HW4_due_sept26

# HW4_due_sept26 - AAE333 Fall 2011 Homework 4 Due: Monday...

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AAE333 Fall 2011 Homework 4 Due: Monday Sept 26 1) An airfoil with a 5cm long chord is put into a flow with a free stream velocity of 2cm/sec. A wake survey is performed that gives a velocity distribution 15cm downstream from the trailing edge of the airfoil The rake has 21 probes spaced 1mm apart. The velocity readings in the wake are (in cm/s, with 1% accuracy): . 2 00 . 2 00 . 2 00 . 2 00 . 2 00 . 2 00 . 1 98 . 1 93 . 1 82 . 1 67 . 1 60 . 1 67 . 1 82 . 1 93 . 1 98 . 2 00 . 2 00 . 2 00 . 2 00 . 2 00 . 2 00 Use the conservation of momentum principle ( ) , to deduce the drag per unit span on the airfoil and the drag . coefficient

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AAE333 Fall 2011 2) A stream of water 1cm deep and 3cm wide is initially moving at 10m/s in the x direction. It impinges on a circular arc diverter which deflects the stream through a 45deg angle (so it comes off the wall moving along the line y=x). Ignore gravity. You may presume that the stream depth and width after deflection is the same as upstream from the wall. i.
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## HW4_due_sept26 - AAE333 Fall 2011 Homework 4 Due: Monday...

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