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The design of the twin-engine Boeing 777 aircraft was launched in the late 1980s with the objective of capturing the long-distance air travel market. The aircraft was designed to fill a gap between the four-engine 747 with a passenger capacity of around 400 and the twin-engine 767 with a passenger capacity of approximately 200. During the development of the 777, Boeing had to face competition for the 300-350 passenger 777 aircraft from the newer generation of planes introduced by rival manufacturers, i.e. the 323- seat MD-11 from McDonnell-Douglas which replaced the DC-10 with more efficient engines, and the four-engine A-340 and the twin-engine A-330 from Airbus. The airlines which worked with Boeing in the development of the 111 forged an agreement early on in the design that its fuselage would be much wider than that of the MD-11, A-330 or A-340.
(a) Speculate about the implications of the larger fuselage on the strength, weight and power requirements.
(b) Speculate about the implications of the larger fuselage on damage tolerance considerations and design against fatigue fracture.
Using EES (or other) software, write a program to determine the entropy change of a mixture of three ideal gases when the mass fractions and other properties of the constituent gases are given. Run the program for a sample case, and give the resul..
A rigid tank contains 40 lbm of air in 20 psia and 70 degrees F. More air is added to the tank untill the pressure and temperature rise to 35 psia and 90 degrees F, respectively.
Determine the height, h, the water level will rise in the tank before remaining constant. Also, if initially the tank is empty, what amount of time will it take for the water level to rise to h? Be sure to justify all assumptions made.
An open rectangular channel is 50 feet wide, flowing at a depth of 5 feet, and is carrying 1000 cubic feet per second. What is the maximum step height than can be placed into the flow without disturbing the upstream depth, without acting as a chok..
Prepare a Mass Haul diagram for the works and prepare a suitable earthworks plan for 3 of the main hauls - As a condition of the contract all available cut material must be used to make up fill embankments before bringing on site any external import..
Ask question ellipse construction via foci method
A drinking water system treats a flow of 3000 gallons per minute. Consider disinfection of a bacteria by ozone with an inactivation constant of K=0.06/min. To reduce the number of bacteria from 400 bact/ml to 4 bact/ml.
A rectangular concrete channel is 3 m wide and 2 m high. The water 20 deg Celsius in the main channel is 1.5 m deep and is flowing at a rate of 30 m^3/s. determine the flow area, wetted perimeter, and hydraulic radius. is the flow laminar or turbu..
A three span continuos beam has spans of 27, 30, 27 feet, total unfactored dead loads are 2,600 pounds per linear foot, unfactored live loads are 2,000 pounds per linear foot. For load combination 1.2D + 1.6L
Assume that the energy contained in coal is about 10,000 Btu/lbm. An electrical power plant burning coal has an output capacity of 1200 MW and the plant converts about 30% of the input energy to electricity.
Emphasis on plant capacity and Economical sewer pipe material - West water treatment plant capacity assessment
For an intermediate beam in 3 bays by 3 bays (each bay is 20' by 20') floor plan, draw the envelope shear and moment diagrams taking into account effect of pattern loading.
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