Louvers in floor

[Nashpdman]

Anyone put louvers in the bottom of their tail? I want to add two of these (only one in the pic) just behind the F1008 bulkhead in the floor. They will provide an exit for the air flowing through the inboard mounted A/C condenser. The actual cut will be 3”x 10” then a doubler. Just thought I’d ask if anyone has any experience with this type of modification.

Thanks!

 

[rocketbob]

Air will likely flow inward at that position. Most certified aircraft that have external air outlets have them below the cabin area where the largest deltaP is near the largest circumference profile of the fuselage. My Comanche has a 3" duct from the rear bulkhead air outlet to a forward location a few feet away below the right rear passenger seat. Beech outlets are at a similar location on top of the fuselage.

 

[Nashpdman]

Air will likely flow inward at that position. Most certified aircraft that have external air outlets have them below the cabin area where the largest deltaP is near the largest circumference profile of the fuselage. My Comanche has a 3" duct from the rear bulkhead air outlet to a forward location a few feet away below the right rear passenger seat. Beech outlets are at a similar location on top of the fuselage.

Thanks for the feedback! I'll have naca vents in the side of the fuse just behind the baggage compartment, just in front of the condenser. Would this change the air flow? I'd like to draw air in the naca vents and out the floor louvers.

 

[BobTurner]

Thanks for the feedback! I'll have naca vents in the side of the fuse just behind the baggage compartment, just in front of the condenser. Would this change the air flow? I'd like to draw air in the naca vents and out the floor louvers.

As RocketBob said, the cabin tends to be surrounded by low pressure air, and if there leaks around the door seals, you’ll draw air forward. At a minimum, seal the aft baggage bulkhead to the frame where air will leak thru the corrigations.