Hello All,
In an attempt to educate myself concerning aircraft cooling I have come across two recommendations.
Recommendation A = Have a minimum 0f .35 sq. inches of inlet cooling air per HP.
Recommendation B = Have a minimum of 30% more cooling exit area than inlet area.
Using those recommendations, the math for my 160 HP 0-320 - - -
160 x .35 = 56 sq. inches of cooling inlet area.
56 x 30% = 17 + 56 = 73 sq. inches of cooling exit area
My new nose bowl has slightly over 100 sq. inches of inlet area, enough to cool almost 300 HP - - using the "recommendations."
My question, are these nose bowls built to the worst case scenario and the end user can glass off any un-needed area ?
I'm right at the point of cutting the exhaust outlet in my lower cowling and would like to get it somewhat correct.
Any suggestions / recommendations etc. you guys can give me are greatly appreciated.
Two things to factor in are ;
1) I am going with a wing mounted oil cooler similar to Sam Swift's installation so don't factor it into cowling cooling needs and
2) I am going with an enclosed carbon plenum chamber, not using the standard rubber baffling strip.
Thank you,
In an attempt to educate myself concerning aircraft cooling I have come across two recommendations.
Recommendation A = Have a minimum 0f .35 sq. inches of inlet cooling air per HP.
Recommendation B = Have a minimum of 30% more cooling exit area than inlet area.
Using those recommendations, the math for my 160 HP 0-320 - - -
160 x .35 = 56 sq. inches of cooling inlet area.
56 x 30% = 17 + 56 = 73 sq. inches of cooling exit area
My new nose bowl has slightly over 100 sq. inches of inlet area, enough to cool almost 300 HP - - using the "recommendations."
My question, are these nose bowls built to the worst case scenario and the end user can glass off any un-needed area ?
I'm right at the point of cutting the exhaust outlet in my lower cowling and would like to get it somewhat correct.
Any suggestions / recommendations etc. you guys can give me are greatly appreciated.
Two things to factor in are ;
1) I am going with a wing mounted oil cooler similar to Sam Swift's installation so don't factor it into cowling cooling needs and
2) I am going with an enclosed carbon plenum chamber, not using the standard rubber baffling strip.
Thank you,
