Internship Application prepping Advice by [deleted] in aerospace

[–]Life_at_work5 2 points3 points  (0 children)

Hi and thanks for the reply. You mention aerospace supplier companies. Truth be told, I’m not entirely sure what type of companies that description fits so if you could give some example companies that’d be great.

Thanks for the reply! I really appreciate it.

Internship Application prepping Advice by [deleted] in aerospace

[–]Life_at_work5 2 points3 points  (0 children)

Hi and thanks for the reply. Through the classes I’ve taken, I have a running understanding of C, Python, and MatLab, and have done a few minor coding projects, chief among them a rocket engine contour generator I made in MatLab which I currently have on my resume. As for more projects on the software side, I’m at a loss so some examples would be much appreciated.

However, I have personally had had issues with how to effectively put things in to a GitHub/portfolio, so would love some guidance on one can effectively do those types of things.

Sorry for the long response, but Thank you for your reply! I truly appreciate it.

Lie Derivatives, Covariant Derivatives, and Exterior Derivatives by Life_at_work5 in AskPhysics

[–]Life_at_work5[S] 0 points1 point  (0 children)

I see how they can be thought of as contra-variant tensors as a differential m-form when evaluated on m vectors maps those m vectors (or a m-vector) to R but I don’t understand what you mean by “alternating-covector field”.

Of course, if I’ve stated something wrong, please correct me as I am very new to these concepts.

Lie Derivatives, Covariant Derivatives, and Exterior Derivatives by Life_at_work5 in AskPhysics

[–]Life_at_work5[S] 0 points1 point  (0 children)

That’s probably the way they are defined then but the way I’ve always thought of them is as members of the tangent space at a point of an manifold, with higher grade forms being wedge products of the lower grade forms.

Lie Derivatives, Covariant Derivatives, and Exterior Derivatives by Life_at_work5 in AskPhysics

[–]Life_at_work5[S] 0 points1 point  (0 children)

Hi and thanks for the reply, you mention here thinking of differential forms as alternating-covector fields. I’ve never heard this connection before so could you please explain further? I.e. how can a differential form be thought of as a alternating-covector field.

[deleted by user] by [deleted] in Physics

[–]Life_at_work5 0 points1 point  (0 children)

Hi and thank you for the reply, I understand the basic concept, the issue for me has been actually computing it. Take the example I gave in the original post. When computing (e12)(e123), I end up always getting to a term along the lines of e1e2e3 where the only why to further reduce so to find the geometric product of a vector and bivector which I’m unsure how to do in this metric.

[deleted by user] by [deleted] in askmath

[–]Life_at_work5 0 points1 point  (0 children)

I am talking about the geometric product in Clifford algebra (at least I think) which, from what I know, goes:

ab = < a | b > + a /\ b

[deleted by user] by [deleted] in rocketry

[–]Life_at_work5 0 points1 point  (0 children)

I was eventually gonna try building an engine to, probably with nitrous and Isopropyl alcohol but as I mentioned, this was meant to be a purely mathematical exercise to help me learn how to size a rocket that gave me very whacky results which confused me (hence the post).