Wednesday, March 24, 2010

Mi 17 Helicopter

The Mi-17 retains the codename 'Hip-H', denoting its derivation from the Mi-8 design. First identified in 1980-81, the Mi-17 is virtually a revision of the Mi-8 design using a combination of the 'Hip' airframe but with the port-side tail rotor, and fitted with the more powerful powerplants of the Mi-14. These result in an overall improvement in performance, particularly the hovering ceiling. The type remains in current production for both civil and military use as a cargo-carrying helicopter, with secondary capability as a passenger transport capable of carrying up to 24 passengers, or 12 stretcher cases when used as an ambulace. The first export examples were delivered to Cuba in 1983, and Mi-17s are now in service in Angola, Hungary, India, North Korea, Nicaragua, Papua New Guinea, Peru and Poland, as well as the CIS.
CUSTOMERS: More than 810 exported by Aviaexport.
DESIGN FEATURES: Distinguished from basic Mi-8 by port-side tail rotor; shorter engine nacelles, with air intakes extending forward only to mid-point of door on port side at front of cabin; small orifice each side forward of jetpipe; correct rotor speed maintained automatically by system that also synchronises output of the two engines. For operation in 'hot and high' conditions, Kazan commercial versions can be supplied with TV3-117MT engines and tail rotor with wider-chord blades.
POWER PLANT: (basic Mi-17): Two 1,434kW (1,923 shp) Klimov TV3-117MT turboshafts; should one engine stop, output of the other increases automatically to contingency rating of 1,637kW (2,195 shp), enabling flight to continue; APU for pneumatic engine starting; deflectors on engine air intakes prevent ingestion of sand, dust and foreign objects. Fuel as Mi-8T.
ACCOMMODATION: Configuration and payloads generally as Mi-8 but six additional centreline seats optional. Military Mi-17-1V carries up to 30 troops or 20 wounded troops in ambulance configuration. Civilian Mi-17 promoted as essentially a cargo-carrying helicopter, with secondary passenger transport role.
SYSTEMS: (Mi-17V/171): AI-9V APU for pneumatic engine starting; AC electrical supply from two 40kW three-phase 115/220V 400Hz GT40/P-48V generators.
AVIONICS: (Mi-17V/171): Comms: Baklan-20 and Yadro-1G1 com radio. Radar: Type 8A-813 weather radar.
Flight: Type A-723 long-range nav.

Instrumentation: ARK-15M radio compass, ARK-UD radio compass, DISS-32-90 Doppler; AGK-77 and AGR-74V automatic horizons; BKK-18 attitude monitor; ZPU-24 course selector; A-037 radio altimeter.

Self-defence (optional): ASO-2 chaff/flare dispenser under tailboom and IR jammer (NATO 'Hot Brick') at forward end of tailboom.

EQUIPMENT: Options as for Mi-8, plus, on military versions, external cockpit armour; engine nozzle IR suppressors and a VMR-2 fit for air-dropping.

ARMAMENT: Options as for Mi-8, plus 23mm GSh-23 gun packs. AAMs and newer ASMs on Mi-8AMTSh.

Jane's Helicopter Markets and Systems
Technical data for Mi-17

Engine: 2 x Klimov TV3-117MT turboshaft, rated at 1400kW, main rotor diameter: 21.29m, length: 25.35m, height: 4.76m, take-off weight: 13000kg, max speed: 250km/h, cruising speed: 240km/h, service ceiling: 5000m, hovering ceiling, OGE: 1760m, range: 465km, payload: 3000-5000kg


No comments:

Post a Comment