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Elodia [21]
3 years ago
12

As a means of preventing ice formation on the wings of a small, private aircraft, it is proposed that electric resistance heatin

g elements be installed within the wings. To determine representative power requirements, consider nominal flight conditions for which the plane moves at 100 m/s in air that is at a temperature of -23 degree C. If the characteristic length of the airfoil is L = 2 m and wind tunnel measurements indicate an average friction coefficient of of C_f = 0.0025 for the nominal conditions, what is the average heat flux needed to maintain a surface temperature of T_s = 5 degree C?

Engineering
1 answer:
DIA [1.3K]3 years ago
7 0

Answer:

Average heat flux=3729.82 W/m^{2}

Explanation:

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Lina20 [59]

Answer:

i think C

Explanation:

if not really sorry

3 0
3 years ago
why can planes fly but boats cant and why can boats float but not planes and saying planes fly because of the wind or air is not
Aleksandr-060686 [28]

Answer:

Planes can fly because they have wings and jet turbines and boats cant they need wings and planes cant float because there is to much weight

4 0
3 years ago
Read 2 more answers
A distillation column at 101 kPa is used to separate 350 kmol/h of a bubble point mixture of toluene and benzene into an overhea
AURORKA [14]

Answer:

A)

  D = 158.42 kmol/h

  B =  191.578 kmol/h

B) Rmin = 1.3095

Explanation:

<u>a) Determine the distillate and bottoms flow rates ( D and B ) </u>

F = D + B ----- ( 1 )

<em>Given data :</em>

F = 350 kmol/j

Xf = 0.45 mole

yD ( distillate comp ) = 0.97

yB ( bottom comp ) = 0.02

back to equation 1

350(0.45) = 0.97 D + 0.02 B  ----- ( 2 )

where; B = F - D

Equation 2 becomes

350( 0.45 ) = 0.97 D + 0.02 ( 350 - D )  ------ 3

solving equation 3

D = 158.42 kmol/h

resolving equation 2

B = 191.578 kmol/h

<u>B) Determine the minimum reflux ratio Rmin</u>

The minimum reflux ratio occurs when the enriching line meets the q line in the VLE curve

first we calculate the value of the enriching line

Y =( Rm / R + 1 m ) x   +  ( 0.97 / Rm + 1 )

q - line ;  y =  ( 9 / 9-1 ) x -  xf/9-1

therefore ; x = 0.45

Finally Rmin

=  (( 0.97 / (Rm + 1 ))  = 0.42

0.42 ( Rm + 1 ) = 0.97

∴ Rmin = 1.3095

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8 0
3 years ago
Select the correct answer.
bonufazy [111]

Answer:

OD.

plate

Explanation:

3 0
3 years ago
Florida's progressive DUI laws take ______<br> into account.
xz_007 [3.2K]

Answer:

Permanent felony conviction on your criminal record.

Financial restitution if DUI involves an accident, property damage or personal injury

Up to 50 hours community service or fee of $10 per hour of service.

Minimum fine of upto $1000 or $2000, that is if your blood alcohol level was 0.15%  or more than this, or you were driving with a minor in the vehicle.

Imprisonment of upto 9 months, if the blood alcohol level was over 0.15% or idf the DUI  resulted in ana accident or crash, jail time is increased to one year.

Mandatory imprisonment for not less than 10 days if your second DUI conviction occurs within 5 years of the date of the prior DUI conviction.

180 days to one year probation.

Maximum of 5 years driver's license revocation.

Up to 30 days impoundment of vehicle.

Ignition interlock device.

Criminal record stating adjudication of guilt.

Explanation:

8 0
3 years ago
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