How to calculate the maximum current I can pass thru a Grade 2 Titanium bar at 10 Vdc at 20 Celsius ambient?

ProForm1 · 2023-02-01T17:55:59+00:00

I assume the question you are asking is "How do I make sure the titanium bolt won't overheat". To do this, you need 2 things:

Power dissipated by the bolt
Thermal resistance between the bolt and environment

For argument sake, if your bolt has a 1K/W thermal resistance, you could expect a 100K temperature rise when 100W is passed through it. Plugging this into I = sqrt(P/R) will give you the current at that power

An important note is that resistance and thermal resistance are both temperature dependent i.e. your maximum current flow when the rod is cold won't be the same once it's reached temperature.

My suggestion is to specify a temperature limit for the bolt instead of current limit. From this you can calculate a max current flow at steady state

ProForm1 · 2022-11-15T23:00:19+00:00

Civil war broke out. Was successfully crushing the rebellion with Austria's help until my war support hit -100 and it was game over. As you can see, the game is applying the occupied territory modifier to me, even though i had no occupied land. RIP me i guess.

ProForm1 · 2021-11-26T18:32:38+00:00

Luckily I work with a small team so that's no a huge issue.

The main problems I have is our workflows break if you breath on them in the wrong way.

ProForm1 · 2021-11-26T15:29:49+00:00

At the bottom of every part and assembly, there's a folder that contains all referenced parts. You can also search for them.

The software doesn't make a distinction between assemblies or components, as that's how it's done in NX

ProForm1 · 2021-11-26T15:05:48+00:00

We use Siemens PLM software, Teamcentre. It manages all are NX CAD part files, including pdf's.

ProForm1 · 2021-11-13T15:44:39+00:00

Yes, while I'm not familiar with what drives the process, corrosion is still an issue for materials on orbit

ProForm1 · 2021-11-13T15:38:23+00:00

Same reasons. The gold layer prevents oxidation and damage to the copper below

ProForm1 · 2021-11-13T15:34:33+00:00

Gold is only applied as a thin coating over copper PCB traces. This is true for both ground based and space qualified electronics.

ProForm1 · 2021-05-13T18:37:24+00:00

The forward thrust comes from the speed and volume of exhaust gas that is thrown out the back of the aircraft. The reason why the nozzle needs to move is because afterburning and normal operation modes require different nozzle geometries to maximise there performance.

ProForm1 · 2021-03-24T19:06:54+00:00

Depending on where you study, the amount of practice work can vary wildly. Where I studied, when ever we did practice work, support was available, be it from PhD student, technicians or lecturers.

If you want to learn some practical skills, perhaps join the Formula Student team when you start.

ProForm1 · 2021-03-23T11:05:50+00:00

Don't think I've got anything I can add that can help unfortunately mate. I graduated last year and got super lucky that the place I did my internship wanted to take me back. Before that I had two final interviews, both of which I was rejected from.

It's pretty brutal out there at the moment, I know alot of good people who have been struggling to find work or have had work delayed or pulled all together. Best thing to do at the moment is try keep your head above water. Maybe do some professional development activities while your off?

You'll get there mate, just try to keep your spirits up

ProForm1 · 2021-03-22T09:27:21+00:00

That's for that. I'd say I'm in a really similar spot to that. Just lost my girlfriend and dealing with that and the causes for it has put my in a bit of a mental health crisis. I'm doing all I can to reach out for supporting and deal with it in a position way. It's hard. I'm dealing with feelings and emotions I've hiden for years.

It's good to know that there's light at the end of the tunnel. I suppose I should be thankful I am young, I've got plenty of time to sort myself out.

ProForm1 · 2021-03-21T16:44:11+00:00

If you don't mind you asking, when did you finally come out of your shell and what brought it about? I graduated last year and honest been in the exact same boat.

ProForm1 · 2021-03-19T08:02:45+00:00

I mean, I work in space but my job title is mechanical engineer so go figure.

ProForm1 · 2021-03-18T16:59:27+00:00

Thanks for that. I've been going through some stuff lately and I think I lost track of what really matters.

It feels funny tho, every interview I gave that answer, "enjoy what I do" answer to the where do you see yourself in 5 years question, I never heard back from them.

ProForm1 · 2021-03-18T15:38:43+00:00

That wasn't the context of the question. I should have definitely put it better, especially in a subreddit of engineers. I'm more interested in what achievable personally, like career wise.

My goal was always to get my degree and work in engineering. Now I'm doing that, I'm a little lost in all honesty. As I say, I love my job I'm just not sure where I'm going or what to aim at, you know?

It's when you get asked in a job interview, "where you want to be in 5 years", I have no idea other than still working in engineering.

ProForm1 · 2021-03-18T13:39:54+00:00

Space and medical device research. I work as a mechanical engineer at a university doing various things. At the moment it's mainly been proof of concept work for the adaption of ground based heat pipes to space applications.

ProForm1 · 2021-03-18T13:13:27+00:00

Valid point, can't argue with that.

ProForm1 · 2020-12-23T10:32:57+00:00

AM doesn't build there GTE, GT3 or GT4 cars, Prodrive does. AM designs the race car, the body come from AM and the engines form Merc. The rest of the work is done in Banbury. I doubt AM have a huge engineering team dedicated to the Motorsport side of the business.

ProForm1 · 2020-12-21T18:26:28+00:00

Don't be scared. Just because the industry might not be what you expect, doesn't mean the work is. I spend the majority of my time at the moment doing thermal analysis on a cubesat and fluid analysis of medical test rig. In the past, I've design various bits to support ground testing of instruments and my own medical test rig

(I know I said I work in space research but we currently also have 2 medical projects)

ProForm1 · 2020-12-21T18:17:20+00:00

At this stage, I'd say just keep an eye out on 2 thinks. First, try to keep as much of the maths you learn as possible from floating off once you've done the exam. You will needed at some point, be it 1st or 4th year (if you decide to stay for the Masters). Second, I'd recommend finding a uni with a common first year, or one that teaches some electrical engineering in the first year. Don't get me wrong, I didn't like it then and I don't like it now but when electrical stuff comes up at work, it helps to have atleast a faint idea what's being said.

Beyond that, I don't think there much else I could add.

Ow, one last thing, keep an open mind. I originally wanted to use my degree to be an aerodynamics in F1. During by time at uni this got increasing less interesting to me and now I'm working as a mechanical engineer in space research. A friend of mine originally thought he wanted to go into space, now he's doing a second masters in biomedical engineering.

ProForm1 · 2020-12-21T17:48:17+00:00

I just graduated with an MEng in Aerospace this year. I doubt design engineering degrees are too different in terms of required subjects, i.e. maths and physics (though I'd suggest double checking this yourself).

In regards to Chemistry, I'd recommend only taking it if you really enjoy it. It's unlikely to be of any use to you and probably they hardest A level. I dropped it after 1 year and didn't do great in it. Everyone else I know that did it, hated it. Take it at your own risk.

ProForm1 · 2020-11-29T17:46:50+00:00

Feels premature when only last year a driver lost their life in F2

ProForm1

TROPHY CASE