首批空客A350-1000機翼已在北威爾士的布勞頓(Broughton)開始組裝。A350-1000的機翼翼展與已投入運營的A350-900相同,但90%的機翼零部件經(jīng)過了改動,且機翼后緣有所延長,目的是加大機翼面積,以滿足更大載荷和更長航程的要求。
A350 XWB機翼的大部分是由碳纖維復(fù)合材料構(gòu)成的,包括其上下翼面。機翼長32米,寬6米??湛捅硎?,該機翼是民航業(yè)目前在用的最大的復(fù)合材料單體部件。
該機翼在位于布里斯托(Bristol)附近費爾頓(Filton)的空客工廠進行設(shè)計和開發(fā),工廠也負責(zé)設(shè)計和測試其他飛機系統(tǒng),包括燃油系統(tǒng)和起落架。機翼設(shè)計中包含了許多流線型特征,尤其是下垂式機翼前緣組件,以及新型自適應(yīng)下落式鉸鏈襟翼,這些設(shè)計可以提高飛機低速飛行的效率。同時,機翼也能產(chǎn)生更多升力,并自動處理表面載荷,這有助于減少飛機阻力,并降低油耗。
空客的工程師們也將空氣動力增強技術(shù)結(jié)合到了A350 XWB機翼中。這一技術(shù)已在A380機翼上得到了驗證。為了提升飛機高速飛行效率,A350 XWB可以對襟翼的傾斜角度進行了不同的設(shè)置,以優(yōu)化機翼構(gòu)型,并更好的控制機翼載荷。機載計算機系統(tǒng)將對機翼的移動曲面進行智能控制,從而使機翼做出相應(yīng)的反應(yīng),目的是為了讓空氣動力效率在不同的飛行階段都實現(xiàn)最大化。實際上,飛行員將不僅能在飛機起飛和降落階段使用襟翼,在巡航階段也可以使用,以降低機翼阻力。
作者:Jean L. Broge
來源:SAE 《航空工程雜志》
翻譯:SAE 上海辦公室
First Airbus A350-1000 wing goes into production in North Wales
Airbus has begun the assembly process on the wings for the first Airbus A350-1000 in Broughton, North Wales. The A350-1000 wing has the same span of the A350-900 that is already in service, but 90% of the parts have been modified and the trailing edge has been extended to resize the wing for the additional payload and range.
Most of the A350 XWB's wing is comprised of carbon-fiber composites, including its upper and lower covers. At 32 x 6 m, Airbus says the wing is the largest single part made from composites in use in civil aviation today.
The wings were designed and developed at Airbus’ facility in Filton, near Bristol, where a number of other systems are designed and tested including fuel systems and landing gear. The wing design includes several streamlined features, in particular droop-nose leading edge devices and new adaptive dropped-hinge flaps, which increase the jetliner’s efficiency at low speeds. Also, the wings are capable of producing more lift and automatically handle loads across their surface—helping to reduce the aircraft's drag and fuel burn.
On the A350 XWB wing, Airbus engineers combined aerodynamic enhancements already validated on the A380 with further improvements. To improve efficiency at higher speeds, the A350 XWB can deflect its wing flaps differentially, optimizing the wing profile and providing better load control. By intelligently controlling the wing’s moving surfaces using onboard computer systems, the wing will adapt while airborne—tailoring it for maximum aerodynamic efficiency in the various phases of flight. In essence, pilots will be able to use the flaps not only for takeoff and landing, but also while cruising to reduce wing drag.
Author: Jean L. Broge
Source: SAE Aerospace Engineering Magazine