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lighter than air idea.

5,514 Verdnan  8.6 years ago

You all know how we can add dead weight and buoyancy to a fuselage. Well I'm thinking what if we had a slidder that reduced weight? Not by a lot though, but just enough to where we could make realistic airships. You see there would have to be a lot of the blocks to make it work. That way no one could abuse it and make weightless planes or something.

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    @Flakmagnet Okay i would love to have this "part" thing that sounds nice.

    8.3 years ago
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    5,023 Flakmagnet

    @Gravemind123 and please remember this is from three months ago so I'll have to find or make a new one

    8.3 years ago
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    5,023 Flakmagnet

    @Gravemind123 how about I just send you the part

    8.3 years ago
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    @Flakmagnet Please tell me how you did this oh and could you put it on youtube I MUST see it for myself.

    8.3 years ago
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    5,023 Flakmagnet

    @Gravemind123 its not a plane but a part that can be added to any plane

    8.3 years ago
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    @Squirrel No helium in most airships has little to no pressure well.. some. That way it won't rupture the gas bags it lies in as to much pressure might burst them.

    8.3 years ago
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    @Flakmagnet Um what's the name of your physics resistant plane. I wish to look into it ;)

    8.3 years ago
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    Mod Squirrel

    @Skua. Just to throw a spanner in the works. Isn't the helium in airships pressurised?

    8.6 years ago
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    26.2k Skua

    @Verdnan ahh sorry, I didn't realise you meant that they were too heavy for buoyancy to work. A single block is actually a 0.5 m cube, so that's a volume of 0.125 m^3.

    • density of air = 1.225 kgm^-1

    • mass of 0.5 m cube of air = 0.125 * 1.225 = 0.153125 kg

    • weight of 0.5m cube of air = 1.5 N = 0.33 lb, for any imperial users here


    • density of helium = 0.164 kgm^-1

    • mass of 0.5m cube of helium = 0.0205 kg

    • weight of 0.5m cube of helium = 0.2 N = 0.045 lb


    So yeah, assuming a totally weightless structure, we'd still only get about 0.3 lb of lift from that buoyancy - obviously not even close to enough to lift the 22 lb structure, so you're totally right. However, I would imagine that what the game is actually doing is saying "this block creates this amount of upward force when y <= 0, the water's surface", rather than actually simulating buoyancy with displacement and everything. The only difference here would be saying "this block always creates this amount of upward force"

    8.6 years ago
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    5,023 Flakmagnet

    @Verdnan I have a block that makes any thing -2000000 pounds its awesome cause it cane make anything glitch and if you start from one of the approaches the plane will ignore all physics and fall to the ground at emence speed then contiues to fall through the world!

    8.6 years ago
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    5,514 Verdnan

    I did some light math and a 5x5x5 fuselage and a normal cockpit weigh 1796lbs. And I think if the fuselage was filled with hydrogen, that gas could only lift 313lb. Assuming 1 block = 1 cubic meter and 1000 cu ft lifts 71lb. Someone correct me if I'm wrong. @Skua

    8.6 years ago
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    26.2k Skua

    @Verdnan really? You mean the ordinary fuselage sections and so on? I tend to find that most of the weight in my aircraft comes from fuel and engines.

    8.6 years ago
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    5,514 Verdnan

    I think the current blocks are to heavy. @Skua

    8.6 years ago
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    26.2k Skua

    @Verdnan would we? I figured it would work just like the current buoyancy slider for fuselage sections - just have a little button for "Buoyancy: Air/Water" or something. That being said, I'm not a dev, so I have absolutely no idea how difficult it would be to make something like that.

    8.6 years ago
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    5,514 Verdnan

    I was afraid that might add to much complexity. We would need an entirely new block in that case. The game allows for helicopters but not the laws governing them. @Skua

    8.6 years ago
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    26.2k Skua

    Rather than reducing weight, it should probably provide buoyancy in air - that way it won't reduce your mass (so it won't improve acceleration, handling etc) but will still allow for lighter-than-air vehicles.

    8.6 years ago