YAKOVLEV MS-21

TYPE: Regional jet airliner.

PROGRAMME: Originated in Yak-242, which proposed as successor to Yak-42 and included in State Programme for Aviation, with maiden flight scheduled for 1998. Project lapsed, but revived in 2003 when re-launched as MS-21 (Magistral'nyi Samolet 21 Veka: airliner of the 21st Century), with design inputs from Ilyushin, having gained official support against Il-214 and Irkut 111 in competition decided on 21 July and formally announced 18 August 2003. Also envisaged as Tu-154M replacement. Irkut to join programme as risk-sharing partner. First flight two years from go-ahead and service entry three years thereafter. Production will be by Aviastar.

CURRENT VERSIONS: MS-21-100: With 132 seats in three classes (12+24+96).
MS-21-200: With 156 seats in two classes.
MS-21-300: With 174 seats in single class.

COSTS: Development estimated as US$460 million (2003), including US$200 million from Russia government.

DESIGN FEATURES: Low-wing airliner with two podded engines underwing. Intended 70 per cent engine, systems and avionics commonality with Ilyushin/Irkut/HAL Il-214.
Supercritical wing section designed in collaboration with TsAGI; leading-edge sweepback 25°; winglets.

FLYING CONTROLS: Digial fly-by-wire controls. Double-slotted flaps.

LANDING GEAR: Tricycle type; hydraulically retractable. Four-wheel main bogies; tyre size 950x300; pressure 7.85 bar (114 lb/sq in). Twin nosewheel, size 660x200, pressure 8.82 bar (128 lb/sq in).

POWER PLANT: Two 118 kN (26,450 lb st) Aviadvigatel PS-12 turbofans (derated PS-90A).

ACCOMMODATION: Two flight deck crew. Seating for 130 to 170 passenger.

All data are provisional.

DIMENSIONS, EXTERNAL:

  • Wing span: 36.25 m (118 ft 11¼ in)
  • Wing aspect ratio: 11
  • Length overall: 38.00 m (124 ft 8 in)
  • Max diameter of fuselage: 4.10 m (13 ft 5½ in)

AREAS:

  • Wings, gross: 120.0 m² (1,291.7 sq ft)

WEIGHTS AND LOADINGS:

  • Operating weight empty, equipped: 38,400 kg (84,655 lb)
  • Max payload: 18,000 kg (39,680 lb)
  • Max fuel weight: 22,000 kg (48,500 lb)
  • Max T-O weight: 100: 65,800 kg (145,065 lb)
    • 200: 71,100 kg (156,750 lb)
    • 300: 72,000 kg (158,735 lb)

PERFORMANCE:

  • Cruising speed: 459 kt (850 km/h; 528 mph)
  • Range: 100: 2,537 n miles (4,700 km; 2,920 miles)
    • 200: 2,969 n miles (5,500 km; 3,417 miles)
    • 300: 2,429 n miles (4,500 km; 2,796 miles)

The article appears in the following publication:
Jane's All the World's Aircraft 2004-2005. Jane's Information Group Ltd. 2004. ISBN: 0-7106-2614-2

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