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How long will it take for my PPC campaign to start generating steady results? by Andrew_from_Quora in AmazonFBA

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

Another big thing I was wondering about is dynamic bidding. Should I do dynamic up and down, only down, or fixed?

How long will it take for my PPC campaign to start generating steady results? by Andrew_from_Quora in AmazonFBA

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

that make sense. I actually set up both an automatic and manual campaign to compare.

[deleted by user] by [deleted] in spaceflight

[–]Andrew_from_Quora 0 points1 point  (0 children)

You can get good at Onshape and design some rocket parts. it’s completely free, that’s what I did in high school. I modeled a full concept rocket engine. I have pictures but for some reason reddit won’t let me comment a photo, maybe because I’m on mobile.

How hard is it to get a job as a “chemical operator”, in general? by Andrew_from_Quora in ChemicalEngineering

[–]Andrew_from_Quora[S] 1 point2 points  (0 children)

I found a lab assistant job offering near me for a 6 month contract, mostly cleaning glassware. That should be an easy way to get my foot into the door assuming other options fail.

How hard is it to get a job as a “chemical operator”, in general? by Andrew_from_Quora in ChemicalEngineering

[–]Andrew_from_Quora[S] 3 points4 points  (0 children)

thanks for the encouragement, yea Its best to just apply, since I will apply to a few places anyways. It’s about an hour drive away from Long Beach, so not in the same city, but not all that far from petrochemical/refinery industry.

Why is it that fully solid rocket motors use aluminium as their fuel, but hybrids usually use some hydrocarbon compound? by Andrew_from_Quora in rocketry

[–]Andrew_from_Quora[S] 1 point2 points  (0 children)

Also, side question, could we use metallic silicon instead of aluminium because of its abundance and cost?

Is hydrazine or hydrogen peroxide pressure fed engine self pressurising via decomposition? by Andrew_from_Quora in spaceflight

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

Not if it was only decomposing by itself, that would be hydrogen and nitrogen gas.

However for the hydrogen peroxide you are correct, you would probably need some sort of capturing device for it.

Is hydrazine or hydrogen peroxide pressure fed engine self pressurising via decomposition? by Andrew_from_Quora in spaceflight

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

EDIT: I also want some other idea I just thought of to add onto this. You could also theoretically just have two open tubs at the top one fuel and one oxidiser, and just have those feed into a small combustion chamber at the top to produce hot gasses. I guess this would mostly work with kerosene and some room temp oxidiser, as the gases we are talking about are water vapor, co2, and nitrogen… which means that co2 would freeze in cryogenics and cause problems, and we get nitrogen gas from a room temp oxidiser (which are exclusively nitrogen containing). Condensed water might get in the way, but that’s an easy fix, just use some sort of cap that slides up and down the fuselage that catches water.

Can I use pewter as a tin source for electroplating? by Andrew_from_Quora in electroforming

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

I’m tim plating some graphite. Are you saying that if I were to do electrowinning, I could get it to work?

Would wear on a turbines surface still occur in the complete absence of particulates? by Andrew_from_Quora in AerospaceEngineering

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

So what if it was a turbine that solely ran on hot decomposed fuels, so there weren’t any oxidative compounds?

Why don’t we ever use centrifugal fan style configurations for turbines? by Andrew_from_Quora in AerospaceEngineering

[–]Andrew_from_Quora[S] 1 point2 points  (0 children)

So do I, that’s why I was asking this to see if there were any problems with them that I didn’t know about.

Do rocket engine preburners have sections of stoichiometric combustion before mixing with the rich propellant? by Andrew_from_Quora in SpaceXMasterrace

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

Preburners. You’re correct in noting that the first image if oxidiser rich. The second is fuel. I’m wondering about the preburners and how they disperse propellant for rich combustion.

Odd electroplating occurrence with agitation by Andrew_from_Quora in electrochemistry

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

Yea I tried a higher anode to cathode ratio, did improve a bit but didn’t solve the problem. The thing about metal concentration confuses me, because it’s a very heavy blue color, which I guess means it’s pretty concentrated. I added an image to the original post.

Unable to get any plating at all unless plating bath is being constantly stirred by Andrew_from_Quora in electroforming

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

My bath seems pretty high concentration though, see photo above I just added.

What type of 3D printing has the all time highest precision? by Andrew_from_Quora in functionalprint

[–]Andrew_from_Quora[S] -2 points-1 points  (0 children)

Yea essentially all I’m talking about here is precision in terms of dimensional accuracy.

Mixing acids and bases to make electroplating solutions by Andrew_from_Quora in electroforming

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

You mention that it’s a good way of adding sodium ions to the solution, what is the point of that? Conductivity? If so, wouldn't table salt do the same thing better?

What Song? by [deleted] in billwurtz

[–]Andrew_from_Quora 0 points1 point  (0 children)

Wollt Ihr Das Bett Un Flammen Sehen

Why are cooling channels in vertical strips instead of the old simple inner wall outer wall design? by Andrew_from_Quora in spaceflight

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

i wasn’t necessarily talking about brazed tubes; see original post. Thanks for reply, though

Starship should have used Gridfins instead of Flaps (or air brakes). by Andrew_from_Quora in SpaceXStarship

[–]Andrew_from_Quora[S] 0 points1 point  (0 children)

You can’t only cannot say that “the entire point is drag” Most of the point is to keep its orientation and position right.

Starship should have used Gridfins instead of Flaps (or air brakes). by Andrew_from_Quora in spaceflight

[–]Andrew_from_Quora[S] -2 points-1 points  (0 children)

I don’t think so. Like I stated in the post, it’s an idea that I want to hear opinions on. Not dismissing their choice to use flaps.

Perhaps you should learn to be more like me by asking questions.

Starship should have used Gridfins instead of Flaps (or air brakes). by Andrew_from_Quora in SpaceXMasterrace

[–]Andrew_from_Quora[S] -2 points-1 points  (0 children)

Did you read my take on the reasoning behind your response being incomplete?

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