Boeing 747 wing bending test pdf

Watch these 7 airplane wings pushed to the brink and beyond. It was conceived in general terms by juan trippe, the founder of pan american world airways, and it was intended to boost the tourist trade. This improvement in ld is more than twice as great as that achieved by the comparable wingtip extension producing the same wing root bending moment. After dropping its sonic cruiser project, boeing announced the conventional 7e7 on january 29, 2003, focused on efficiency. The lift produced by the wing results in a large bending moment at the wing root that must be transferred to the wingbox the structure that. A given curvature of the wing due to bending at the wing root will cause a tip displacement which is proportional to the distance of that tip from the root. Mar 31, 2010 take a look at the boeing 787, for example. The boeing 747 cross sections also begin as a circular shape, but it flattens out on the bottom progressively towards the end of the fuselage. Basically because the fuselage flexes due to cabin pressurization, and the wing flexes due to bending. This improvement in ld is more than twice as great as that achieved by the comparable wingtip extension producing the same wingroot bending moment.

The jumbo jet, christened the city of everett, is the first new boeing transport not painted in boeings traditional prototype colors of brownishcopper and yellow. Boeing has completed one of the more spectacular tests of the 787 dreamliner program. The 747 400 is the most recent, longest extending and top rated model of the 747 gang. The 747 was found to be largely immune to dutch roll, a phenomenon that had been a major hazard to the early swept wing jets. The wing span of the boeing 747400 is 229ft and the airbus a380 has a wing span of 261ft 9in 1. The wings on this airbus flex way more than they should. The 747 500x and 747 600x would have had the 777s wing. Boeings new 7478 continues a jumbo tradition wired. Commercial level simulations bring you the 200 and 300 versions in superb high. Boeing analysis shows 787 passed wingbend test the seattle. An anonymous reader writes boeing is making the wings of its new 787 out of carbon fiber instead of metal. What are the effects of the boeing 787s very flexible wings. Boeing 7478 new wing design the 7478s wing design provides additional performance with lower noise. The 7478 is the third generation of the 747, with a lengthened fuselage, redesigned wings, new engines, and improved efficiency.

The boeing 777 fatigue test airplane has lived up to its name and is in for a muchdeserved rest after having flown the equivalent of 120,000 flights. This joint has to be very flexible to allow flexing. Jameson 2004 515 aerostructural wing planform optimization. Us certificate with pw4000s was honored in january 1989. Operational requirements for high altitude, long endurance hale aircraft capable of carrying. For jet engine wing mounting mechanical engineering. For example, a boeing blog post from 1997 describes the strategy for one planes fatigue tests. More flex would give up too much aerodynamics, less flex would weight too much. The airplane was production line number 105 and available records indicate that the. The 7478 is the largest 747 version, the largest commercial aircraft built in the united states, and the longest operational passenger aircraft.

Boeing 777200lr geometry data fuselage length diameter wetted area 206. Boeing 747 takes maiden flight on february 9, 1969. The boeing 747 8 is a widebody jet airliner developed by boeing commercial airplanes. Delin eation of specific subelements, such as analysis or testing. The largestever plane, officially announced in 2005, has lengthened fuselage, redesigned. Boeing photo boeing says it has still not decided whether to break the wings of its 787 static test plane as part of the upcoming certification. Mounting these new engines under a wing can present new challenges. Air force as airborne command and control platforms since 1974. Boeing large jet airplane wings have always been designed to bend it is more obivous on the b52 due to its heavy load carrying ability and on the dreamliner due to.

B747400 operating procedures anythingaboutaviation. The lockheed l1011 tristar, commonly referred to as the l1011 pronounced lteneleven or tristar, is an american mediumtolongrange, widebody trijet airliner by lockheed corporation. Questions 747 wing bending by how much the wing on a fully loaded 747 400 bends upwards on takeoff. A boeing 747sp aircraft was modified by l3 communications integrated systems to accommodate a 2. Boeing 747 the boeing 747, here an iberia 747 200, is a low wing airliner powered by four turbofans, with a distinctive raised forward passenger deck and cockpit role widebody jet airliner. If boeing did their job right, the wing is right at the sweet spot of the most aerodynamic performance they can get for minimum weight.

However the first 747 type rolls out of factory at sept. The airplane maker completed the ultimateload wing up bending test on sunday using airframe zy997, the test. Boeing 747400, pictures, technical data, history barrie. Jan 18, 2016 watch these 7 airplane wings pushed to the brink and beyond. Benchtop bending test of wing, and comparison with analysis. Spar cap carries bending loads and web carries shear. The company is expected to deliver the first 787 to all nippon. The flattening becomes oval in the area under the horizontal tail. The boeing 787 dreamliner is a widebody airliner manufactured by boeing commercial airplanes. The 747 8 is the third generation of the 747, with a lengthened fuselage, redesigned wings, new engines, and improved efficiency. This site is all about the boeing 747 from the early history of the 747100 to the current 7478i and the experimental planes. Boeing propelled the 747 400 in october 1985 and the first improvement air ship first flew on april 29 1988. Boeing 747200300 3 introduction everybodys favourite airliner is taking to the skies in a jumbosized package for fsx.

Department of transportation federal aviation administration. Here youll see the wings of a boeing 777 undergoing a test that goes by several names including wing up bending test and static. The 747 8 is the latest version of the 747, and it was designed in the 2000s. It was the third widebody airliner to enter commercial operations, after. Nov 18, 2008 787 wing box loaded to destruction in saturday test. So the 787 has passed a crucial wing test, but ill certainly be curious to.

Pdf static testing for composite wing of a twoseater seaplane. The takeoff weight for our proposed aircraft is around about 0000lbs 1221267. Barter 16 studied the failure of the wing landing gear trunnion fork assemblies of a boeing 747 300 aircraft. Design of a ground static load test for a 3 m joined wing flexible. Aiaa 20014619 a study of air launch methods for rlvs. I seem to remember an upward force bent the 747 wing 26 feet at the tip until the spar snapped. The upper wing and the struts 1 this chapter is based in part on cunningham, et al. The boeing 7478 is a widebody jet airliner developed by boeing commercial airplanes. Boeing initially said this wouldnt affect the certification timeline. Also the 7478 will have more wing flex than the older 747 series. One of the tests required is a wing max loading test where they bend a wing until it fails. Introduction to wing structural design aerotoolbox. The program was launched on april 26, 2004, with an order for 50 from all nippon airways ana, targeting a 2008 introduction. The 747 8 officially announced in 2005, the 747 8 is the fourthgeneration boeing 747 version, with lengthened fuselage, redesigned wings and improved efficiency.

If you look out of the window and at the wing of a modern airliner like the boeing 787 during takeoff and landing you are sure to see a high degree of flexing. Statistical loads data for the boeing 777200er aircraft in commercial operations november 2006 final report this document is available to the u. On february 9, 1969, boeing flies its 747 model for the first time. Top as part of the f15c fullscale fatigue test in st. In a carefully planned extreme test inside boeings everett plant sunday, engineers bent the wings of a 787 dreamliner groundtest airplane. Certification process for 777x is another hurdle for boeing. The stresstest blow out of a door on the 777x last year adds another question. Selected advanced aerodynamics and active controls technology. Boeing in late september began assembling the first test example of a composite wing for its indevelopment 777x widebody twin, two years ahead of the aircrafts flight debut. Assessment of wingtip modifications to increase the fuel. Dec 20, 2017 boeing 787 vs airbus a350 incredible wing flex head on view takeoff. The work reported in the abovereferenced paper was supported by the u s air force materials laboratory, whose.

While on the subject of environment, many pilots believed the rear mount was dangerous when it came to ice build up on the wings which once dislodged was directly in line with the engine inlets. The boeing 737 max uses a new type of wingtip device. If youre flying and you see your wings looking like that. How are the wings of large airliners attached to the. The 747 400 remotely takes after the 300, however it is an altogether enhanced air ship. A swept wing is a wing that angles either backward or occasionally forward from its root rather than in a straight sideways direction swept wings have been flown since the pioneer days of aviation. Barter 16 studied the failure of the wing landing gear trunnion fork assemblies of a boeing 747300 aircraft. The 747 is designed for long flights, with a typical max range of 7,700 nmi. The 747500x and 747600x would have had the 777s wing. Resembling a threeway hybrid between a winglet, wingtip fence, and raked wingtip, boeing claims that this new design should deliver an additional 1. Airbus and boeing use reinforced plastic composites in respectively 53% and 50% of the a350 and b787 fuselage respectively. A study of air launch methods for rlvs marti sarigulklijn, ph.

Wong, scho ol of aer ospace engineering, georgia institute of technology, atlanta, georgia. Example of wing elastic bending deformation calculated by. Boeing 787 vs airbus a350 incredible wing flex head on. Jul 07, 2010 this boeing 777 wing was tested to destruction, finally breaking at one fifty four percent of the designed limit load. During later stages of the flight test program, flutter testing showed that the wings suffered oscillation under certain conditions. Composites account for about 10% of total structural weight the graphiteepoxy empennage i. Statistical loads data for the boeing 777200 aircraft in.

Winglets were also considered for use on the boeing b747 airplane as part of the nasa energy efficient transport eet program. Selected advanced aerodynamics and active controls. A side view of the 747 400 after body is shown in figure 1. Boeing 787 vs airbus a350 incredible wing flex head on view. The boeing 7478 is a commercial airliner using the same engine and cockpit technology as that of the 787.

A given curvature of the wing due to bending at the wing root will cause a tip displacement which is. Boeing reinvents the 777 assembly line while production. I am guessing so they could use the existing wing tooling and to be able to grandfather the wing under the existing type certificate. Lna is told, however, that this remains unclearanother potential impact of the max crisis. The failure reportedly was within 1% of the required safety margin. By testing to the extreme, and often beyond, structural.

Analysis of the failure showed that deep machining grooves were present as a. In this research the naca 6 series airfoils with % thickness to chord ratio at. Boeing said wednesday that all test requirements were successfully met during last months extreme wing bend test performed on the 787 dreamliner. Have you ever been sitting by an aircraft window and though. The cooperation of vought aircraft and boeing commercial airplane company is gratefully acknowledged. If you see a split wing tip, with main wing bending upward and an additional small winglet inserting from the downward, good, it is for sure the newest model b737 max. These modified boeing 747 200bs have been serving the u. The main purpose of static testing is to examine the bending strength of. Boeing 747100,200,300,sp without question, the boeing 747 jumbo jet marked a turning point in commercial aviation. With the 7478, boeing didnt want to change the structural arrangement of the wing. Boeing completes crucial wingbending test on 787 the. Selected advanced aerodynamics and active controls technology concepts development on a derivative b 747 aircraft summary report staff of boeing commercial airplane company the boeing commercial airplane company seattle, washingtorl prepared for langley research center under contract nasl14741 national aeronautics.

Boeings chief test pilot for the 747 program the man who has. Pdf assessment of impact load curve of boeing 747400. Take a look at the new boeing 787, the radical future of commercial flight that will soon be at airports everywhere. As part of an faa aging aircraft demonstration programme 28, nine bondedcomposite doublers were applied to a boeing 747300 aircraft in service with qantas 5,33,34. There are some very tricky joints between the upper wing skin and the fuselage, however. Sofia, the largest airborne observatory in the world, is a collaborative effort of nasa and dlr, the german aerospace center. They are seen on all boeing aircraft except the 747 and none of the airbus aircraft. Boeing 787 vs airbus a350 incredible wing flex head on view takeoff. Winglet multiobjective shape optimization sciencedirect.

The boeing joined wing sensorcraft jwsc concept is one such exam ple. Those wings are flexing a lot, i wonder if that is normal. Most manufacturers have gone the way of boeing and now mount engines beneath the wing which reduces the bending movement of the wings. Ultimate wing load testing is standard procedure for any new airplane design and has been done on aircraft large and small almost since the. Investigation of a boeing 747 wing main landing gear. The total weight of the test airplane was estimated at 236,000 pounds. Wing sweep at high speeds was first investigated in germany as early as 1935, finding application just before the end of the second world war. Investigation of a boeing 747 wing main landing gear trunnion. The reference wing area of the boeing 747400 is 6824 square feet and the reference wing area of the airbus a380 is 9095 square feet ft21.

During the early days of its introduction in the late 1960s, boeings iconic 747 jumbo jet had engine mount problems. The 747 8 is the largest 747 version, the largest commercial aircraft built in the united states, and the longest passenger aircraft in the world. Preliminary analysis of drag reduction for the boeing 747400. Aiaa 2001 2407 1 american institute of aeronautics and astronautics performance analysis of a wing with multiple winglets m. Basically, they take the airplane and bend its wings to an absolutely insane level. The test airplane was a boeing 747100 in a basic passenger configuration. The airplane maker completed the ultimateload wingup bending test on sunday using airframe zy997, the test. Process of the fatigue testing of the wing of a small fourth seats aircraft. Boeings b52, keeper of the peace or flying test lab. We are installing final systems elements, interiors, and flighttest equipment.

With the 747 8, boeing didnt want to change the structural arrangement of the wing. This difficulty was partly solved by reducing the stiffness of some wing components. Iliev and others published assessment of impact load curve of boeing 747400 find, read and cite all the research you need on researchgate. Reduced the wing root bending moment reduced wing weight. Why do the boeing 787 dreamliner wings curve when flying.