hevansrv7a
Well Known Member
OK, I'm a little confused again.
* MAP is a function of pressure altitude.
* Available oxygen is a function of density altitude.
* Various charts, GRT %PWR calculation use MAP and a correction for "altitude", which kind not stated.
So, does this mean that for a given combo of MAP and RPM at a given altitude that the actual power can vary as much as the difference between pressure altitude and density altitude?
If so, this means I was right that %PWR is a very rough concept and that when near 75%, the magic number for leaning, one must excercise care.
Comments would be welcome!
* MAP is a function of pressure altitude.
* Available oxygen is a function of density altitude.
* Various charts, GRT %PWR calculation use MAP and a correction for "altitude", which kind not stated.
So, does this mean that for a given combo of MAP and RPM at a given altitude that the actual power can vary as much as the difference between pressure altitude and density altitude?
If so, this means I was right that %PWR is a very rough concept and that when near 75%, the magic number for leaning, one must excercise care.
Comments would be welcome!