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Forces in Aerodynamics: Blended Wing Body - Research Paper Example

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Forces in Aerodynamics: Blended Wing Body

The efforts made to increase the efficiencies of both the commercial aircrafts and the military aircrafts have been successful through the Blended wing Body concept that has recently had a successful prototype built by NASA and other industrial partners. The concept of the “Blended Wing Body” as the name suggests is to have a body or a flying wing with which the outer wings are blended. This concept has displayed several advantages over the conventional aircrafts in the overall aerodynamic efficiencies. Due to the contour of the aircraft, it has maximum lift and can take off with a minimum drag. This is possible as the whole aircraft is integrated into a single lifting surface with the body, engines, and wings all in one single blended surface.We can observe several variations like the integrated body and wings, the mounted engines on the rear of the fuselage, the other parameters like the span, weight, passenger capacity and seating arrangement are shown and the overall design of the BWB is also clear. This design of the BWB aircraft highly influences the factors like reducing noise in the take off and landing operations, increasing fuel efficiency, reducing unwanted emissions, and inturn making travelling more economical. “The unique layout of the BWB configuration places the noise generating engines above and rear of the wing-centerbody upper surfaces, suggesting that a significant reduction in projected noise might not be obtained from a structural shielding as compared with conventional configurations”.
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Figure 3 compares the sizes of an Airbus and a BWB aircaft The above figure gives an excellent comparision between the conventional aircraft and the BWB aircraft. We can observe several variations like the integrated body and wings, the mounted engines on the rear of the fuselage, the other parameters like the span, weight, passenger capacity and seating arrangement are shown and the overall design of the BWB is also clear. This design of the BWB aircraft highly influences the factors like reducing noise in the take off and landing operations, increasing fuel efficiency, reducing unwanted emissions, and inturn making travelling more economical. “The unique layout of the BWB configuration places the noise generating engines above and rear of the wing-centerbody upper surfaces, suggesting that a significant reduction in projected noise might not be obtained from a structural shielding as compared with conventional configurations” (Joseph R. Chambers) This BWB designed aircraft with a double deckered interior cabin can carry as many as 800 passengers, which is approximately double the number (416) in the Boeing 747-400. Figure 4 shows double deckered seating arrangement in a BWB aircraft The BWB aircraft have been designed to withstand internal pressure loads which induce high bending stresses and the additional bending and compression loads, that arise as a result of aerodynamic and gravitational forces. These structures have high strengths and can take both cabin and high bending loads. The experiments conducted by NASA have proved that the design of BWB has drastically changed some features that proved to be higly advantageous over the conventional design. The fuel consumption, the weight, and the direct cost of ...Show more
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Summary

This paper explains all the concepts of Blended Wing Body and how when put to use can cause great results and finally the application of this concept. The writer takes a close look at the concept of BWB and how the research of Dr. Joseph R Chambers helps us to understand this theory. …
Forces in Aerodynamics: Blended Wing Body
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