AE350_Intro1 - AIRCRAFT STRUCTURES Ratan Jha (CAMP 364,...

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AIRCRAFT STRUCTURES Ratan Jha (CAMP 364, 268-7686, [email protected]) www.clarkson.edu/~ratan Structural safety with minimum weight is the major criterion for the design of aircraft structures, which comprise thin load bearing skins, frames, stiffeners, spars, made of light weight, high strength, high stiffness materials. AE/ME350 Jha Intro-1
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REQUIREMENTS FOR AIRCRAFT STRUCTURAL DESIGN High Strength - Maximum expected load (l imit load ) must not exceed material failure stress. Low Weight - Minimum structural weight for best performance (very important difference compared to other types of structures). Higher structural weight requires larger wing area and larger engine thrust, which further increase weight. Higher weight leads to higher fuel consumption and lower range. High Stiffness - Stiffness determines force - deflection (stress - strain) relationship (Spring: Kx = f; K = AE/L for rod, where E = Young’s modulus, A= cross sectional area, L = length) Large Fatigue Life
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This note was uploaded on 09/30/2010 for the course AE AE 350 taught by Professor Rha during the Fall '10 term at Clarkson University .

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AE350_Intro1 - AIRCRAFT STRUCTURES Ratan Jha (CAMP 364,...

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