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

what just happened

Thank you very much. Great experiments. Very educational. I hope you continue your work to share your knowledge

5 minutes was enough to determine that this is not worth any more of my time. He doesn't realise that a wing does not operate in a tube. Or that his acknowledged concern about the incompressibility of air is indeed a show stopper. Conservation of mass in a tube has absolutely nothing to do with the generation of lift.

Thank you

12:00 great, but once it launches and loses mass from the bottom up, how is CG-CP balance maintained???

Thanks! Helped a lot with understanding truss problems

this is just me changing orbit in ksp no ifs ands or buts this is all i use when prograde and retrograde

Agree with another viewer's request to see and understand how the wind tunnel works ?

Outstanding analysis and video quality ! Your serious about this hobby, terrific explanation 😊

Excellent video lesson ! Not only a great video on what is center of pressure but also why it is important to the flying characteristics 😊

thank you it helped a lot

F(ab) goes down right? it is already proven in this equation 6:49 so why does you calculate it goes up in the other equation? 7:35

Best teacher I ever saw on YT! Few resources and tangible explanation makes invaluable information transfer to everyone! Thank you so much for sharing!

By the way, thank you. Just a thought though, would it not make sense to take away weight to enforce the center of gravity instead of adding? That would help for speed.

I am a distant relative of the Lee family from the same area. Most of my family on that side lost their lives in Coal mines. I have fought, starved, and survived that life to work in the aerospace and military supply area. I was on the Trident missile program and Raytheon missiles. A late starter at age 32, I am a living example you never give up and fight until your last breath. I am now with a a break-off company from Raytheons best inventors to help with innovation and new future ideas. We are part of our ancestors and though we improve on those characteristics, we should still be thankful for the sacrifice they made.

So, build your rocket, with everything that you want it to fly with and in the approximate location of where you want your items to be. Then "teeter-totter"(highly scientific) static balance it on the table, and mark that spot. Take your string and tie it to that balance point, and give it a swing. If it swings straight into the airflow,,your getting closer to flight. Once that's set,, start moving the string back(twoards the fins) until the model goes unstable to see where the CP is to make sure you have the body tube diameter margin away from the CG. Yes??.

What effect do the walls of the tunnel have on tests like these? I recall that the NACA* guys had some way to compensate when testing airfoils, but I don't know what it was. *Before NASA. Lots of great info dug up by them.

Just look how the post starts wobbling when the string is pulled in. Angular momentum is clearly transferred from the ball to the setup. Conservation of angular momentum is only conserved in an isolated system.

Come back. Come back from wherever you are.

But how are you supposed to calculate when it breaks ??? Ive been searching all day. I need to calculate when it will break

That's a very infirmative and educative ,all the best Sir , Thank you .

One body diameter is the go to number for Stattic Margin, but why one diameter? I understand the math, I'm quite certain a Static Margin of .2 would be unstable. But why was 1 diameter chosen?

Sir why did you stop uploading these videos. I guarantee you will be successful on CZcams if you cracked the algorithm a bit better

Airplanes use cg and cp also..

This is so dumb. First of all, the axle needs to be stiff, not a ridiculous wobbly piece of wood that changes all the physics. We don't see any actual measurement being made. You are simply using the argument of authority, which is just pseudo-science. Here is a real experiment done with actual measurements directly visible on the video: czcams.com/video/abuPJesWQRY/video.html

Nice video! Brasil

I remember when I believed in space travel.

Ggggoooood

Clearly, you are a crackpot who doesn't understand basic physics: czcams.com/video/RE-6s1B-lc8/video.html

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?

Thank you!

Soo in conclusion, we need to make rocket lenght 2x max lenght of solid sugar motor?

thanks for this , was very helpful

The slow-mo of you swinging the cylinder around your head was Hollywood-level. A true work of art. You looked like a majestic and benevolent lion, taking a well-earned day off from mauling zebras to enjoy a day in the park.

awesome

So when the mass is increased with a constant parachute area and shape the drag coefficient should decrease? the greater the mass the higher the terminal velocity since terminal velocity is squared and is inversely proportional the drag coefficient should decrease right?

Can this method be used to measure MOI of an asymmetric complex object by keeping the strings at a equal distance from centre of mass ???

my favourite subject. rocket science. Thank you, i learnt so much today. what about fuel distribution. Weight pay.load capacity? great teacher you are Sir. simple and to the point.

your test are for a horizontal flying rocket like an air plane but rockets fly vertically

it was really helpful sir...keep up with such content. Thank You

Thank you, professor. Rockets are a fascinating matter.

from costa rica , keep the great awsome informative works coming

Beautifully explained

Why does the nose produce lift when it's symmetrical?

Простая стабилизация не выход. Необходимо проворачивание ракеты вокруг продольной оси. Для этого хотя бы поставьте стабилизаторы под небольшим углом 1-2 градуса к продольной оси. Самостабилизация ракеты происходит тогда, когда центр тяжести ракеты расположен впереди центра давления воздушного потока. Ваша ракета будет летать нестабильно.😊

Excelente video... me surge una pregunta... cómo se auto estabiliza el centro de gravedad ante la continua variación de masa de combustible? ... muchas gracias... saludos

I loved this explainer, without fancy graphics nor music, i did really learn from it, amazing one, keep doing more like this one

I'm just here to up my KSP game

excellent video , thank you to share your knowledge