aero midterm

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27 Terms

1
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P0

10^5

2
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Rho

1.23

3
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T

288

4
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R

287

5
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V(nu)

1.5×10^-5

6
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AR

b/c

7
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Equation of State (Ideal Gas Law)

p=(rho)(R)T

8
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Hydrostatic Equation

dp=-(rho)(g)dh

9
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Euler’s Equation

dp=-(rho)u*du

10
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Re

UC/nu = (rho)(u)*c/mu

11
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Dynamic Pressure

q= ½ (rho)u²

12
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Continuity

(rho)AU=(rho)AU

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Coefficient of lift

cl=2pi(alpha)=dcl/dalpha

14
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Alpha_eff

a_eff =alpha-alpha_i

15
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2D lift to 3D lift slope

c_l_a * [AR/(AR+2)] cla=2pia

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Coefficient of Drag

C_D= c_d + C_D_i

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Coefficient of Induced Drag

C_d_i = cl²/(pi*e*AR)

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Lift

½(rho)(u²)S(C_L)

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Drag

½ (rho)(u²)(S)(C_D)

20
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Slope of Cl

2pi*alpha

21
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Re_cr

4.0×10^5

22
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Coeff of friction

C_f_x= tao_w/q

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Tao_w

Sheer stress at the Mu*dy/du @y=2

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cl

cl=L’/qsc

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L’

Lift/b

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CL

Cl=L/qs

27
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A

A