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Sukhoi may deliver Superjet performance mods early
Sukhoi is pressing ahead with modifications to improve its
Superjet SSJ100 and may certificate some or all the modifications earlier than the late-2018 timeframe to which it has committed.
The drive for an earlier date has been spurred by by
Ireland-based CityJet, which has a major hub at London City Airport and has ordered the Russian jet.
The combination of London City’s short runway and the presence of several high buildings in the nearby Docklands financial area mean that aircraft landing from the west have to adopt an approach of 5.5 degrees, almost double the standard 3 degree glideslope.
With that in mind, Sukhoi is developing a modification pack consisting of a new flap setting (‘flap setting three’), modifications to the braking system software and winglets.
Winglets had been considered previously, said Nazario Cauceglia, CEO of SuperJet International, the Italy-based marketing arm for the aircraft, but the order from CityJet, for which London City is a major part of its network, prompted the company to move ahead with the project.
The modification pack will reduce landing speeds “by two to three knots, perhaps a little more,” while the winglets will bring fuel consumption benefits.
“The development of the winglets was done in Moscow,” Cauceglia said at the Farnborough Airshow. “They have selected a winglet configuration and they are now going to do structural tests.” A Russian supplier is likely to be chosen to manufacture them.
CityJet ordered 15 leased SSJ100s, with 10 more on option. “The contract says they will be delivered in two batches,” Cauceglia said. “The first batch of eight will be delivered by the middle of next year. They have two already, with a third arriving in October and five in the first half of 2017.”
The second batch will not start to arrive until the latter part of 2018, “as this will include all the modifications certificated and required to operate into London City.” However, although Sukhoi has committed to delivering the certificated modifications by late 2018, “We’re trying to get certification for at least some of the mods before 2018. London City is very important for our customer, so we’re trying to reduce this [time] as much as possible.”
He anticipates that other potential customers will be interested in adopting the mods package.
http://atwonline.com/components/sukhoi-may-deliver-superjet-performance-mods-early-0
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