Aerospace Engineering

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Aerospace Engineering
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Introduction

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

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Structures

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

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Aerodynamics

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

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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

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Radial Reciprocating Engine
Douglas DC-3
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TurboJet
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TurboProp
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TurboFan
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RamJet
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Flight Dynamics

• High Performance
• speed, range, altitude, payload
• Stable/Maneuverable

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Controls

• Fly-By-Wire
• All Weather Navigation

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Type of Wing

• Fixed wing airplanes
• Cessna
• Helicopters
• Single central blades
• Hughes 500D
• Dual blade systems
• Chinook
• Hybrid
• Osprey

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Wind tunnel experiments

• Airfoil Design
• Wing cross sections
• Angle of Attack
• Turbulence
• Lift

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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!

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Future of Commercial Flight

• Concorde - French and British Consortium
• Speed - Mach 2.04 (around 1350MPH)

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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

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Boeing

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

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Aerodynamic Forces

• A Lift
• B Thrust
• C Weight
• D - Drag

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Flying Wing
Northrop B-2
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Boeing Future considerations

• Blended Body and Wing

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Experimental Aircraft designed by SU graduates
students
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