About the Cover Page

The cover page shows the solid model of an airplane torque tube in computer that is one of the three similar tubes located in the front leading edge of the wing, three on each side. These torques tubes were re-engineered for enhanced product reliability and reduced manufacturing lead-time. The problems are twofold. First, the current magnesium tubes designed decades ago suffer poor corrosion-resistance, requiring frequent repairs. Second, magnesium tubes are made by casting, which is extremely uneconomical when used for producing a very small quantity required for the remaining aircraft fleet. Lead-times were excessive and the cost was extremely high for acquiring the tubes. Involving the original equipment manufacturer (OEM) ...

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