Where in the CERM?

[Cheese]

Anybody know where in the CERM I can find the atmospheric pressure (head or psi) of the air (atmosphere) for different elevations.

Use would include the 1st term in the NPSHA equation (18.30a).

Lindeburg keeps pulling this data from thin air.

Thanks,

Cheese

 

[owillis28]

Cheese,

I think that Appendix 18.A should answer your question. I remember trying to find an equation relating the pressure and altitude. Took me a couple days before I finally found my answer.

Hope this is correct.

Owillis

 

[Guest]

I don't have my CERM with me, but I noted that Appendix 18.A is Internation Standard Atmosphere which sounds correct. If it looks anything like this table International Standard Atmosphere Table then it is just a matter of LINEAR INTERPOLATION between the two layers of the atmosphere of interest.

JR

 

[Cheese]

Thats the one.... thanks

Cheese

 

[DVINNY]

hmmm.

If 14.6 psia doesn't work for me, then I move onto the next problem. LOL.