Answer:
The lift coefficient is 0.3192 while that of the moment about the leading edge is-0.1306.
Explanation:
The Upper Surface Cp is given as
![Cp_u=-0.8 *0.6 +0.1 \int\limits^1_{0.6} \, dx =-0.8*0.6+0.4*0.1](https://tex.z-dn.net/?f=Cp_u%3D-0.8%20%2A0.6%20%2B0.1%20%5Cint%5Climits%5E1_%7B0.6%7D%20%5C%2C%20dx%20%3D-0.8%2A0.6%2B0.4%2A0.1)
The Lower Surface Cp is given as
![Cp_l=-0.4 *0.6 +0.1 \int\limits^1_{0.6} \, dx =-0.4*0.6+0.4*0.1](https://tex.z-dn.net/?f=Cp_l%3D-0.4%20%2A0.6%20%2B0.1%20%5Cint%5Climits%5E1_%7B0.6%7D%20%5C%2C%20dx%20%3D-0.4%2A0.6%2B0.4%2A0.1)
The difference of the Cp over the airfoil is given as
![\Delta Cp=Cp_l-Cp_u\\\Delta Cp=-0.4*0.6+0.4*0.1-(-0.8*0.6-0.4*0.1)\\\Delta Cp=-0.4*0.6+0.4*0.1+0.8*0.6+0.4*0.1\\\Delta Cp=0.4*0.6+0.4*0.2\\\Delta Cp=0.32](https://tex.z-dn.net/?f=%5CDelta%20Cp%3DCp_l-Cp_u%5C%5C%5CDelta%20Cp%3D-0.4%2A0.6%2B0.4%2A0.1-%28-0.8%2A0.6-0.4%2A0.1%29%5C%5C%5CDelta%20Cp%3D-0.4%2A0.6%2B0.4%2A0.1%2B0.8%2A0.6%2B0.4%2A0.1%5C%5C%5CDelta%20Cp%3D0.4%2A0.6%2B0.4%2A0.2%5C%5C%5CDelta%20Cp%3D0.32)
Now the Lift Coefficient is given as
![C_L=\Delta C_p cos(\alpha_i)\\C_L=0.32\times cos(4*\frac{\pi}{180})\\C_L=0.3192](https://tex.z-dn.net/?f=C_L%3D%5CDelta%20C_p%20cos%28%5Calpha_i%29%5C%5CC_L%3D0.32%5Ctimes%20cos%284%2A%5Cfrac%7B%5Cpi%7D%7B180%7D%29%5C%5CC_L%3D0.3192)
Now the coefficient of moment about the leading edge is given as
![C_M=-0.3*0.4*0.6-(0.6+\dfrac{0.4}{3})*0.2*0.4\\C_M=-0.1306](https://tex.z-dn.net/?f=C_M%3D-0.3%2A0.4%2A0.6-%280.6%2B%5Cdfrac%7B0.4%7D%7B3%7D%29%2A0.2%2A0.4%5C%5CC_M%3D-0.1306)
So the lift coefficient is 0.3192 while that of the moment about the leading edge is-0.1306.
Answer:
A) Cost
Explanation:
Chain drives have low maintenance cost.
Timber frame construction uses timber studs and rails, together with a structural sheathing board, to form a structural frame that transmits all vertical and horizontal loads to the foundations.
<u>Software Development and Client Needs</u>
In Incremental method of software development customers who do not have a basic idea of the development process are being carried along on like other methods that will relegate them to the background until a product is ready.
With this model and structure in place, when softwares/ products are built from several stages e.g prototype, testing, and when new features are added customers are always carried along with their valuable feedback and suggested greatly considered to achieve the customers satisfactions
This model will work well for the customers/clients who does not have a clear idea on the systems needed for their operations.
In summary the incremental model combines features from the waterfall and prototyping model.
For more information on soft ware development process kindly visit
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The heat transferred to and the work produced by the steam during this process is 13781.618 kJ/kg
<h3>
How to calcultae the heat?</h3>
The Net Change in Enthalpy will be:
= m ( h2 - h1 ) = 11.216 ( 1755.405 - 566.78 ) = 13331.618 kJ/kg
Work Done (Area Under PV curve) = 1/2 x (P1 + P2) x ( V1 - V2)
= 1/2 x ( 75 + 225) x (5 - 2)
W = 450 KJ
From the First Law of Thermodynamics, Q = U + W
So, Heat Transfer = Change in Internal Energy + Work Done
= 13331.618 + 450
Q = 13781.618 kJ/kg
Learn more about heat on:
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