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NASA Green Aviation Challenge. David Axel Virzi Marina Correia William Tejada. The Challenge. Design non-conventional aircraft to assist in the goals set forth in the NASA metrics below Noise reduction, reduced fuel consumption, and weight reduction . Problem Statement.
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NASA Green Aviation Challenge David Axel Virzi Marina Correia William Tejada
The Challenge • Design non-conventional aircraft to assist in the goals set forth in the NASA metrics below • Noise reduction, reduced fuel consumption, and weight reduction
Problem Statement • Aerodynamic design of a 200 passenger aircraft for • Drag reduction • Reduced fuel consumption • Lower acoustic signature • Weight reduction • Incorporation of co-flow jet on a morphing wing to assist in aforementioned requirements by • Increased laminar flow • Adaptability to various flight conditions • Reduction of mechanical components
Conventional Aircraft • Tube design is not the most aerodynamically efficient design • Design features several surfaces such as the vertical and horizontal stabilizers that increase the overall drag of the aircraft • Passenger and cargo limitations – large aircraft such as the Boeing 747 and Airbus A380 feature tall designs that induce a lot of drag
Airframe Design Comparison (A star signifies an option that best fits that category) Canard Design Flying Wing Design
Blended Wing Body Design • BWB designs feature lower drag coefficients and higher lift coefficients than conventional passenger aircraft designs • Unconventional designs can carry 800 passengers while using 20-25% less fuel
Conventional Wings • Conventional wings on passenger aircraft contain thousands of moving parts that add weight and contribute to difficulty in maintenance • Control surfaces needed to control the aircraft cannot adapt to different flight conditions • Current control surfaces disrupt smooth airflow
Morphing Wings • Can compensate for various flight stages • Smoothly redirect airflow with minimal turbulence and drag • Overall weight can be reduced through elimination of excessive mechanical parts • In conjunction with carbon fiber reinforced composites, wings can be designed to deform to their desired shape
Actuation Design Alternatives Shape Memory Alloy Piezo-Electric Actuation
Co-Flow Jet • CFJ flow control significantly enhances properties of lift and drag • Maintaining attached flow reduces fuel consumption and noise emissions
The End • Questions?