# project3a - Aircraft Structures I project Phase 3 EAS 4200C...

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Aircraft Structures I project Phase 3 EAS 4200C Roberto Barraza 11/14/2010

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UFID 0087-1745 1. Determine the shear flow due to V and T. Shear flow: (eqn. 1) Finding the Moment of inertia: Moment of inertia about z: (eqn. 2) Now, we find for each S section: At: Replacing and into equation 1 we get:
W do the same process for and. The results are as follows: Since passes through the shear center, the twist angle is equal to zero: (eqn. 3) At: At:

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At: At: Replacing those values into equation 3: Solving for and using the value of pounds from phase two: Until now, we have solved for the shear flow due to the shear force. Now, we have to find the shear flow due to the torque T: (eqn. 4)
Where: From phase 2 of this project, we found and. Thus: and Since the sign of the flow due to torque is negative, this means the flow has a counterclockwise direction. We are now able to solve for the total shear flow due to V and T. The actual shear flow can be considered as the superposition of, and: (eqn. 5) Average case Elliptic case

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Superimpose the two shear flows and draw the shear flow diagram on the root
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## This note was uploaded on 08/27/2011 for the course AEROSPACE 3115C taught by Professor Bakcer during the Spring '10 term at University of Florida.

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project3a - Aircraft Structures I project Phase 3 EAS 4200C...

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