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/sci/ - Science & Math

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2811631 No.2811631 [Reply] [Original]

We're creating a model rocket in physics.

There is a question on this sheet that says
> What type of paint is best to use?

I never even knew type of paint affected (drag or aerodynamics?) or maybe none. Does the paint simply affect the mass of the rocket?

Anyone know if there is a pro/con in a type of paint (water based, oil based, etc) being used on a model rocket that will use an engine/parachute to take off and land? If so, which paint is best?

>> No.2811651

I'd say oil based or something for sure.

Water-based objects typically degrade under ultraviolet light. Ink definitely does, and I'm pretty sure paints do.

Possibly oil because it would also be electrically inert, resulting in less possible static charge as the object collides with any dusts or stuff.

>> No.2811657

Best paint is parkerization. You'll probably kill yourself trying though.

>> No.2811664

the emissivity and absorptivity matter for actual spacecraft, depending on the mission and payload. the effects on drag are pretty unimportant. i'd say the weight probably is as well but for a model rocket i don't know...

>> No.2811671

Red paint is 2.3% faster than all other paints.

>> No.2811684
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2811684

Use your own hand cranked blend it might enhance your rocket

>> No.2811698
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2811698

USE THE MAGIC!!!! TASTE THE RAINBOW!!!!!

>> No.2811710

rule 34 on spacecrafts

>> No.2811720
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2811720

It's so simple, kill the batman

>> No.2812658

bamp

>> No.2812667
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2812667

>mfw special paint is used to protect the rocket from the enviroment once in space.

>> No.2812682

I think you should choose reflective paint to blind your mo-fo teachers.

>> No.2812694

Well, the main purpose of paint is simply to smooth the surface, make it look pretty, and (if it's made of metal) protect the rocket from corrosion.

You'd want to have as thin a layer as possible to reduce weight. Also, if you have blobs /droplets of paint, that could add a *tiny* amount of drag to your rocket (although this would probably be insignificant). You'd also want to make sure your paint job is very smooth to reduce friction drag as much as possible, although again this effect is probably pretty minor...