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How small rmh to be able to vent thru window akin to air conditioning unit

 
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How small rmh to be able to vent thru window akin to air  conditioning unit?

I've searched the forums and don't see a simular idea or discussion about the pro/cons. Point me to it if it exists please!

The idea is a small rmh that is able to be broken down into pieces to move as our life needs change. I imagine 4 or 5 pieces that are mortared together with the idea that they have fault lines that can be broken apart predictable. ... cleaned up and then reassembled. .

Then also, is it possible that it could be sized that it would be feasible to have a couple inch opening of a window for both the intake and exhaust. ..?

Am I dreaming impossible dreams?

What size is feasible!

Thoughts?  Experiences?

Thankee!

 
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I am not sure size is an issue.
You don't need an outside air intake,and a even a 8" rocket exhaust could pass through most windows with room to spare.
The opening around the exhaust should be closed off with something non-flammable,like sheet metal.

Mass will probably be more of an issue.
Minimum structural changes, minimum foot print, transportable, all point to a relatively small mass.
Since a mass can only be charged so much, there is little point in a large rocket.
I would build a 6" J-tube,or 4" batch box rocket for your application.
Ian told that things get tricky any smaller than that.
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