The Movement Of Air Relative To An Aircraft Wing - Engineering Assignment Help

Assignment Task

Diagram shows the movement of air relative to an aircraft wing. The lines represent the motion of layers of air particles close to the wing. A 
 
At A and B , the layers of air do not cross over each other, but the air at C swirls around and the particles mix together. (a) Write down a word that describes the flow of air at A and B another that represents the movement at C. (b) The uplift on an aeroplane is a consequence of the faster moving air at A having a lower pressure than that at B. For a Boeing 737 cruising at 270 m s'l (Mach 0.8), this pressure difference is about 4 x 103 Pa. Calculate the uplift if the underwing area is 120 rn2' (c) Estimate the mass of the plane and its load. (i) State Poiseuille's law in laminar liquid flow in tube (ii) Explain what is meant by laminar flow and turbulent flow in tube (i) Laminar flow (ii) Turbulent flow (iii) Engine Oil (SAE 10 ), flows steadily through a uniform pipe of length 5.5 cm and internal diameter 1.8 mm, if the flow rate is 5.6 ml min Show that the pressure difference between the ends of the pipe is 4 .0 x 103 Pa. Assume the engine oil (SAE 10 , Temperature 30 °C ) coefficient of viscosity is 200 x 10'3 Pa s , and its density is 900 kg 1113. (4) 

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