hi all, am a confused-being after trying to solve this really simple question..(adsbygoogle = window.adsbygoogle || []).push({});

somewhere somehow my concepts are just not right ):

Consider an airplane flying with a velocity of 60m/s at a standard altitude of 3km. At a point on the wing, the airflow velocity is 70m/s. Calculate the pressure at this point.

By using p1+1/2(rou)(v1)^2=p2+1/2(rou)(v2)^2 and the standard atmospheric pressure table, the given solution is

7.0121 X 10^4 + 1/2(9.0926X10^(-1))(60^2)/2 = P2 + 9.0926X10^(-1)(70^2)/2

I do not understand why P1 = 7.0121 x 10^4 N (given in the table), where P1 should be the pressure at the point of the flow where velocity is 60m/s.

What is the pressure given in the table referred to as?

I am confused with static/dynamic and total pressure!

Would any kind soul please help?

Thanks alot in advance!

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# Confused with static pressure and total pressure and Bernoulli's eq!

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