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Tuesday, February 14, 2017

✈ New Airbus A350-900 Wide-body Jet Airliner ✈

The A350-900 was scheduled to enter service in the first half of 2014. The first commercial flight was made on 15 January 2015 between Doha and Frankfurt.

One year after introduction, the Airbus A350 fleet had accumulated 3,000 cycles and around 16,000 flight hours. By the end of May 2016, the in-service fleet flew 55,200 hours over 9,400 cycles at 97.8% operational reliability on three months.

The longest operated sector was Qatar Airways' Adelaide-Doha at 13.8 h for 6,120 nautical miles (11,330 km; 7,040 mi), 45% of flights were under 3,000 nmi, 16% over 5,000 nmi and 39% in between.

The average flight was 6.8 h, the longest average was TAM Airlines with 9.6 h and the shortest was Cathay Pacific's 2.1h to build experience on the type.

Aircraft seat configuration range from 253 seats for Singapore Airlines to 348 seats with TAM, with a 30 to 46 seat business class and a 211 to 318 seat economy class, often including a premium economy.

Airbus A350-900 Wide-Body Jet Airliner Drawing Passanger Placement
Airbus A350-900 Wide-Body Jet Airliner Drawing Passanger Placement

The A350 features new composite wings with a wingspan that is common to the three proposed variants (Airbus A350-800, A350-900, A350-1000), With an area of 442 m2 (4,760 sq ft) the A350 features the largest wing of a single-deck widebody aircraft in production. This is to be surpassed by the in-development Boeing 777X which is planned to have a wing area of 466.8 m2 (5,025 sq ft).

The wingspan of 64.75 m (212.4 ft) is 4.5 m (15 ft) greater than that of the A330. This is the same span as that of the longer-range variants of the Boeing 777, which have slightly less area.The A350's wing has a 31.9° sweep angle to cruise to Mach 0.85 and have a maximum operating speed of Mach 0.89. The A350-1000 will have a wing design with about a 4% increase in surface area.

The wing tip does not have Airbus's traditional wingtip fences, but instead curves upwards over the final 4.4 metres (14 ft) in a "sabre-like" shape. A new trailing-edge high-lift system has been adopted with an advanced dropped-hinge flap (similar to that of the Airbus A380), which permits the gap between the trailing edge and the flap to be closed with the spoiler.

The Rolls-Royce Trent XWB family has two basic engines to power the three A350 variants (Airbus A350-800, A350-900, A350-1000). The baseline 370 kN (83,000 lbf) thrust version for the A350-900 will be derated to 330 kN (74,000 lbf) and 350 kN (79,000 lbf) for the A350-800, while an upgraded 432 kN (97,000 lbf) thrust version will power the A350-1000.

The higher-thrust version will have some modifications to the fan module. It will be the same diameter but will run slightly faster and have a new fan blade design. And run at increased temperatures allowed by new materials technologies from Rolls-Royce's research.

The 280 tons MTOW A350-900 is the first A350 model and typically seats 325 passengers over a 8,100 nmi (15,000 km) range. Airbus says that per seat, the Boeing 777-200ER should have a 16% heavier MWE, a 30% higher block fuel consumption and 25% higher cash operating costs than the A350-900. The −900 is designed to compete with the Boeing 777, and 787, while replacing the Airbus A340-300 and A340-500.

The A350−900R extended-range variant was proposed featuring the higher engine thrust, strengthened structure, and landing gear of the 308 tons MTOW -1000 to give a further 800 nmi (1,500 km) range. An A350−900F freighter with a 5,000 nmi (9,300 km) range and a similar payload and volume to the 91.7 t and 440 m³ MD-11F should be studied after the -1000 is done and if there is market demand.

After the Boeing 787-10 launch at the 2013 Paris Air Show, Airbus was discussing with airlines a possible -900 Regional with reduced MTOW to 250 tonnes and 2×75,000 lbf (330 kN) thrust. Etihad Airways was interested in this version optimized for routes of up to 6,800 nmi (12,600 km) and seating up to 360 passengers in a single class layout.

Philippine Airlines will replace its A340-300 with an A350-900HGW high gross weight version available from 2017 enabling non-stop Manila-New York without payload limitations in both directions, a 7,404 nmi (13,712 km) flight. The PAL version will have a 278 ton MTOW and from 2020 the -900 will be proposed with the ULR 280 ton MTOW, up from 268 tons for the original weight variant and 260 ton, 272 ton, and 275 ton certification variants, with the large fuel capacity. This will enable a 8,100 nmi range with 325 seats in business, premium, and economy classes.

Model A350-900
Cockpit crew: Two
Seating: 325 - 440 (maximum)    
Overall length: 66.8 m (219 ft)    
Wingspan: 64.75 m (212.4 ft)
Aspect ratio: 9.49
Wing area: 442 m2 (4,760 sq ft)
Wing sweep: 31.9°
Overall height: 17.05 m (55.9 ft)
Fuselage width: 5.96 m (19.6 ft)

Seat width: 18.0 in (45.7 cm) in standard 9-abreast economy 16.8 in (42.7 cm) in 10-abreast high density economy

Fuselage height: 6.09 m (20.0 ft)
Cabin width: 5.61 m (18.4 ft)

Maximum takeoff weight: 280 t (617,000 lb)
Maximum landing weight: 207 t (456,000 lb)
Maximum zero fuel weight: 195.7 t (431,000 lb)
Manufacturer's empty weight: 115.7 t (255,100 lb)
Operating empty weight: 134.7–145.1 t (297,000–320,000 lb)

Cargo capacity, maximum: 36 LD3 or 11 pallets
Cruise speed, typical: Mach 0.85 (488 kn)
Cruise speed, maximum: Mach 0.89 (513 kn)

Range, maximum:
(with passengers and baggage)
15,000 km (8,100 nmi)
16,120 km (8,700 nmi) (-900ULR)
20,000 km (10,800 nmi) (ACJ350)

Take off run, SL ISA: 2,200 m (7,200 ft)
Landing distance at SL, ISA: 1,966 m (6,450 ft)

Maximum fuel capacity:
140,795 l (37,200 US gal)
165,000 l (43,600 US gal) (-900ULR)

Service ceiling: 43,100 ft (13,100 m)
Engines (2×): RR Trent XWB
Maximum thrust capability: 374.5 kN (84,200 lbf)

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