3D鱼雷玩具模型

Torpedo Toy

2023-08-06 20:14:02

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Summary

Scaled Up

Had enough fun with the smaller ones for "the boys" that I decided to make a full-size version for the "grups". Works best in about should-deep water, use your index finger to push the torpedo.
Videos coming as soon as my new fancy-pants phone arrives.

New Profile:

Slightly more nose-heavy than the smaller toy, and the twist of the fins is reversed to allow a right-handed American football-style throw (also: "curveball" technique works). The nose-heavy nature means it doesn't tend upward as much, leading to no hydrodynamic stalling and thus a more continuous glide. (Old ones would "stall & sink" as opposed to "slowing and gliding")

New Density:

After reviewing my extremely suspect buoyancy calcs, I re-examined things and realized that by simply making it larger, I would increase the water fraction and approach neutral buoyancy the easy way (by being mostly water). As a result this one is about 3.5% negatively buoyant, as opposed to 4-5% for the scaled ones, it doesn't seem like a lot, but the practical difference is large.

New Range

All these changes means the ultimate range of the torpedo is at least double what the smaller versions offered. Less good for the kids, better for the adults.

Check Out My Cool Collection of Cups, Mugs, and More!

There's even some freebies on my site, here at WeCanDrinkTogether.com. No account required, you can checkout as a guest or login with your google account. demo video link: https://youtu.be/u9iL7cbuVGM

Print Settings

Printer brand:
Creality
Printer:
CR-10S
Rafts:
Doesn't Matter
Supports:
Doesn't Matter
Resolution:
0.16
Infill:
100%
Filament brand:
Spool3D
Filament color:
Orange 021-C
Filament material:
PLA
Notes:
The Pantone Orange Colour provides really great visibility, especially from above the water's surface.