I'm wondering about what the air will do around the nose gear slot on my BD-4 flat bottomed cowl.
The cowl bottom has two openings for the exhaust pipes similar to those on a Cirrus and with the pipes inside I'm wondering if there is adequate area for the heated air from the engine to exit. The nose slot is 16 X 2 (32 square inches) BUT recent conversation suggests that this slot may let air IN more than out, pressurizing the lower cowl to some degree and thereby lessening the pressure differential from the upper cowl to the lower. Engine is an IO-470.
Thoughts on whether the nose gear slot is an air EXIT or ENTRANCE on a flat bottom cowl?
The cowl bottom has two openings for the exhaust pipes similar to those on a Cirrus and with the pipes inside I'm wondering if there is adequate area for the heated air from the engine to exit. The nose slot is 16 X 2 (32 square inches) BUT recent conversation suggests that this slot may let air IN more than out, pressurizing the lower cowl to some degree and thereby lessening the pressure differential from the upper cowl to the lower. Engine is an IO-470.
Thoughts on whether the nose gear slot is an air EXIT or ENTRANCE on a flat bottom cowl?
