A BWB aircraft is a configuration where the wing and fuselage are integrated which essentially results in a large flying wing. BWB aircraft were previously called ‘tailless airplanes’ and ‘Flying-Wing aircraft’. It is an unconventional aircraft design that has continued to attract a great deal of interest due to the promise of great aerodynamic advantages. The conventional wing fuselage configuration has been proven design for many years but, from aerodynamic point of view, is lacking efficiency.
The fuselage provides for a great amount of drag while contributing nothing to the lift of the aircraft. This deficiency has always been balanced by the need for an adequate section to hold the passengers and cargo. The idea for the blended wing body, or flying wing, is to provide a single lifting surface stretching the entire wingspan of the aircraft. There is no tail and no conventional fuselage. Also, the shape of the blended wing body allows for a much smaller wetted area, which in turn increases the lift to drag ratio.
1.2 Historical Background
The transcendence of the aerodynamically efficient BWB design from the standard aircraft design began during the World War II in order to outstrip the already existing designs to prove the superiority and efficiency in military power. The concepts of tailless aircraft and Flying-wing design were remarkably bought to life by the pioneers in USA and Germany.
• Early Flying Wing projects
After the World War I, in 1912 an English Engineer John William Dunne developed the first successful tailless aircraft. Dunne’s based his design on his success with Tailless gliders. His designs were inherently stable in pitch and incorporated wing washout.
Later on in 1931, Lippisch Deltas and Messerschmitt ...
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...ons and CFD results of the BWB configuration are represented, including aerodynamic advantages and aerodynamics features of BWB configuration.
Israel Aircraft Industries pioneers, Peigin and Epstein [16] used NES multiblock code (a Navier-Stokes solver) with the aim of developing an aircraft with minimum drag. The baseline geometry used in this project was same as Qin et al. [15] with lift coefficient of 0.41 and Mach Number 0.85. The resulted design eliminated the shock and the initial drag count of 247 dropped to 194.5 counts. Also, the drag divergence Mach number is increased from 0.855 to 0.87.
Fig. 2-5 Conceptual Flying Wing Design with the A380 Structures (Lee 2003)
In conclusion, the BWB design has offered more attractive features than a conventional design. However, an extensive preliminary design phase is further required to make this concept a reality.
Following the bi-planes, the bomber design took great change. In a Unites States Army Air Corp or USAAC competition in 1934, they were looking for a new plane that could provide defense and better qualities than the current service plane, the Keystone bi-plane bomber. (Boeing B-17 Flying) Boeing came up with the design and built the B-17 and won the competition. The plane was not a bi-plane, but a single winged, nine cylinder radial engine plane that could carry a normal cargo storage of 25 tons and could fly a distance of 2 thousand miles. (Boeing B-17 Flying) The plane had been described by a German test pilot who flew a captured B-17 who said “the aircraft was easy to fly and land. When one had become accustomed...
The B-2 Spirit was derived from Northrop's flying wing prototype of the mid forties. The flying wing design was ahead of its time, during the years of World War II, the axis and allies were racing to develop the best aircraft and Jack Northrop wanted to create something out of the ordinary, something that would revolutionize aviation as we knew it. In the late 1940s, Northrop developed a bomber version of the propeller flying wing, but control technology wasn't advanced enough so that program had to be halted.
The Wright brothers made the first motorized aircraft, that flew a distance of 852 feet in 59 seconds.To make this happen the Wright brothers had to put a lot of thought into it, some of the important details that were key to making the airplane fly where, the wings, propulsion system and engine.
In the 1930s airships, better known today as “blimps”, were the main source of air travel. During this time, the airships were used for various different reasons such as: bombing enemy targets, patrolling coastal areas, escorting naval ships during the night or through unsafe bodies of water, or used to make luxury flights across the Atlantic. The Hindenburg was believed to be the biggest and most sophisticated aircraft ever built.
Following World War II and the jet engine technology that emerged largely toward its end, aerospace engineers knew well that the technology had great potential for use in the commercial aviation industry. The Comet was the first aircraft to utilize jet propulsion; however, its designers failed to consider the metallurgy of the aircraft’s materials under flight conditions or the consequences of their atypical window design. The aircraft was designed by Britain’s De Havilland Aircraft Company and entered service in May 1952. After a year of service, however, the design issues mentioned above resulted in the failure of several Comet aircraft. Extensive evaluations revealed that repeated pressurization stress on the aircraft’s main cabin had caused its structure to fail.
Many people are amazed with the flight of an object, especially one the size of an airplane, but they do not realize how much physics plays a role in this amazing incident. There are many different ways in which physics aids the flight of an aircraft. In the following few paragraphs some of the many ways will be described so that you, the reader, will realize physics at work in the world of flight.
This plane gave best results. The 2ft resulted in this data a drastic and bad crash into the wall. (No lives lost) Conclusion: The lighter plane flew further based on this design.
Mortimer, G. (2013). Giving the machine gun wings. Aviation History, 23(6), 50-5. Retrieved from http://ehis.ebscohost.com/eds/pdfviewer/pdfviewer?sid=2e489df0-5604-49cf-8709-9359f8a1feee%40sessionmgr4003&vid=3&hid=4211
" http://www.bea.aero.com/. BEA, 16 Jan. 2002. Web. The Web. The Web.
From the Wright Flyer to the aircraft we fly today, they all started as a dream that later turned into a design. NASA is not sending astronauts into space at the moment, but that has not stopped the engineers at NASA from working on advanced aerodynamic designs and technologies that would help us achieve the dream of traveling farther, faster and higher. Improved materials such as carbon-fiber give an aircraft lighter weight, improved performance and lower fuel consumption. NASA’s newest design in carbon-fiber is called “PRSEUS” (Pultruded rod, Stitched, Efficient, Unitized Structure), a material that will be stronger than current carbon-fiber technology and will greatly reduce the need for rivets and other fasteners that lead to structural fatigue. NASA believes this new material will help Boeing achieve its goal of an aircraft of blended wing design (Sloan, 2011). Boeing has stated that tests for strength and performance on PRSEUS have exceeded their expectations. Boeing is using this new material in their X-48B, a small scale functional ble...
More cost-effective modes of space transportation are necessary to make further exploration possible. One new, cost effective design is the aerospace plane. These spacecraft are totally reusable and can take off and land like a normal plane (Booth 80). Anything reusable cuts costs. Many commercial spaceflight companies are interested in this design because so much money can be saved.
Wings create lift for the upward force of an airplane. A great example of how this happens is sticking your hand out of a car window driving down the freeway. The force on your flat palm causes a force that can lift your hand up or down by changing the
Ever since I was little I was amazed at the ability for a machine to fly. I have always wanted to explore ideas of flight and be able to actually fly. I think I may have found my childhood fantasy in the world of aeronautical engineering. The object of my paper is to give me more insight on my future career as an aeronautical engineer. This paper was also to give me ideas of the physics of flight and be to apply those physics of flight to compete in a high school competition.
In 1958, the United States government created the Federal Aviation Agency (FAA) because of increasing safety concerns due to aviation accidents. However, they were not the first government organization that regulated air transportation. Even in 1958, the FAA shared certain responsibilities with other organizations. The responsibilities of the FAA at the time were limited when compared to their functions today, but it was an important step to effectively create a safe air transportation environment. To truly understand why the FAA was created, one must first understand the government’s role within the country’s transportation system.
The future of passenger aircraft and their manufacture has an amazing outlook. Every year, the brightest minds in aviation compile the greatest technological advances towards creating the safest and most economical aircraft on the planet. No detail is over looked, and the bottom dollar is the controlling factor. From private aircraft to public aircraft, space exploration and beyond, the future is bright for the passenger aircraft market, and everyone who purchases air travel should be excited to see how the industry unfolds. Let's kick this off!