Quote:
Originally Posted by TDIwyse
My understanding (will have to look for references though) is that turbo engines are still impacted by DA, though not as much as natural aspirated ones. The turbo has to work harder to make the same peak boost numbers, which means it could (engine/design dependent) be going outside its efficiency range.
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Here's a couple aviation based examples showing the difference between natural aspirated and turbo engines and DA impact.
http://yakimawpa.files.wordpress.com...ce-handout.pdf
https://www.mountaincanyonflying.com/DA%20Workbook.pdf
These are generalized and may not apply to our engines, but they show for every 1000' change natural aspirated engines loosing ~3% power and turbo engines loosing ~2.3%.