As currently proposed, the SSJ 100 family will comprise two different sizes of aircraft offered with two performance options - "basic" and "LR" (long range).
The 95- to 98-seat SSJ 100-95 is the lead variant in the development programme, and this is the size expected to prevail, so will be the major production version, says SCAC president Victor Subbotin.
The basic 95-seater is offered with a maximum take-off weight (MTOW) of 42,500kg (93,600lb) and an engine thrust of 15,650lb (70kN), offering a range with 98 passengers of 2,950km (1,600nm). The LR version has the same engine thrust, but a 3,400kg increase in MTOW, boosting range to 4,420km.
Although the 75- to 78-seat SSJ 100-75 is on the agenda, Subbotin says the only commitments for this variant are "soft" orders. "We plan to build the 75-seater once the 95-seater is finalised."
The SSJ 100-75 is 3.5m (11.5ft) shorter than the baseline 95-seater, but incorporates an identical wing, while the MTOW on the basic version is reduced to 38,800kg and engine thrust is derated by around 10%. The LR model has the same thrust rating as the 95-seater, and MTOW increased to 42,300kg.
"For the flight-test programme we will build one SSJ 100-75 and one SSJ 100-75LR, but the flight-test effort will be reduced as it can be validated from the 95-seater test programme," says Subbotin.
Further down the road, SCAC is considering the development of a stretched 110-seat version, but a final decision on such a move "will depend on the market" says Subbotin. "The engine and airframe is capable of being stretched to 110-120 seats - the latter would offer lower range and incorporate a high-density seating arrangement with reduced pitch."
SSJ 100-110 studies envisage an aircraft with the strengthened structure and higher weights of the SSJ 100-95LR stretched by around 3m with 1.5m plugs either side of wing. "If we started development now it could be in service in 2010, but 2012 is a more realistic target," says Subbotin.
|Superjet 100 family specification||SSJ100-75||SSJ100-75LR||SSJ100-95||SSJ100-95LR||SSJ100-110*|
|Wing area (m2)||10.3||10.3||10.3||10.3||10.3|
|Internal cabin width (m)||3.24||3.24||3.24||3.24||3.24|
|Maximum take-off weight (kg)||38,800||42,300||42,500||45,900||45,900|
|Maximum landing weight (kg)||35,000||35,000||39,400||39,400||39,400|
|Maximum payload (kg)||9,130||9,130||12,250||12,250||n/a|
|Engine take-off thrust (lb)||13,750||15,650||15,650||15,650||15,650|
|Long range cruise speed (Mach)||0.78||0.78||0.78||0.78||0.78|
|Required runway length (MTOW/ISA/SL)||1,520||1,520||1,530||1,530||n/a|
|Accommodation (one-class 32in pitch)||78||78||98||98||110|
|Design range (km) at MTOW/full pax||2,900||4,550||2,950||4,420||n/a|
|Notes: *proposed variant - data provisional Source: Sukhoi Civil Aircraft|
Source: Flight International