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Aerospace Engineering

Aerospace Engineering. Introduction. History of Flight Wright Brothers (1903) to landing on the Moon (1969) Key points in flight design. Structures. Object Light Weight High Strength Examples Wood, Aluminum, Titanium, Composites. Aerodynamics. Object High lift Low Drag Examples

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Aerospace Engineering

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  1. Aerospace Engineering

  2. Introduction • History of Flight • Wright Brothers (1903) to landing on the Moon (1969) • Key points in flight design

  3. Structures • Object • Light Weight • High Strength • Examples • Wood, Aluminum, Titanium, Composites

  4. Aerodynamics • Object • High lift • Low Drag • Examples • Triplane, Biplane, Mono plane

  5. Propulsion • Objective • High Thrust • Low Weight • Examples • Reciprocating Engines w/ Propeller • TurboJet - gas turbine in which the exhaust gases provide the propulsive thrust • TurboProp - aircraft propulsion unit where a propeller is driven by a gas turbine • TurboFan – Thrust from both exhausting gas and fan blow by. • Ramjet, jet engine in which fuel is burned in a duct using air compressed by the forward speed of the aircraft • Rockets/Scramjet - liquid rocket propulsion for ‘spaceplanes’

  6. Radial Reciprocating Engine Douglas DC-3

  7. TurboJet

  8. TurboProp

  9. TurboFan

  10. RamJet

  11. Flight Dynamics • High Performance • speed, range, altitude, payload • Stable/Maneuverable

  12. Controls • Fly-By-Wire • All Weather Navigation

  13. Type of Wing • Fixed wing airplanes • Cessna • Helicopters • Single central blades • Hughes 500D • Dual blade systems • Chinook • Hybrid • Osprey

  14. Wind tunnel experiments • Airfoil Design • Wing cross sections • Angle of Attack • Turbulence • Lift

  15. Speed of flight • Wind tunnel designs • Subsonic – less then the speed of sound • Speed of sound - 770 mph Mach I • Supersonic – higher than the speed of sound (770 mph) • Hypersonic – Mach 5, air molecules ionize!

  16. Future of Commercial Flight • Concorde - French and British Consortium • Speed - Mach 2.04 (around 1350MPH)

  17. Future of Flight – AirBus(European Consortium) • A 380 • Three Decks • From 550 to 840 seats! • 1.2 million pounds • Largest TurboFan engines • Speed – Mach 0.88 • 15,000 mile range

  18. Boeing • 787 Dreamliner • Speed Mach 0.85 • 400,000 pound (max) • 15,000 mile range • Fuel Efficient

  19. Aerodynamic Forces • A – Lift • B – Thrust • C – Weight • D - Drag

  20. Flying Wing Northrop B-2

  21. Boeing – Future considerations • Blended Body and Wing

  22. Experimental Aircraft designed by SU graduates students

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