04 Sept 3 - Structures 1

04 Sept 3 - Structures 1 - AOE 2104-Aerospace and Ocean...

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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech September 3 2009 Aircraft Structures Click to edit Master subtitle style AOE 2104 Introduction to Aerospace Engineering Aircraft Structures
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech September 3 2009 Aircraft Structures Structures have evolved from truss based fabric covered designs to semimonocoque designs What is a truss? One or more triangular units Straight slender members ends are connected at joints referred to as nodes Example of early truss structures? Wright flyer, Sopwith camel… etc What is special about this time period? History of Aircraft Structures
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech September 3 2009 Aircraft Structures History of Aircraft Structures
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech September 3 2009 Aircraft Structures Bi-planes dominated design for sometime. Why? History of Aircraft Structures {6F751B87-028E-44B5-8D63-8089191BD113} U+L Wings {F8FCF311-682E-4EFC-8066-0094B9A339F9} Wires {7F0CC3F0-C20A-4E4C-973F-3E47DB8907FB} Deep, light structure. Res Twisting {358AD189-0C04-4F0F-B1C6-A0256D813BA4} Bending {0E39AF66-6A5A-4C08-A7D8-EBFC4BDADE2C} Struts
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech September 3 2009 Aircraft Structures The biplane era lasted until the 1930’s Up to this point, the construction materials of choice were Bamboo! Replaced by spruce (light wood with straight grain) Tautened fabric (madapolam) Why this form of construction? Light and inexpensive Truss structure provided resistance to airloads Fabric provided local transfer of air loads into structure Disadvantages? Fabric had zero compression strength Truss structure left little room for passengers/cargo Overall strength is low compared to an equivalent metal structure History of Aircraft Structures
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech
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