HOMEWORK 2-Process Selection.pdf

HOMEWORK 2-Process Selection.pdf - [EMS 180 HOMEWORK 2016...

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[EMS 180 – HOMEWORK 2016 HOMEWORK 2 Exercise 2.1 The elevator control quadrant is part of the control system for the wing- elevator of a commercial aircraft. It is to be made of a light alloy (aluminum or magnesium). It weighs about 5 kg. The minimum section thickness is 5 mm, and – apart from the bearing surfaces – the requirements on surface finish and precision are not strict: surface finish 10 μ m and precision 0.5 mm. The bearing surfaces require a surface finish 1 μ m and a precision 0.05 mm. A production run of 100 – 200 is planned. (a) Itemize the function and constraints, leave the objective blank and enter ‘‘choice of process’’ for the free variable. (b)
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