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Hi Guys,
Attached is a line drawing of a side view cowling with an outlet duct in the
bottom. It is lettered counterclockwise from the lower left corner A
through G.
BC is a movable cowl flap, DE is the lower edge of the fuselage, and EF is
the firewall.
If we want to open the exit area, we can :
1. increase the angle downward on the flap, but this will increase drag. 2.
move BC forward, keeping the angle the same, but increasing the distance
from point C to point D.
Glastar recommends a 20 degree, 5"x20" cowl flap with about a 3"X20"
opening. Dis ain't enough...:-)
What negative effects can be expected from plan #2? Will there be
turbulence up into the firewall area? Will even more drag be induced?
Any ideas appreciated, (well, almost any..)
Tommy James<><
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