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Engine Cycle Final Review!

🕑 Added 2022-04-25 21:57:05 +0000 UTC

Comments

Timothy-Douglas Alvey

“Couldn’t find the address” with Safari and the .io App wanted my Apple Password and would not accept a fingerprint (No thanks). You’ve probably pulled this one down by now, but it’s one I missed and hoped this shortcut could save me from surfing.

RLB

What an awesome video! Not that I expected anything less though :) I am preparing a lecture for our local astronomy club on the exact same topic. My animations are just a tad less impressive :P

Jack Ellis

This is an amazingly well organized and produced video that should be used as an educational video for budding rocket engineers. I agree with Daniel Miner. Your production quality is professional quality suitable for commercial use and sale.

I'm going to somewhat eat my words on hydrogen gas pressurization. It is being done, and the technical problems are being worked out. So maybe hydrogen could be used. 670 bar = around 10,000 psi. Technology improves. https://www.energy.gov/eere/fuelcells/high-pressure-hydrogen-tank-testing

The problem with hydrogen is that it acts as a Lewis acid, so it wants to accept electrons. That means it eats metals, and even glass. Hydrogen is also so small that it will leak through any seal. Hydrogen is all but impossible to pressurize. It can be stored in tanks in liquid form, and as long as it is liquid it is minimally corrosive. On top of that, there are pretty high boil-off losses, and LH2 temp is 20-30 Kelvin. Liquid methane (methalox) is liquid at 91-112 K. This is why methalox is preferred over LH2. It's roughly the temperature of liquid oxygen. LOX. Hydrogen and metals. https://www.azom.com/article.aspx?ArticleID=104

Jack Ellis

The "why don’t rocket engines melt" does not work. error message says the video is not supported.??

Tim, Great video. Thanks for all you do.

Frame.io stopped working on my phone. At 3:00 - PRINCIPLES not PRINCIPALS. Mnemonic: "PrincipLE = "Law of Engineering", PrincipAL = "ALmighty".

It's amazing and impressive how much your production quality has improved over the years. Thanks Tim!

Excellent video as always

Michael S Wilhelm

The animations are spectacular. I found myself pausing on each one to follow through with the descriptions and they always added to understanding. Nice work!

Oh dang sorry I missed it! My brain must’ve been distracted trying to think through those awesome diagrams 😂

Everyday Astronaut

There were clips from the Elon Interview in it!

Awesome video! I thought clips from the new elon interview would be in it? Loved the video and can’t wait for the new elon interview!


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