a)What is the impact of increasing Reynolds number on skin friction and pressure drags over an airfoil? What can be happened for separation in this case? b) What is an adverse pressure gradient and where does it occur on an airfoil (show that on a sketch)? c) Why lift-to-drag ratio is an important parameter for an aircraft?  d)How can changing in altitude affect the aircraft power required, PR? Show that mathematically and graphically?

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A: Introduction In this issue, we will compute the boundary layer thickness, drag friction, and the…

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A: For solution refer below images.

Q: Gas Dynamic Lab: 04: Select the correct answer for the following questions. 1. Lift is the component…

A:

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A: given:

Q: What is an adverse pressure gradient, and where does it occur on an airfoil (Show that on an airfoil…

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A: P=38.967kW

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Q: cool not coPP I in air at 25°C and latm. Use drag coefficient C the spheres fall at their terminal…

A: Re =ρVDμ =VDν  chracterstics of air at Ts+T∞2=300+3502= 325 K  using data book ν =5.12×10-5m2/s k =…

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Q: 04) Define the boundary layer, then find the thickness of boundary layer, shear stress, drag force…

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A: Given: Body surface area =A= 0.4 m ×1.8 m=5.2  m2Drag coefficient =C= 0.5