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MD902_Tech_Desc
MD902_Tech_Desc
The document provides a technical overview of the MD 902 Explorer helicopter, focusing on its design, equipment, and performance. It is intended for evaluation purposes and highlights the helicopter's versatility for various missions, including passenger transport and emergency services. Key features include a large cabin, integrated safety features, and a NOTAR® anti-torque system for enhanced safety and noise reduction.
The MD 902 Explorer is a twin-engine helicopter with a cruising speed of 131 knots and a maximum operating altitude of 14,000 feet. It features a composite fuselage, energy-attenuating landing gear, and a dual-redundant hydraulic system. The helicopter is certified for single-pilot operation under visual and instrument flight rules and is approved in over 50 countries.
The helicopter incorporates several safety features, including the NOTAR® system, crash-resistant fuel cells, dual redundant engines, and an integrated monitoring and display system for critical systems.
The MD 902 is designed to operate in a wide range of environmental conditions, with a temperature range of -40 to +52C, offering high dependability and availability.
The document emphasizes the importance of regular maintenance and servicing to ensure optimal performance and safety.
MD Helicopters provides comprehensive product support, including pilot and maintenance training, warranty services, and access to service centers worldwide.
- Supportability: Designed for ease of maintenance with modular systems and low operating costs.
- Human Systems Integration: Offers ergonomic controls and soundproofing for reduced noise.
- Engine: Equipped with dual redundant turboshaft engines for reliability and safety.
- Environmental Impact: Certified for low noise emissions.
- FAA type-certified under CFR Title 14, Part 27 for VFR day and night operations since December 1994, with JAA validation in July 1996.
- Approved for use in over 50 countries worldwide.
- External Dimensions: Fuselage length is 18.25 ft, main rotor diameter is 33.83 ft.
- Interior Dimensions: Crew compartment width is 4.30 ft, passenger compartment length is 6.30 ft.
- Weight: Nominal empty weight is 3,375 pounds, with an operational weight limit up to 6,770 pounds.
- The MD 902 can be configured for various roles including EMS, search and rescue, utility, and VIP transport.
- The MD 902 is an eight-place, twin-engine helicopter with an aluminum frame and composite outer structure, certified for single-pilot operation under VFR and capable of IFR operations.
The MD 902 Explorer features a fully-articulated rotor system and the patented NOTAR® anti-torque system. It is designed for both VFR and IFR operations, with optional equipment available for enhanced capabilities.
- Rotor and Transmission: The main rotor is supported by a hollow static mast, reducing noise.
- Construction: The aircraft's outer skin is composite, providing strength and protection.
- Hydraulic System: A dual-redundant system ensures reliability.
- Display System: The Integrated Instrument Display System (IIDS) provides comprehensive monitoring.
- Seating and Safety: Energy-attenuating seats meet safety requirements.
- Airframe: Includes sliding cabin doors and anti-collision lights.
- Interior: Features energy-attenuating crew seats and soundproofing.
- Engine: Equipped with twin FADEC Pratt & Whitney-Canada Model 207E engines.
- Monitoring: Includes airspeed indicator and integrated instrument display system.
- Airframe: Options include dual heated pitot tubes and cargo hooks.
- Interior: Options for VIP, business, or EMS interior systems.
- Monitoring: Optional weather radar and GPS/NAV/COM systems.
The main fuselage is a semi-monocoque composite structure with embedded aluminum mesh for protection.
The exterior can be customized with one to three colors. External lighting includes anti-collision strobe lights and landing light.
The cockpit area includes energy-attenuating seats and comprehensive instrumentation, while the cabin offers flexible seating and utility options.
The cockpit is designed for side-by-side seating of the pilot and copilot, with ergonomic controls and energy-attenuating seats.
The cabin offers a volume of 173 cubic feet, with six foldable, energy-absorbing seats and various interior configurations available.
The baggage compartment offers 52 cubic feet of space and can be optionally equipped with carpeting and lighting.
The fuel system features a crash-resistant elastomeric fuel cell with a capacity of 159 U.S. gallons.
The helicopter is powered by two Pratt & Whitney-Canada Model 207E turboshaft engines, each capable of producing 550 shp takeoff power.
Engine control is managed by FADEC, with manual backup available.
The drive system includes a main rotor static mast, driveshaft, and transmission.
The drive system includes a chip detector, overrunning clutch, and flexible diaphragm couplings.
The main rotor is a five-blade, fully-articulated hinge-less flex beam system.
The system integrates cyclic, collective, and anti-torque controls with hydraulic boost.
The dual-redundant hydraulic system supplies pressurized fluid to flight control actuators.
The system detects high temperatures and provides cockpit warnings.
The electrical system operates on 24-28 Vdc power, with power generation from engine-powered starter/generators.
The electrical system ensures separation of power generating systems, with wiring physically separated to prevent single-point failures.
Comprises a heat/defog system, fresh air vent system, and air conditioning system.
The IIDS is a central digital and analog display system for monitoring aircraft systems.
The EFIS integrates multiple flight instruments and provides expanded situational awareness.
The MD 902 has a standard empty weight of 3,373 pounds and a maximum takeoff weight of 6,500 pounds.
The MD 902 meets FAA and ICAO noise requirements, offering significant noise reduction.
The MD 902 includes safety features like a large cabin with emergency egress windows and energy-absorbing seats.
The MD 902 helicopter is designed with advanced safety features to ensure occupant safety during impacts.
The MD 902 is designed to accommodate a wide range of crew members with adjustable controls and seats.
The MD 902 is engineered for ease of maintenance and low-cost operation.
The document provides detailed tables listing life-limited parts and inspection intervals.
The MD 902 has demonstrated high operational availability and is designed for a 30-year useful life.
The document includes a table of fluid capacities and specifications for various components.
For operations above 32°F, use distilled water; for operations at or below 32°F, use a 50% mixture of isopropyl alcohol and distilled water.
The MD 902 Explorer has the lowest operating cost among similar aircraft, with a total direct operating cost per hour of $951.30.
MD Helicopters, Inc. offers comprehensive support including training, warranty, and field services.
MDHI provides pilot and maintenance training, conducted in English.
The MD 902 helicopters are covered by a commercial warranty managed by MDHI.
MD Helicopters, Inc. has approved service centers worldwide and dedicated field service representatives available in various regions.
Catalog excerpts
TECHNICAL DESCRIPTION MD Helicopters, Inc. Sales and Marketing 4555 E. McDowell Rd. Mesa, AZ 85215 PH: 480.346.6474 FAX: 480.346.6339 www.mdhelicopters.com [email protected] MISSION PROVEN, CHALLENGE READY
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TECHNICAL DESCRIPTION MD 902 EXPLORER MD Helicopters, Inc. 4555 E. McDowell Rd Mesa, Arizona CAGE: 1KVX4 DUNS: 054313767 www.mdhelicopters.com This Technical Description includes information and intellectual property that is the property of MD Helicopters, Inc. (MDHI). It provides general information for evaluation of the design, equipment, and performance of the MD 902 helicopter. The information presented in this Technical Description does not constitute an offer and is subject to change without notice. This proprietary information, in its entirety, shall not be duplicated, used, or disclosed—directly...
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MD 902 Explorer Technical Description Use or disclosure of data in this Technical Description is subject to the restriction on the cover page of this document. ATTACHMENTS: None Date Pages and/or Paragraphs Affected 14-Feb-14 All (Initial Issue)
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MD 902 Explorer Technical Description USE OR DISCLOSURE OF DATA IN THIS TECHNICAL DESCRIPTION IS S
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MD 902 Explorer Technical Description 5.9.8 USE OR DISCLOSURE OF DATA IN THIS TECHNICAL DESCRIPTION IS SUBJECT TO THE REST
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MD 902 Explorer Technical Description 1. FOREWORD This document presents basic technical description of the eight-place MD 902 Explorer helicopter built in Mesa, Arizona, USA. It is designed to provide high-level technical information of the helicopter, advantages/features, and configurations. For more detailed information an MD 902 Product Specification is available by contacting one of the Sales Team Members listed below. Ideally suited for multi-mission capabilities ranging from VVIP/passenger transport, emergency medical services, to utility missions, the MD 902 has a large cabin with sliding...
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MD 902 Explorer Technical Description THIS PAGE INTENTIONALLY LEFT BLANK USE OR DISCLOSURE OF DATA IN THIS TECHNICAL DESCRIPTION IS SUBJECT TO THE RESTRICTION ON THE COVER PAGE MDHI PROPRIETARY
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MD 902 Explorer Technical Description 2. KEY ADVANTAGES / FEATURES Using inputs from an international turbine-engine helicopter owners and operators advisory group, MD Helicopters designed and developed the MD 902 Explorer (see Fold-Out page) to be a new performance standard for a multi-purpose twin-engine helicopter. The MD 902 is a twin turbine engine, rotary-wing aircraft. It has a cruising speed of 131 knots (246 kph / 152 mph), with a useful internal load at 6,500 pound maximum gross weight is 3,125 pounds (1,417 kg). Hover out of ground effect is 8,780 feet (2,676 m) and hover in ground...
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MD 902 Explorer Technical Description THE MD 902 EXPLORER ADVANTAGES / FEATURES Integrated Safety Features No tail rotor (NOTAR®) anti-torque system eliminates the spinning tail rotor, tail rotor gearbox, and tail rotor drive shaft Designed for operator ease High-strength composite airframe with Aframe structure designed to absorb energy in an emergency landing by yielding progressively Crew and passenger seats are energyattenuating and meet Federal Aviation Regulation (FAR)/Joint Aviation Regulation (JAR) 27.562 emergency landing dynamic requirements; 30g vertical and 18.4 g forward...
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MD 902 Explorer Technical Description THE MD 902 EXPLORER ADVANTAGES / FEATURES Supportability Features Designed for ease of maintenance and supportability Modular system design Designed for reparability Low direct operating costs Maximum use of line replaceable units: o Engines o Avionics/communication o Flight controls o Main rotor blades o Main rotor drive shaft o Main rotor transmission o Main rotor transmission drive shaft o NOTAR® fan o Main rotor mast o Landing gear o Canopies o Doors o Door handles o Door windows o Seats o Seat restraints o Tail boom o Oil-cooler/blowers o Empennage...
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MD 902 Explorer Technical Description THE MD 902 EXPLORER ADVANTAGES / FEATURES crewmembers Cockpit designed to accommodate 25th to 95th percentile male/female flight crew Ergonomic designed cyclic and collective controls Engine Dual redundant turboshaft engines allow for one engine inoperative operation Engine hydro-mechanical backup in the event of FADEC failure Externally accessible water wash system Monitoring Instrumentation Integrated instrument display system Environmental Impact Certified to Part 36, Appendix H; Noise Lowest noise profile of light twin-engine class helicopters...
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MD 902 Explorer Technical Description 64 Battery access door Battery Windshield defog air duct Windshield canopy Magnetic compass Glareshield Instrument panel Torque (yaw) control pedals Avionics access Copilot entry step Landing gear mount Collective control Copilot door Energy-attenuating seat Copilot seat Five-point restraint Cyclic control Center console Circuit breaker panel Pilot seat Headset stowage Cockpit air duct Control rod linkages Instrument light Main rotor blade abrasion strip Composite blade spar Foam-filled trailing edge Composite skin panel Composite fairing Composite rotor...
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MD 902 Explorer Technical Description 3. CERTIFICATION The MDHI MD 902 is a commercial aircraft FAA type-certified under Code of Federal Regulations (CFR) Title 14, Part 27, visual flight rules (VFR) day and night occurred in December 1994. Joint Aviation Authorities (JAA) validation, which led directly to Joint Aviation Regulation (JAR) Part 27 Type Certification in all 27 member countries, was awarded in July 1996. Category A certification, which incorporates 45 additional Part 29 design and performance regulations, supports deliveries of a JAR-OPS 3 performance Class 1 aircraft. The MD 902...
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MD 902 Explorer Technical Description If one engine fails during landing approach prior to the landing decision point, the MD 902 can climb out and achieve an airspeed that allows continued flight (balked landing) If one engine fails during landing after the landing decision point, the MD 902 can land and stop safely. Maximum altitude for MD 902 Category A operations is 10,000 feet density altitude. Category A operation at clear airfields, heliports, and elevated helipads are limited with winds from the side and aft of the aircraft (60 degrees from rotor center, forward). Heliport and elevated...
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