The aircraft design process is a loosely defined method used to balance many competing and demanding requirements to produce an aircraft that is strong, lightweight, economical and can carry an adequate payload while being sufficiently reliable to safely fly for the design life of the aircraft. Similar to, but more exacting than, the usual engineering design process , the technique is highly iterative, involving high-level configuration tradeoffs, a mixture of analysis and testing and the detailed examination of the adequacy of every part of the structure. For some types of aircraft, the design process is regulated by civil airworthiness authorities .
84-599: The Airbus A330neo ("neo" for " New Engine Option ") is a wide-body airliner developed by Airbus from the original Airbus A330 (now A330 ceo – "Current Engine Option"). A new version with modern engines comparable with those developed for the Boeing 787 was called for by operators of the A330ceo. It was launched on 14 July 2014 at the Farnborough Airshow , promising 14% better fuel economy per seat . It
168-639: A freighter version, stretching the A330-900 to carry more cargo over a shorter range, but retired passenger 767 and A330 aircraft provide a lot of conversion potential. Development costs for the proposed freighter would be lower than for a new program, as much of the engineering has already been done for the A330-200F. Airbus formally launched the tanker variant of the A330neo, dubbed as the A330 MRTT+, at
252-677: A type certificate for a new design of aircraft. These requirements are published by major national airworthiness authorities including the US Federal Aviation Administration and the European Aviation Safety Agency . Airports may also impose limits on aircraft, for instance, the maximum wingspan allowed for a conventional aircraft is 80 metres (260 ft) to prevent collisions between aircraft while taxiing. Budget limitations, market requirements and competition set constraints on
336-646: A -800 and US$ 296.4 M for a -900. The A330-900 first flight on 19 October 2017 was a debut of the 1,400 hours flight test campaign involving three prototypes plus the first production aircraft: 1,100 flight hours for the A330-900 and 300 flight hours for the A330-800, targeting mid-2018 EASA and FAA Type Certification. The 4h 15m flight reached 30,125 ft (9,182 m) and 502 kn (930 km/h). It should establish certain maximum operating points and achieve an initial handling qualities assessment including at high angle of attack . This first aircraft, MSN1795,
420-513: A distinctive cockpit windscreen to be featured on the A330neo, similar to that on the A350 , and promised a new interior concept offering a better passenger experience on the A330neo. Candidate engines included variants of Rolls-Royce's Trent 1000 and General Electric's GEnx-1B . Both engine makers were reportedly interested in winning an exclusive deal should a re-engined A330 be offered. The Trent 1000 TEN (Thrust, Efficiency, New Technology) engine
504-458: A few changes to the landing gear and brakes, increasing its range by 700 or 1,000 nmi (1,300 or 1,900 km; 810 or 1,150 mi) compared to the current A330neo or A330ceo. The 251 t MTOW was confirmed by Airbus in November 2017. This gave the -900 a range of 7,200 nmi (13,300 km; 8,300 mi) and 8,150 nmi (15,090 km; 9,380 mi) for the -800. Test flights of
588-435: A large number of light aircraft are designed and built by amateur hobbyists and enthusiasts . In the early years of aircraft design, designers generally used analytical theory to do the various engineering calculations that go into the design process along with a lot of experimentation. These calculations were labour-intensive and time-consuming. In the 1940s, several engineers started looking for ways to automate and simplify
672-410: A maximum take-off weight of 242 t. The type design was frozen in late 2015. Boeing Vice Chairman and Commercial Airplanes CEO Ray Conner dismissed the A330neo as 2004 revamp which cannot match the 787's direct operating costs , being 20,000 lb (9.1 t) heavier and having a wing only slightly improved from the 1980s design, and claimed the 787-10 was almost 30% more efficient per-seat than
756-496: A passenger or cargo payload, long range and greater fuel efficiency whereas fighter jets are designed to perform high speed maneuvers and provide close support to ground troops. Some aircraft have specific missions, for instance, amphibious airplanes have a unique design that allows them to operate from both land and water, some fighters, like the Harrier jump jet , have VTOL (vertical take-off and landing) ability, helicopters have
840-510: A target for high-density nine-abreast layouts for 386 seats over 6,000–6,500 nmi (11,100–12,000 km; 6,900–7,500 mi) at the 251 t (553,000 lb) MTOW, 500 nmi (930 km; 580 mi) more than a similarly loaded 787-8 and with up to 30 more seats. Production of the -800 beyond the prototype was in doubt, as Hawaiian was choosing between the Airbus A350-900 and the Boeing 787 -8/9. In February 2018, Hawaiian
924-574: A total of 252) with an optimised cabin featuring 18-inch-wide economy seats. The -800 should have a range of 7500 nmi (13,900 km; 8,600 mi) with 257 passengers (406 max). As the variants share 99% commonality , developing the smaller -800 has a negligible extra cost. After the first flight of the -900 on 19 October 2017, Hawaiian Airlines (then the only customer for the -800) considered changing its order to six -800s, seeking best to fit its current network to Asia and North America whilst allowing for future growth, possibly to Europe. Demand for
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#17327800212991008-451: Is called design optimization. Fundamental aspects such as fuselage shape, wing configuration and location, engine size and type are all determined at this stage. Constraints to design like those mentioned above are all taken into account at this stage as well. The final product is a conceptual layout of the aircraft configuration on paper or computer screen, to be reviewed by engineers and other designers. The design configuration arrived at in
1092-509: Is derived from various factors such as empty weight, payload, useful load, etc. The various weights are used to then calculate the center of mass of the entire aircraft. The center of mass must fit within the established limits set by the manufacturer. The aircraft structure focuses not only on strength, aeroelasticity , durability , damage tolerance , stability , but also on fail-safety , corrosion resistance, maintainability and ease of manufacturing. The structure must be able to withstand
1176-591: Is exclusively powered by the Rolls-Royce Trent 7000 which has double the bypass ratio of its predecessor . Its two versions are based on the A330-200 and -300: the -800 has a range of 8,150 nmi (15,090 km; 9,380 mi) with 257 passengers while the -900 covers 7,200 nmi (13,330 km; 8,290 mi) with 287 passengers. The -900 made its maiden flight on 19 October 2017 and received its EASA type certificate on 26 September 2018; it
1260-502: Is the exclusive powerplant, as Rolls-Royce offered better terms to obtain exclusivity. Customers bemoan the loss of competition among engine makers: Steven Udvar-Hazy , CEO of Air Lease Corporation , said that he wants a choice of engines, but Airbus has pointed out that equipping a commercial aircraft to handle more than one type of engine adds several hundred million dollars to the development cost. The head of Pratt and Whitney said: "Engines are no longer commodities...the optimization of
1344-404: Is the first slat 's dog-tooth. The wing twist and belly fairings are tweaked to approach the lowest drag elliptical span-wise pressure distribution changed by the larger sharklets, like the flap track fairings shape to lower form drag . Initially based on the largest 242t MTOW A330, Airbus is studying an improvement to 245 t (540,000 lb) MTOW for the A330neo, which would match
1428-407: The 737-9 are smaller and had less range, and that launching the A330neo would probably kill the smallest A350-800. John Leahy estimated that the A330-900 would have operating costs on par with the 787-9 , but would be available at 25% lower capital costs and could reach a production rate of 10 per month after a 7/8 per month rate at the production start. Both A330neo variants were expected to have
1512-509: The A380 but was wary of having two major modification programs simultaneously. In March 2014, Delta Air Lines expressed an interest in the A330neo to replace its ageing, 20+-year-old Boeing 767-300ER jets. In the 250-300-seat market, CIT Group believed an A330neo enables profitability on shorter ranges where the longer-range A350 and Boeing 787 are not optimised. CIT said that the A350-800
1596-582: The Airbus Toulouse site with the joining of the wings to the centre fuselage at the station 40. In December 2016, the programme schedule slipped by six weeks due to marginal engine development at Rolls-Royce , and launch customer TAP Air Portugal projected its first A330neo would be delivered in March 2018. The first aircraft left the paint shop in December 2016, awaiting its engines. By April 2017,
1680-784: The Boeing 787 and the Lockheed Martin F-35 have proven far more costly and complex to develop than expected. More advanced and integrated design tools have been developed. Model-based systems engineering predicts potentially problematic interactions, while computational analysis and optimization allows designers to explore more options early in the process. Increasing automation in engineering and manufacturing allows faster and cheaper development. Technology advances from materials to manufacturing enable more complex design variations like multifunction parts. Once impossible to design or construct, these can now be 3D printed , but they have yet to prove their utility in applications like
1764-637: The Boeing 787 launch in 2004, Airbus' initial response was an improved A330. After negative feedback from airlines and lessors , the A350 XWB became a new design in 2006. After the A320neo launch in December 2010 and its commercial success, the largest airline of Malaysia – an all-Airbus operator – AirAsia asked Airbus to re-engine the A330. New engines like the GEnx or Rolls-Royce Trent 1000 developed for
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#17327800212991848-572: The Northrop Grumman B-21 or the re-engined A320neo and 737 MAX . Airbus and Boeing also recognize the economic limits, that the next airliner generation cannot cost more than the previous ones did. An increase in the number of aircraft also means greater carbon emissions. Environmental scientists have voiced concern over the main kinds of pollution associated with aircraft, mainly noise and emissions. Aircraft engines have been historically notorious for creating noise pollution and
1932-449: The -800 fell to 3%. In contrast, the -200 commanded 40% of the CEO deliveries: its range advantage has eroded with the increased capabilities of the -900, and although it offers lower fuel per trip, fuel per seat is higher. As of 2017, demand for the -800 was limited by low fuel prices and the -200s it might replace after 2020 were still young (nine years on average). The Boeing 767-300s that
2016-572: The -800 is longer by 4 rows or 2.5 m (130 in). Airbus could limit its MTOW to 200 t (440,000 lb) and derate its engines to 68,000 lbf (300,000 N) to optimise for the shorter routes to be targeted by the Boeing NMA, with the A321XLR tackling the lower end of the same niche. The A330-800 received EASA type certification on 13 February 2020. The first aircraft, configured with 226 seats including 23 in business class,
2100-441: The -800 might replace are 15 years older, and while Boeing considered relaunching production of the 767-300ER , mainly as an interim for American and United Airlines, this was complicated by a 30-year-old design including obsolete cabin amenities. At this time, Boeing intends to launch its New Midsize Airplane no earlier than 2027, affording Airbus opportunities with the 95 operators of the A330ceo. Long-haul low-cost carriers were
2184-521: The 100th A330neo, an A330-900, to German charter airline Condor Flugdienst GmbH , which would lease it from AerCap. At that time, the A330neo Family flew in the liveries of 22 airlines on over 200 routes and destinations worldwide. Re-engine This article deals with powered aircraft such as airplanes and helicopter designs. The design process starts with the aircraft's intended purpose. Commercial airliners are designed for carrying
2268-605: The 2024 Farnborough International Airshow . The A330 MRTT+ is based on the A330-800 and is intended to replace the A330 MRTT . The A330 MRTT+ also retains the 111,000 kg (245,000 lb) fuel capacity of the A330 MRTT. There are 144 aircraft in service with 20 operators as of October 2024. The five largest operators of A330neo are Delta Air Lines (31), TAP Air Portugal (19), Condor (17), ITA Airways (11) and Cebu Pacific (9). On 11 April 2023, Airbus delivered
2352-401: The 251 t A330-900 started from 28 February 2020. Airbus was expecting a short 30–40h test campaign, as multiple tests were conducted with the previous variant adapted to higher weight, including flight performance and noise assessment. The heavier structure allows a transpacific range and is balanced by a weight-reduction effort, keeping the same empty weight and payload. On 8 October 2020,
2436-424: The 251 t A330-900 was EASA-certified, before introduction by Corsair International . Retaining 99% spares commonality , it offers 6 t (13,000 lb) more payload while strengthening the landing-gear and extending the time before overhaul interval from 10 to 12 years. On 31 March 2021, Corsair took delivery of the first 251t Airbus A330-900 in a three-class, 352-seat configuration. The 251 t A330-800
2520-455: The 787 could offer a 12%–15% fuel burn improvement, and sharklets at least 2%. Airbus sales chief John Leahy 's argument was that the lower purchase price of an A330 even without new engines make the economics of buying an A330 competitive at midrange routes with that of the Boeing 787. An A330neo would accelerate the demise of the similarly sized A350-800 . Airbus also considered re-engining
2604-412: The A330neo the most cost-efficient medium-range wide-body airliner. Airbus said that it could pursue demand for 4,000 aircraft and that there was an open market for 2,600 jets not already addressed by backlogs with operators already using A330s. Aerodynamic modifications would include a re-twisted wing and optimised slats . In 2014, The Airline Monitor ' s Ed Greenslet stated that the A330neo would have
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2688-469: The Americas and Africa. TAP made its first commercial flight on 15 December from Lisbon to São Paulo . The airline should receive 15 more A330neos in 2019 and fly the A330-900 from Lisbon to Chicago O'Hare and Washington Dulles from June 2019, both five times a week. On the occasion of the 19 October 2017 first flight, an increase to 251 t (553,000 lb) MTOW by mid-2020 was announced, with
2772-584: The Trent 7000s were to be installed later during the summer so that the first flight was delayed until September. Due to the delay, TAP Air Portugal was not expected to receive the first A330neo until the end of the first half of 2018, or even in the third quarter. The engines were shipped to Airbus in June. The aircraft complete with engines showed at Toulouse in September before its first flight. Major structures of
2856-426: The ability to hover over an area for a period of time. The purpose may be to fit a specific requirement, e.g. as in the historical case of a British Air Ministry specification , or fill a perceived "gap in the market"; that is, a class or design of aircraft which does not yet exist, but for which there would be significant demand. Another important factor that influences the design are the requirements for obtaining
2940-516: The advantage of not being designed to fly 8,000 nmi, unlike the A350 and Boeing 787 which were thus less economical on shorter routes, although "the vast majority of long-haul markets is 4,000 nmi or less". He also believed that an "A330neo would enjoy a monopoly in its segment instantly", with the Boeing 767 "essentially out of production", the Boeing 757 not replaced while the A321neo and
3024-524: The advantage to 12%. Furthermore, fuel consumption per seat is improved by 2% due to the rearranged cabin (Space-Flex and Smart-Lav) with increased seating, offering a 14% fuel burn reduction per seat for the new −900 compared to the previous 235-tonne −300 version. The newer 242-tonne −300 is already 2% more efficient. Since the fan is enlarged from 97 to 112 in (250 to 280 cm), the nacelles are mounted higher, necessitating extensive CFD analysis to avoid supersonic shock wave interference drag , as
3108-448: The aircraft. The aviation operators include the passenger and cargo airliners , air forces and owners of private aircraft. They agree to comply with the regulations set by the regulatory bodies, understand the limitations of the aircraft as specified by the manufacturer, report defects and assist the manufacturers in keeping up the airworthiness standards. Most of the design criticisms these days are built on crashworthiness . Even with
3192-402: The calculation process and many relations and semi-empirical formulas were developed. Even after simplification, the calculations continued to be extensive. With the invention of the computer, engineers realized that a majority of the calculations could be automated, but the lack of design visualization and the huge amount of experimentation involved kept the field of aircraft design stagnant. With
3276-421: The conceptual design phase is then tweaked and remodeled to fit into the design parameters. In this phase, wind tunnel testing and computational fluid dynamic calculations of the flow field around the aircraft are done. Major structural and control analysis is also carried out in this phase. Aerodynamic flaws and structural instabilities if any are corrected and the final design is drawn and finalized. Then after
3360-453: The constraints on their design. Historically design teams used to be small, usually headed by a Chief Designer who knows all the design requirements and objectives and coordinated the team accordingly. As time progressed, the complexity of military and airline aircraft also grew. Modern military and airline design projects are of such a large scale that every design aspect is tackled by different teams and then brought together. In general aviation
3444-613: The design mission. The wing of a fixed-wing aircraft provides the lift necessary for flight. Wing geometry affects every aspect of an aircraft's flight. The wing area will usually be dictated by the desired stalling speed but the overall shape of the planform and other detail aspects may be influenced by wing layout factors. The wing can be mounted to the fuselage in high, low and middle positions. The wing design depends on many parameters such as selection of aspect ratio , taper ratio, sweepback angle, thickness ratio, section profile, washout and dihedral . The cross-sectional shape of
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3528-401: The design process and comprise the non-technical influences on aircraft design along with environmental factors. Competition leads to companies striving for better efficiency in the design without compromising performance and incorporating new techniques and technology. In the 1950s and '60s, unattainable project goals were regularly set, but then abandoned, whereas today troubled programs like
3612-736: The development phase. Examples of this include the Boeing 787 Dreamliner with a delay of 4 years with massive cost overruns, the Boeing 747-8 with a two-year delay, the Airbus A380 with a two-year delay and US$ 6.1 billion in cost overruns, the Airbus A350 with delays and cost overruns, the Bombardier C Series , Global 7000 and 8000, the Comac C919 with a four-year delay and the Mitsubishi Regional Jet , which
3696-412: The engine and the aircraft becomes more relevant." The decision to offer the aircraft with only one engine option is not unique to Airbus; the Boeing 777X will come equipped exclusively with General Electric GE9X engines, after Rolls-Royce made a bid with its Advance configuration but was not selected. The A330-800 retains the fuselage length of the A330-200 , but can seat six more passengers (for
3780-456: The engine flows to compare actual thrust with ground bench measurements. MSN1819 was to validate the Airspace cabin interior fitting with artificial passengers for ventilation analysis and cabin environment measurements. The second test aircraft made its maiden flight on 4 December, to be used to validate aerodynamic & engine performance and airline operations. By the end of January 2018,
3864-542: The engine must balance the drag at cruise speed and be greater than the drag to allow acceleration. The engine requirement varies with the type of aircraft. For instance, commercial airliners spend more time in cruise speed and need more engine efficiency. High-performance fighter jets need very high acceleration and therefore have very high thrust requirements. The weight of the aircraft is the common factor that links all aspects of aircraft design such as aerodynamics, structure, and propulsion, all together. An aircraft's weight
3948-492: The event of loss of cabin pressure, lockable luggage compartments, safety belts, lifejackets, emergency doors and luminous floor strips. Aircraft are sometimes designed with emergency water landing in mind, for instance the Airbus A330 has a 'ditching' switch that closes valves and openings beneath the aircraft slowing the ingress of water. Aircraft designers normally rough-out the initial design with consideration of all
4032-536: The expansion of airways over already congested and polluted cities have drawn heavy criticism, making it necessary to have environmental policies for aircraft noise. Noise also arises from the airframe, where the airflow directions are changed. Improved noise regulations have forced designers to create quieter engines and airframes. Emissions from aircraft include particulates, carbon dioxide (CO 2 ), sulfur dioxide (SO 2 ), carbon monoxide (CO), various oxides of nitrates and unburnt hydrocarbons . To combat
4116-506: The figure originally given for the Airbus A350-800 before it was sidelined in favor of the A330neo. This would give the -900 a 7,000 nmi (12,964 km; 8,055 mi) range to better compete with the 787-9 ’s 7,635 nmi (14,140 km; 8,786 mi) On the -800 at FL400, cruise fuel flow at Mach 0.82 and low weight is 4.7 to 5.2 t (10,000 to 11,000 lb) per hour at a higher weight and Mach 0.83. Airbus unveiled
4200-471: The final assembly line with the first 'Airspace' cabin interior being fitted. A330 production was cut to 50 deliveries in 2019, with more than half of them re-engined A330neos. In April 2020, the production rate decreased from 3.5 to 2 per month due to the impact of the COVID-19 pandemic on aviation , and finished planes were stored while waiting for deferred deliveries. In 2018, unit cost was US$ 259.9 M for
4284-583: The final certification step on 18 June: function and reliability tests or route proving, including ETOPS , diversion airport landing, and testing ground handling over 150 flight test hours, as the flight test programme reached 1,000 hours. Entry into service was planned for the third quarter of 2018 and ETOPS was to be approved in October for 330min. EASA granted the A330-941 type certificate on 26 September 2018, with ETOPS not yet approved. ETOPS 180 min
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#17327800212994368-439: The finalization of the design lies the key decision with the manufacturer or individual designing it whether to actually go ahead with the production of the aircraft. At this point several designs, though perfectly capable of flight and performance, might have been opted out of production due to their being economically nonviable. This phase simply deals with the fabrication aspect of the aircraft to be manufactured. It determines
4452-844: The first A330-800 were entering production in October 2017: high-lift devices are installed on the wing in Bremen , fuselage sections are built in Hamburg , the centre wing-box in Nantes , titanium engine pylons in Toulouse and sharklet wingtips in Korea . Its final assembly started in November 2017, on track for its planned first flight in mid-2018. Structural assembly was completed by February 2018, having its flight-test instruments installed and waiting for its engines before its 300h flight-test programme. At this time, production aircraft progressed through
4536-541: The first half of 2020 to launch operator Kuwait Airways . By late March 2019, it was halfway through the 300-hour flight test programme, having completed 44 flights in 149 hours. The -800 received EASA type certification with 180-minute ETOPS on 13 February 2020; ETOPS clearance beyond 180 minutes was awarded on 2 April. Leased from Avolon, the first A330-900 was delivered to TAP Air Portugal on 26 November 2018, featuring 298 seats: 34 full-flat business, 96 economy plus and 168 economy seats, and to be deployed from Portugal to
4620-457: The first half of 2020. On 8 April 2019, Uganda National Airlines Company firmed up its order for two -800s. Compared to the competing 787-8 with similar engines, the A330-800 has a 1% fuel-per-trip disadvantage (−5% for being heavier but +4% for the longer wingspan) but consumes 4% less fuel per seat with 13 more seats in an eight-abreast configuration, and 8% less with 27 more seats at nine-abreast with 17 in (43 cm) wide seats and aisles:
4704-425: The first logged almost 200h in 58 flights while the second had accumulated nearly 120h in 30 flights. Its flight envelope was fully opened including flutter and stall tests to complete powerplant calibration and strake configuration has been frozen. Airbus commenced autopilot , autoland and high-speed performance testing, and was to move on to hot- and cold-weather tests, as well as noise and icing tests, over
4788-467: The following three months. As of 10 April 2018, the two test aircraft had logged over 200 flights and more than 700 hours, testing −27 °C cold weather, natural icing , crosswind landing , 37 °C and 8,000 ft (2,400 m) hot and high operations. The first TAP Air Portugal aircraft made its first flight on 15 May 2018; it joined the two previous test aircraft to check the cabin systems: air conditioning , crew rest , etc. It started
4872-527: The fuselage length of the A330-300 and the similarly sized four-engined A340-300 . Cabin optimisation allows ten additional seats on the A330-900 (310 passengers) with 18-inch-wide economy seats. The -900 should travel 6,550 nmi (12,130 km; 7,540 mi) with 287 passengers (440 max). Delta expects a 20 percent reduction in operating cost per seat over the Boeing 767-300ER aircraft it replaces. Further reconfiguration of cabin facilities enables
4956-420: The greatest attention to airworthiness, accidents still occur. Crashworthiness is the qualitative evaluation of how aircraft survive an accident. The main objective is to protect the passengers or valuable cargo from the damage caused by an accident. In the case of airliners the stressed skin of the pressurized fuselage provides this feature, but in the event of a nose or tail impact, large bending moments build all
5040-570: The many hazards that pose a threat to air travel. Airworthiness is the standard by which aircraft are determined fit to fly. The responsibility for airworthiness lies with the national civil aviation regulatory bodies, manufacturers , as well as owners and operators. The International Civil Aviation Organization sets international standards and recommended practices on which national authorities should base their regulations. The national regulatory authorities set standards for airworthiness, issue certificates to manufacturers and operators and
5124-420: The number, design and location of ribs , spars , sections and other structural elements. All aerodynamic, structural, propulsion, control and performance aspects have already been covered in the preliminary design phase and only the manufacturing remains. Flight simulators for aircraft are also developed at this stage. Some commercial aircraft have experienced significant schedule delays and cost overruns in
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#17327800212995208-551: The output of the new A350, prolonging the production run of the A330 could help to maintain profitability. After Emirates cancelled 70 orders for the A350, Airbus said it continued to work on re-engining the smaller A330. On 14 July 2014 at the Farnborough Airshow , Airbus launched the A330neo programme, to be powered by the new Rolls-Royce Trent 7000 . It would improve the fuel burn per seat by 14%. Airbus hoped to sell 1,000 A330neo aircraft. Its range would increase by 400 nautical miles (740 km; 460 mi) and although 95% of
5292-547: The parts would be common with the A330ceo, maintenance costs would be lower. New winglets , 3.7 metres wider and similar to those of the A350 XWB , still within ICAO category E airport requirements, along with new engine pylons, would improve aerodynamics by 4%. The A330neo's development costs were expected to have an impact of around −0.7% on Airbus's return on sales target from 2015 to 2017, an estimated $ 2 billion (£1.18 billion). Airbus stated that lower capital cost would make
5376-469: The pollution, ICAO set recommendations in 1981 to control aircraft emissions. Newer, environmentally friendly fuels have been developed and the use of recyclable materials in manufacturing have helped reduce the ecological impact due to aircraft. Environmental limitations also affect airfield compatibility. Airports around the world have been built to suit the topography of the particular region. Space limitations, pavement design, runway end safety areas and
5460-439: The previous A330-300 and that a new engine would not close the gap – but he acknowledged that it could be a threat as it put pressure on Boeing as it sought to break even after 850–1,000 787 deliveries. On 7 September 2015, Airbus announced that it had begun production of the first A330neo with the construction of its centre wingbox and engine pylon. Final assembly of the first aircraft, an A330-900, started in September 2016 at
5544-521: The rise of programming languages, engineers could now write programs that were tailored to design an aircraft. Originally this was done with mainframe computers and used low-level programming languages that required the user to be fluent in the language and know the architecture of the computer. With the introduction of personal computers, design programs began employing a more user-friendly approach. The main aspects of aircraft design are: All aircraft designs involve compromises of these factors to achieve
5628-524: The second unit expected in January 2021. Air Greenland took delivery of its only A330-800, named Tuukkaq, on 6 December 2022 and entered service on 19 December 2022 as a replacement for the Airbus A330-200. As of March 2024, there are seven A330-800s in revenue service with three operators, where Kuwait Airways is the largest operator with four aircraft in its fleet. The A330-900 retains
5712-604: The standards of personnel training. Every country has its own regulatory body such as the Federal Aviation Administration in USA, DGCA (Directorate General of Civil Aviation) in India, etc. The aircraft manufacturer makes sure that the aircraft meets existing design standards, defines the operating limitations and maintenance schedules and provides support and maintenance throughout the operational life of
5796-550: The stresses caused by cabin pressurization , if fitted, turbulence and engine or rotor vibrations. The design of any aircraft starts out in three phases Aircraft conceptual design involves sketching a variety of possible configurations that meet the required design specifications. By drawing a set of configurations, designers seek to reach the design configuration that satisfactorily meets all requirements as well as go hand in hand with factors such as aerodynamics, propulsion, flight performance, structural and control systems. This
5880-550: The unique location of airport are some of the airport factors that influence aircraft design. However changes in aircraft design also influence airfield design as well, for instance, the recent introduction of new large aircraft (NLAs) such as the superjumbo Airbus A380 , have led to airports worldwide redesigning their facilities to accommodate its large size and service requirements. The high speeds, fuel tanks, atmospheric conditions at cruise altitudes, natural hazards (thunderstorms, hail and bird strikes) and human error are some of
5964-417: The way through the fuselage, causing fractures in the shell, causing the fuselage to break up into smaller sections. So the passenger aircraft are designed in such a way that seating arrangements are away from areas likely to be intruded in an accident, such as near a propeller, engine nacelle undercarriage etc. The interior of the cabin is also fitted with safety features such as oxygen masks that drop down in
6048-650: The wing is its airfoil . The construction of the wing starts with the rib which defines the airfoil shape. Ribs can be made of wood, metal, plastic or even composites. The wing must be designed and tested to ensure it can withstand the maximum loads imposed by maneuvering, and by atmospheric gusts. The fuselage is the part of the aircraft that contains the cockpit , passenger cabin or cargo hold. Aircraft propulsion may be achieved by specially designed aircraft engines, adapted auto, motorcycle or snowmobile engines, electric engines or even human muscle power. The main parameters of engine design are: The thrust provided by
6132-535: The wing. MSN1795 was to undertake simulated icing tests and cold-weather tests in Canada, noise assessment, autoland testing and high angle-of-attack , minimum-unstick checks during rotation with a tail bumper. MSN1813 was to test natural icing conditions , assess hot and high conditions in the United Arab Emirates and La Paz , and fly 150h of route-proving; it has rakes and pressure sensors in
6216-490: The –900 to seat up to 460 passengers in an all-economy layout. This exceeds the existing 440-seat maximum exit limit allowed by the type certificate, and requires a modification of the Type-A exit doors to meet emergency exit requirements. In November 2019, maximum accommodation increased to 460 seats, through the installation of new 'Type-A+' exits , with a dual-lane evacuation slide. Amazon Air and UPS Airlines pushed for
6300-439: Was "simply undercut in price". In July 2018, a new memorandum of understanding from Uganda Airlines for two -800s revived interest in the shorter variant. A firm order from Kuwait Airways for eight A330-800s followed in October 2018, making it the largest customer of the type; it was subsequently confirmed that Kuwait Airways would be the launch customer for the -800, with certification expected in mid-2019 and first deliveries in
6384-601: Was approved on 14 November, restricted to engines with fewer than 500 flight cycles. Airbus expects the FAA type certification with 180 min ETOPS by the end of 2018 and 330 min ETOPS in the first half of 2019. Beyond-180min ETOPS was approved by the EASA on 24 January 2019. The maiden flight of the -800 took place on 6 November 2018; the 4h 4min flight inaugurated a 350h test program aiming for mid-2019 type certification, for delivery in
6468-533: Was certified by EASA in April 2022. The A330neo is advertised as having a 12% fuel burn advantage per flight over the older A330 variants. This advantage comes from the 11% gain from the Trent 7000 and its larger 112-inch fan, compared to the 97.5-inch Trent 700 engine. However, this gain is negated by 3% - 2% by additional weight, and 1% due to engine drag - but the sharklets and aero optimization regain 4%, restoring
6552-570: Was delayed by four years and ended up with empty weight issues. An existing aircraft program can be developed for performance and economy gains by stretching the fuselage , increasing the MTOW , enhancing the aerodynamics, installing new engines , new wings or new avionics. For a 9,100 nmi long range at Mach 0.8/FL360, a 10% lower TSFC saves 13% of fuel, a 10% L/D increase saves 12%, a 10% lower OEW saves 6% and all combined saves 28%. A350 XWB Too Many Requests If you report this error to
6636-470: Was first delivered to TAP Air Portugal on 26 November 2018 and entered service on 15 December. The -800 made its first flight on 6 November 2018 and received EASA type certification on 13 February 2020; the first two -800s were delivered to Kuwait Airways on 29 October 2020 and entered service on 20 November. As of October 2024, a total of 356 A330neo family aircraft had been ordered by more than 25 customers, of which 144 aircraft had been delivered. At
6720-401: Was not as efficient as it would like, and Air Lease Corp. added that the company did not consider it reasonable to take the A350-800 and A330neo as they saw no sustainable coexistence of the two aircraft. AirAsia X ended flights to London and Paris from Kuala Lumpur in 2012 because their Airbus A340s were not fuel-efficient enough and would try again with A330s. As Airbus gradually increased
6804-451: Was scheduled to perform 600 h and was to be joined the following month by the second, MSN1813, which will fly 500 h, before the third, MSN1819, the first customer aircraft for TAP Portugal with a complete cabin. Two flight test engineers and two engine specialists monitored the 60GB per hour output of 1,375 sensors and 98,000 parameters, including strips of microelectromechanical systems to measure aerodynamic pressure distribution across
6888-494: Was thought to be cancelling its order for six A330-800s, replacing them with Boeing 787-9s priced at less than $ 100–115m, close to their production cost of $ 80–90m, while Boeing Capital released Hawaiian from three 767-300ER leases well in advance. Hawaiian denied that the order for the A330-800 had been cancelled, but did not dismiss a new deal with Boeing. In March 2018, Hawaiian confirmed the cancellation of its order for six A330-800s and ordered ten B787-9s instead. Airbus says it
6972-504: Was to be delivered to Kuwait Airways in March, but the airline postponed delivery until the third quarter of 2020 amid the COVID-19 pandemic . On 29 October, the first two A330-800s were delivered to Kuwait Airways; the airline has six more -800s on order. The A330-800 then operated its first revenue flight on 20 November, flying the short distance between Kuwait and Dubai . Uganda Airlines received their first A330-800 on 21 December, with
7056-419: Was under development for the 787-10, but Rolls-Royce intended to offer a broad power range. The A330neo uses the Rolls-Royce Trent 7000 engine, which is an electronic controlled bleed air variant of the Trent 1000 used on the Boeing 787-10 . It will have a 112 in (284 cm) diameter fan and a 10:1 bypass ratio. They deliver a thrust of 68,000 to 72,000 pounds-force (300 to 320 kN). The Trent
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