Rocket Propulsion Basics

This video provides some basic insights on how rocket motors work. The video addresses subjects such as combustion, internal pressure, rocket nozzle theory, and thrust curves. It also includes a test of a model rocket igniter and a static firing of a C6-5 model rocket motor. This video is intended for high school students (or higher) with a basic background in physics.

[gravitron]

This is the issue I have with YouTube’s algorithm. This video is great and should have WAY more exposure.

[benjaminminer]

This is the best basic explanation of how a rocket motor works that I have seen on youtube.

[raghavv]

you don't deserve 1.64k

you deserve 1.64 million

[labratscientific]

There has been some discussion about internal pressure imbalances and how they produce thrust. Here are a couple of quotes that support the content in this video. "Thrust is the force that propels the rocket forward... Physically speaking it is the result of the pressure which is exerted on the wall of the combustion chamber ." (Rocket and Space Technology Training Couse). "The size of the arrows indicates the relative magnitude of the pressure forces. The axial thrust can be determined by integrating all of the pressures acting on the areas that can be projected on the plane normal to the nozzle axis. The radially outward acting forces are appreciable but do not contribute to the axial thrust, because the rocket is axially symmetrical." (Rocket Propulsion Elements - An Introduction to the Engineering of Rockets - George Sutton).

[mete]

I fell in love with your style of teaching

[comradeisco]

this is like the best video i've ever seen

[nyinyinyanlin]

You deserve many more subscribers and viewers! Your videos are awesome and well produced. Thank you!

[RTXti-zdul]

Bro just saved my aerospace EOC grade. Thank you. 🙏

[cesarjom]

Excellent breakdown with right amount of details!

[Whytho]

Great video, I've been searching for an answer to a question about where thrust acts on a rocket. You've gotten me much closer to the answer. My question is, how are all of those forces transferred to the rest of the rocket? If a rocket can produce millions of lbs of thrust, why doesn't the nozzle crumple and crush under all of that force? Nozzles look like an extremely delicate component that's extremely thin walled. Even if a nozzle is being cooled, its still operating at extremely high temperatures enough to make the nozzle glow white hot. I can take a hammer and deform red hot metal. Why do the forces not immediately destroy the rocket? Are those forces acting all the way back through tons of delicate components the combustion plate, pumps, turbines all the way to the back of the extremely thin walled pressure chambers? Why don't those components break under millions of lbs of thrust??

[nikoortega]

I wish that everyone on earth would watch this video

[isaacdiaz]

I love "Rocket" science 😍 ❤️

[zzuraish]

Why I just found ur channel 5 years later, u should have more subscriber, sad seeing that ur last upload was 5 years ago 😭

[sohamnayak]

man you deserve so much more than this

[Harsh-wjwf]

We have to try to use the mechanism of noozel in form applying and making other models that provide an alternate or modified mechanism in the process

[nickzherdev]

In the divergent section of the nozzle, the pressure continues to decrease in comparison to the throat, and because the flow is supersonic, the velocity increases. If the flow remained subsonic, the increase in cross-sectional area would lead to a decrease in velocity according to the Bernoulli principle.

[emmanuelpoisson]

Hi. I am looking for a calculation which I can use to determine the size of the combustion chamber. I am using Methalox as a fuel for the rocket.

[Harsh-wjwf]

Gas and other things may be used in terms of heat and cold i.e. thermal conductivity and high and low
.
Stored in the form and removed out like a injection by pump.

[Splattervision-qhsd]

So it’s not the expulsion of mass exiting the nozzle (action-reaction) as much as it is the pressure acting on the front of the motor?

[thedaredevilincognito]

What is the ejection charge for? Also, your solid rocket motor only burned for 1.3 seconds. Does that mean it is its Isp?