Conceptual Design of Blended Wing Body Cargo Aircraft

CONCEPTUAL DESIGN OF BLENDED WING BODY CARGO AIRCRAFT PRESENTED BY – PAWAN RAMA MALI

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Objective

Is a BWB aircraft design more aerodynamically efficient than a conventional aircraft configuration?

How does the BWB compare overall with a conventional design configuration?

What is the trade-off between conventional designs and a BWB arrangement?

What mission requirements, such as payload and endurance, will a BWB design concept become attractive for?

What are the practical issues associated with the BWB design that need to be addressed?

Statement of the Problem

This aircraft is known to have many advantages over the conventional tubular fuselage plane.

The two main aspects that blended wing body aircrafts possess are better aerodynamic efficiencies and more interior space capability.

The use of BWBs for full scale passenger aircraft is still some time away due to some problems; complications to pressurize the cabin. The issue lies within the shape.

What is a BWB ?

Features of BWB

DESIGN STAGE

COMPUTATIONAL DESIGN

A380 Aircraft Design on CATIA V5 for CFD Simulation

Design Process on HyperMesh

Modified Engine Design on TGrid3

Activities on Fluent Platform

Contours of static pressure

Initial BWB Layout Planning

Optimized BWB

L/D with Wetted Aspect Ratio

Airfoil Selection

Airfoil Shape Modification of the Main Sections for BWB

Comparison of the Wing Surface Pressure Coefficient Distribution

Contours of static pressure of the Central Wing section

Comparison of the Wing Surface Pressure Coefficient Distribution

Contours of Static Pressure of the 16 m Spanwise Wing Section

CFD Results of selected airfoils

WEIGHT ESTIMATION

Comparison of the A380 and BWB

CFD Results of the Progressive BWB without Engines

CFD Results of the Progressive BWB without Engines

CFD Results of the progressive BWB Models without Engines

CFD Result of the Baseline BWB

Improvement of Aerodynamic Capabilities of the BWB Configurations

BWB Control System

C.G. Locations of the BWB

Conclusion

BWB offers more potential than the current A380 prototype.

The empty weight of the BWB was similar to the weight of the A380, but the required fuel weight of the BWB is 45 percent less .

The TOGW of the BWB (420 tons) is 24 percent lighter than the A380 (560 tons)

The BWB design (21.43 of the L/D) achieved 1.5 times higher L/D ratio than the A380 (13.97 of the L/D). within the same flight mission segment.

The flight features of small drag value and less engine thrust requirement predict to perform with less noise emission, and make it a more environmentally-friendly vehicle.

FUTURE SCOPE OF THE STUDY

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