Pas étonnant qu'Airbus ai recherché sa solution !
Noté quand même ... les augmntations de poids trés raisonnables, côté Wingtips de AP et une capa d'emport de presque 2 Tonnes en plus !
-------------- FlightGlobal, John Croft, un extrait (Vu par poncho) ----------
At the latest production rate of 35 737s per month from the company's Renton, Washington factory, Boeing will deliver approximately 420 Boeing 737-700/700C/800/900ER and Boeing Business Jet (BBJ) models this year with APB blended winglets installed from the factory. Boeing reported that it delivered 99 Boeing 737s in the first quarter, including one P8-A Poseidon for the US Air Force, a version that has raked wing extensions rather than APB winglets.
APB supplies the winglets and associated gear to Boeing for installation during the build process, eliminating anywhere from 420-1,900 labour hours in aircraft downtime, depending on aircraft model, to install a set of winglets in the aftermarket.
For the 737, each pair of winglets is priced at $1 million, not including installation. LaMoria says return on investment usually occurs in less than two years based on fuel savings alone.
Although the winglets increase the operational empty weight of the 737 between 100-236kg (220-520lb), depending on the model, the associated benefits include an increased range of 130nm (241km) or payload increase from 1,996-2,303kg.
In the existing fleet, the company says it has identified retrofit opportunities for 390 Boeing 737s, 350 Boeing 757s and about 400 767s. LaMoria notes that the number of 767s that could be equipped continues to increase since Boeing continues low-rate production on the model and does not offer 767 winglet installation at the factory.