You are designing a lower wing skin for a new aircraft. Your purchasing department has asked you to limit your choices to 3 aluminums; 2024-T351, 7050-T7451, and 6061-T451, as they already purchase these in quantity and get good prices from Alcoa. As we will machine to final thicknesses, use plate material. The loads are primarily in tension but some load cases do have compression at about 2/3 the level of the tension. Operating temperature of the aircraft is from −65∘ to 130∘ F. Fatigue is also a concern. Compare and contrast the materials. Based on that which one do you chose and why? You can find descriptions in MMPDS in your reference library.