PS2 - ENES 100 Introduction to Engineering Design Fall 2010...

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ENES 100 Introduction to Engineering Design Fall 2010 1 of 3 Probl e m S e t #2 A ss ign e d: Sept. 10, 2010 Du e : In class on Sept. 20 (M) or Sept. 21 (Tu) R e ading: Chapter 3: Fluid M ec hani c s and D e s ign Analy s i s Probl e m s : 1. For this problem, you are tasked with performing a study showing the effects of hover height and power on the selection of your levitation fan. Assume the air density to be ȡ =1.2 kg/m 3 , and the acceleration of gravity g=9.8 m/s 2 . Note: Mi c ro s oft Ex ce l c an b e u s e d for thi s a ss ignm e nt (r ec omm e nd e d) , pl e a s e pay c lo s e att e ntion to s ignifi c ant figur e s , round up or down a s n ece ss ary . a. For your baseline parameter, consider a circular hovercraft 0.40 m in diameter and mass of 2.5 kg set to levitate at 1.0mm hover height. Calculate p and Q for the baseline parameters above and hover heights of 2.0mm and 3.0mm. Similarly to vehicle dimension and mass (weight), hover height is also a target parameter set by the designers,
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