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AAE352_Summer_Lec04

AAE352_Summer_Lec04 - Andrew J Ritchey [email protected]

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AAE 352 Summer 2010 4-1 Andrew J. Ritchey [email protected] ARMS B144 765-494-5985 https://engineering.purdue.edu/AAE/Academics/Courses/aae352/2010/summer June 17, 2010

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Understand what we mean by “inertia loads” and “inertia moments” Compute load factors & accelerations “I have yet to see any problem, however complicated, that when looked at in the right way, did not become still more complicated.” – Poul Anderson AAE 352 Summer 2010 4-2 June 17, 2010
Weight Air loads: lift, drag, gusts Landing loads: touchdown, arresting Take-off loads: runway taxi, catapult, assisted (by jet or rocket) take-off Power plant loads: thrust, torque, gyroscopic effects Special loads: towing, refueling, pressurization, cargo, weapons recoil, bomb release, blast effects Large loads occur when the vehicle is accelerating AAE 352 Summer 2010 4-3 June 17, 2010

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AAE 352 Summer 2010 4-4 Jean le Rond d'Alembert (1717-1783) French mathematician, pioneer in the study of differential equations. M M a=F/M Ma F F F=Ma F-Ma=0 Dynamics Pseudo-statics Dynamics June 17, 2010
AAE 352 Summer 2010 4-5 F ma F a a ii i i F m a m FF m F includes all forces including gravity June 17, 2010

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AAE 352 Summer 2010 4-6 F ma F a 0 0 ii i i F m a m FF m  m i a June 17, 2010
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AAE352_Summer_Lec04 - Andrew J Ritchey [email protected]

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