6- Floor beams of a transport airplane have been designed using an aluminum alloy containing 4.5 wt% Cu and 1.5 wt% Mg for a total weight of 95000 N. A customer has ordered the airplane but requested that its total weight be reduced by 10 percent for fuel saving purposes. An engineer in the design and analysis department has suggested that the weight saving objective can be accomplished by replacing the current aluminum alloy of the floor beams with another one containing 3 wt% Li and 1 wt % Cu. Is this possible? Answer the question by first determining the weight saving that will take place using the Al-Li alloy. Assume weighted averages of density and use the following densities for the mentioned materials: Al = 2.70 g/cm³ Cu = 8.92 g/cm³ Mg = 1.74 g/cm³ Li = 0.53 g/cm³

6- Floor beams of a transport airplane have been designed using an aluminum alloy containing 4.5 wt% Cu and 1.5 wt% Mg for a total weight of 95000 N. A customer has ordered the airplane but requested that its total weight be reduced by 10 percent for fuel saving purposes. An engineer in the design and analysis department has suggested that the weight saving objective can be accomplished by replacing the current aluminum alloy of the floor beams with another one containing 3 wt% Li and 1 wt % Cu. Is this possible? Answer the question by first determining the weight saving that will take place using the Al-Li alloy. Assume weighted averages of density and use the following densities for the mentioned materials: Al = 2.70 g/cm³ Cu = 8.92 g/cm³ Mg = 1.74 g/cm³ Li = 0.53 g/cm³

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

6- Floor beams of a transport airplane have been designed using an aluminum alloy containing 4.5
wt% Cu and 1.5 wt% Mg for a total weight of 95000 N. A customer has ordered the airplane but
requested that its total weight be reduced by 10 percent for fuel saving purposes. An engineer in
the design and analysis department has suggested that the weight saving objective can be
accomplished by replacing the current aluminum alloy of the floor beams with another one
containing 3 wt% Li and 1 wt% Cu. Is this possible? Answer the question by first determining
the weight saving that will take place using the Al-Li alloy. Assume weighted averages of density
and use the following densities for the mentioned materials:
Al = 2.70 g/cm³
Cu = 8.92 g/cm³
Mg = 1.74 g/cm³
Li = 0.53 g/cm³

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