residents of the community.
With its enhanced maneuverability and small rotor diameter, the MD 600N® can negotiate landings in confined areas. Its tail rotor-less system also helps when police are performing rescues on city streets or rough terrain.
The MD 600N’s 115-gallon (435 l)) standard fuel tank provides the ability to conduct longer-range missions, while the aft cabin provides room for more seating and special equipment. A versatile ally, gives police departments the option to expand their mission capabilities to include rescue, surveillance and SWAT operations.
The MD 600N® is authorized to fly with its doors off in several configurations. In addition, it offers an expanded center of gravity envelope for almost any combination of loading. The helicopter has exceptional control power enabling the helicopter to remain stable during rescue missions. With its large windows, the MD 600N® also provides greater visibility for rescuing victims, pursuing suspects or locating accident scenes.
Vulnerability analyses have shown that the NOTAR® system is 60 percent less vulnerable to ballistic damage from small arms, an increasingly important advantage for airborne law enforcers.
SYSTEM DESCRIPTION
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3.0 SYSTEM DESCRIPTION.
The MD Helicopters MD 600N® is a single turbine-engine, rotary-wing aircraft. The fuselage is constructed primarily of aluminum alloy while the NOTAR® anti-torque system components are primarily carbon epoxy composite structure.
Simplicity, low operating cost and maximum commonality with MD 500® Series helicopters were the primary design criteria for the MD 600N® development.
The main rotor is a fully articulated six-blade system with excellent control and maneuverability characteristics. It shares many rotor system components with other MD 500® Series helicopters. The small diameter of the main rotor also gives the MD 600N® the ability to land safely in confined areas.
Power from the 808 shp Rolls-Royce 250-C47M turboshaft engine is transmitted through the engine drive shaft to the main rotor transmission. The main rotor transmission, through a second drive shaft, drives a gearbox for the NOTAR® system fan. An overrunning clutch between the engine and the main rotor transmission permits freewheeling of the rotor system during autorotation. All drive shafts are fitted with fail-safe couplings at both ends.
The airframe consists of faired sections which provide clean aerodynamic lines. This contributes to good handling qualities, low vibration levels and high-speed flight capability. The air frame structure is designed to be energy-absorbing while maintaining rotor hub integrity. A rigid, three-dimensional truss-type structure increases crew and passenger safety by means of its roll- over structure design.
SYSTEM DESCRIPTION
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3.1. Performance Statistics.
The MD 600N® has a cruising speed of 134 knots (248 kph/154 mph). Useful internal load, at maximum gross weight, is 907 kg (2,000 lb) or a mix of internal and external useful loads up to 1179 kg (2,600 lb). Hover Out of Ground Effect (HOGE) at ISA is 1829 m (6,000 ft) and Hover In Ground Effect (HIGE) at ISA is 3383 m (11,100 ft). The rate of climb, at maximum gross weight, is 6.9 m/sec (1,350 feet per minute).
The helicopter has a maximum operating altitude of 6097 m (20,000 ft) and a temperature operating range of -40 degrees C to +52 degrees C. Slope landings of up to 10 degrees are possible, due to the articulated rotor system and landing gear design.
3.2. Airframe.
The MD 600N® fuselage is a semi-monocoque aluminum structure. The crew and passenger compartments are protected by an “A-frame” truss that also acts as an integral seat structure. The aircraft forward belly is a double-walled keel beam that supports the front landing gear struts and provides energy absorption in the event of a hard landing.
　
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