+SkippyBing Posted January 16, 2007 Posted January 16, 2007 I'm just working on a DATA.ini for a Fairey Swordfish and I'm trying to figure out some of the variables in the there. MomentOfInertia - what does this represent the engine, the prop or the whole system. And er.. what units is it in? MinManifoldPressure - Again what units, and am I right in thinking for a normally aspirated engine this should be a negative number? MaxManifoldPressure - Can this be positive in a normally aspirated engine or only turbocharged ones? Finally is there a list anywhere of all the piston engine and prop variables anywhere? I don't as yet have First Eagles so I can't look through the aircraft ini files there, but if anyone knows which DLL they hide in I can have a poke through and strip them all out. Quote
Southernap Posted January 17, 2007 Posted January 17, 2007 Skippy Manifold pressure in combustion engines (which a piston or rotary is) is usually measured against earth's atmopshere and in Standard English measurements (lb,ft,in, etc) it is measured in inches of mercury or (inHg or Hg). I don't know how to tell the difference between max or min, but this little posting might help. Quote
Guest capun Posted January 17, 2007 Posted January 17, 2007 Skippy Do you have Charles's document? It's a compendium of knowledge gleaned from posts, TK's feedback and Charles's own stuff. It pretty much goes over the Data ini variables, It's at his site Quote
+SkippyBing Posted January 18, 2007 Author Posted January 18, 2007 Southern, thanks for the link that explains it perfectly, I was confusing absolute and relative pressures. Capun, thanks for that, I actually had an older copy from a few years back, the latest one filled in a lot of holes. Quote
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