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Initial Operational Capability (IOC):
Also Known As: MD-900 and MD-902
Origin: United States of America
Parent System: MD Explorer
Initial Operational Capability (IOC): 1994
Total Production: ?
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Description: MD Explorer is a light, twin-turbine engine, high performance, multi-purpose helicopter fitted with NOTAR anti-torque control system. It is suitable for Airborne Medical Service (AMS), law enforcement and corporate transport. Its cabin results quiet and comfortable and can accommodate as many as eight persons. Overall, MD Explorer features enhanced safety and maintainability. Its composite airframe is resistant to corrosion in a marine environment.
MD Explorer is powered by two Pratt & Whitney Canada PW207E turboshaft engines rated at 625-shp each which drives a five-bladed main rotor. The NOTAR system replacing the tail rotor consists of an enclosed variable-pitch fan driven by the main transmission. A circulation control tailboom which ends at a direct jet thruster coupled with tail vertical stabilizers match the tail rotor effect allowing the directional flight of the aircraft while balancing the main rotor's torque effect. In addition, NOTAR results safer than tail rotor which is the cause for many helicopter crashes.
In August 2005 Lockheed Martin and MD Helicopters joined forces to compete for the US Army's Light Utility Helicopter (LUH) program. Their proposal was based on the MD Explorer fitted with NOTAR system. Up to 322 LUH helicopters were needed by the US Army between 2006 and 2015.
MD Explorer Specifications
Main Rotor Blades: 5
Number of Engines: 2
Height: 3.66 meter (144 inch)
Length: 11.8 meter (466 inch)
Main Rotor Diameter: 10.3 meter (407 inch)
Width: 2.23 meter (88 inch)
Ceiling: 6,096 meter (20,000 foot)
Max Range: 543 kilometer (293 nautical mile)
Max Power at TakeOff: 1,250 shp (933 kW)
Cruise Speed: 69 mps (248 kph)
Top Speed at High Altitude: 72 mps (140 KTAS)
Flight Endurance: 3.40 hour (204 minute)
Empty Weight: 1,463 kilogram (3,225 pound)
Max Takeoff Weight: 3,130 kilogram (6,900 pound)
Payload: 1,599 kilogram (3,525 pound)
CEP: Circular Error Probable
Meters (m) Kilometers (km) Nautic Miles (nm) Inch (in) Yard (yd) Foot (ft) Millimeter (mm)
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Meters per Second (mps) Kilometers per Hour (kph) Knot (kt) Miles per Hour (mph)
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