Mostly 3D Printed CNC Foam cutter

my1987toyota
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16 Jun 2024 22:53 #303136 by my1987toyota

Replied by my1987toyota on topic Mostly 3D Printed CNC Foam cutter

A 1 to 2 meter long wingspan using a Clark-Y should do well. or longer if you prefer motor gliders.
it would probably depend more on how heavy the whole plane would be or all up weight.
If you're expecting to fly outside on mildly windy days or inside a warehouse .
Some of the indoor warehouse planes can get impressively large.

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my1987toyota
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29 Jun 2024 18:28 #304045 by my1987toyota

Replied by my1987toyota on topic Mostly 3D Printed CNC Foam cutter

Next update

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tommylight
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29 Jun 2024 22:52 #304065 by tommylight

Replied by tommylight on topic Mostly 3D Printed CNC Foam cutter

I have 6S batteries rated at 32AH and 10C weighing in at 3.7KG, so halving that to 3S would be 1.9KG, elctronics and motors and GPS and stuff another KG, plane due to not being able to find anything useful here would have to be styrofoam or that dense pink styro and would need to be covered in fiberglassed resin so probably at least another KG, totaling close to makes no difference 4KG.
I have 2213 motors with 10" two bladed props that can lift 1.1KG each at 4S, probably 0.6KG at 3S ... and writing this the reality kicks in, this might be to heavy for two of those motors ...
What is the weight to lift ratio for a plane that can handle a bit of wind?
-
P.S.
Sorry for being absent a bit lately, had flooding on both shops a few days back so cleaning all day every day for now.

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my1987toyota
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30 Jun 2024 02:24 #304072 by my1987toyota

Replied by my1987toyota on topic Mostly 3D Printed CNC Foam cutter

WOW

4Kg is a lot of weight for a couple 2213 motors and 10" props to get into the air. That said you definitely
wouldn't be worried about the wind. You would probably need the wind to get off the ground. I will admit my
expertise in such matters is limited. If it were me I would probably go with a delta wing or a flying wing design so
it would cut through the air nicely and still give lots of lift for the weight. The old Avro Vulcan bomber would
give a good starting point. Lots of wing area . At that point though one would need to think about what size
servos and or how many to use per control surface. For my stuff I am staying in the under 1Kg region.

For now anyway. LOL

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