Engine/prop
Allan,
What engine and prop is in your RV-9A test aircraft? You mentioned everything was full foward during the test. For clarification you had your mixture full rich during your climb to 8.5K? If so you were burning a bit of fuel I would imagine.
Typically I reduce my burn rate to ~9 gph and climb out at 115-120 kts to keep my CHT's below 400 degrees in the hot AZ morning temps. If I were to climb out with full mixture I would be buring ~15 gph. Running full rich will help keep the CHT's down a bit but isn't my normal TO procedure once I get to a few thousand feet AGL.
I am trying to figure how effective the cowl flap might be in my RV (IO-360, CS Hartzell BA).
Any addition data points would be helpful.
Allan,
What engine and prop is in your RV-9A test aircraft? You mentioned everything was full foward during the test. For clarification you had your mixture full rich during your climb to 8.5K? If so you were burning a bit of fuel I would imagine.
Typically I reduce my burn rate to ~9 gph and climb out at 115-120 kts to keep my CHT's below 400 degrees in the hot AZ morning temps. If I were to climb out with full mixture I would be buring ~15 gph. Running full rich will help keep the CHT's down a bit but isn't my normal TO procedure once I get to a few thousand feet AGL.
I am trying to figure how effective the cowl flap might be in my RV (IO-360, CS Hartzell BA).
Any addition data points would be helpful.