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Angular momentum and centripetal force (in this case, gravity) already adequately explain basic orbital mechanics, and have done so for some time.

The tail rotor on a helicopter counters the tendency of the body to rotate as it applies a torque to the main rotor. I don’t see how such an action manifests itself in orbital systems. The earth e.g. doesn’t cause the moon (or any satellite) to rotate by exerting a torque on it as with a helicopter. So it’s not clear how this is a useful analogy

Yes ditch the helicopter.

Centripetal forces are radial

Helicopter forces are Torque forces which are tangential.

Further there are also helicopters that balance these torques by twin counter rotating main rotors instead of tail rotors.

ا الThank you for your feedback!

I think my idea may have been misunderstood a little — I wasn’t comparing the helicopter’s structure or its torque balance.

What I meant was the rotational motion itself, like the spinning of the helicopter blades.

In my analogy, this represents how the rotation of planets, galaxies, and even clusters helps maintain their stability, much like how the spinning rotor keeps the helicopter stable in the air.

I meant it as a simple conceptual analogy:

The centrifugal effect of rotation balances the inward pull of gravity.

So, rotation acts as a stabilizing factor — in both the helicopter and cosmic systems.

Of course, I’m not saying the mechanisms are identical, just that the principle of balance through rotation is similar.

I appreciate your clarifications; they actually helped me express my idea more precisely!فThank you for your feedback!

I think my idea may have been misunderstood a little — I wasn’t comparing the helicopter’s structure or its torque balance.

What I meant was the rotational motion itself, like the spinning of the helicopter blades.

In my analogy, this represents how the rotation of planets, galaxies, and even clusters helps maintain their stability, much like how the spinning rotor keeps the helicopter stable in the air.

I meant it as a simple conceptual analogy:

The centrifugal effect of rotation balances the inward pull of gravity.

So, rotation acts as a stabilizing factor — in both the helicopter and cosmic systems.

Of course, I’m not saying the mechanisms are identical, just that the principle of balance through rotation is similar.

I appreciate your clarifications; they actually helped me express my idea more precisely!

12 minutes ago, nizar said:

The centrifugal effect of rotation balances the inward pull of gravity.

Your original post mentioned centripetal force, which is correct.

Your second force refers to centrifugal effect, which is imaginary.

You misunderstand central forces.

The centrifugal force is a real force that must be supplied by a real agent of force.

In this case gravity.

In the case of a stone whirling on a string it is the tension in the string.

5 minutes ago, studiot said:

الHello swansont,

Thank you for your feedback! I understand your point about angular momentum and central forces governing orbital mechanics.

I wanted to clarify that my analogy wasn’t about the helicopter’s structure or torque balance.

I meant the rotational motion itself, like the spinning of helicopter blades, as a metaphor for how the rotation of planets, galaxies, and clusters helps maintain their stability against gravitational collapse.

So while the mechanisms are different, the principle I’m highlighting is that rotation can stabilize a system, which is what I wanted to emphasize.“Maybe the previous wording or translation caused some misunderstanding"

I really appreciate your comments—they helped me express my idea more clearly

21 minutes ago, nizar said:

In my analogy, this represents how the rotation of planets, galaxies, and even clusters helps maintain their stability, much like how the spinning rotor keeps the helicopter stable in the air.

But it’s not how that happens

And you need to figure out how to use the quote tags. Your response needs to be outside of the quote box, by hitting return/enter a few times

6 minutes ago, swansont said:

Hello swansont,

Thank you for your previous feedback! I’d like to share a broader point:

Rotation seems to be a fundamental principle in the universe. From the spin of planets and stars to the rotation of galaxies and even the early universe after the Big Bang, almost every system depends on rotational motion.

My intention is to highlight that rotation is a key factor that shapes stability and direction in the cosmos, not just isolated systems.

@nizar

You and your wanting to learn attitude are welcome.

but you now have only one more post in your first 24 hours (your are allowed 5 for security purposes), so do not waste it answering me.

I do not know what resources you have access to but Jones and Lambourne are a fabulous resource for cosmology.

here is the relevant newtonian maths extract.

there is so much more in the book.

Click on the image to get full size

Edited October 25Oct 25 by studiot

14 minutes ago, studiot said:

@نزار

نHello studiot,

I understand this is my last chance to reply in this discussion, and I truly appreciate it. I want to take this opportunity to clarify my points fully.

First, I want to emphasize that I fully support the concept of gravity and I respect your view. My intention is not to challenge the well-established physics of orbital mechanics.

The example I used involving centrifugal force was a result of the translation tool I used to convert my text into a PDF, and it unintentionally changed the wording. My English is not perfect, and this led to mentioning centrifugal force in a way that was not scientifically accurate.

What I actually mean is that the universe rotates at a consistent speed, and this rotation is a fundamental factor that helps maintain stability.

My helicopter analogy was meant to illustrate that when the rotor blades spin at a constant speed, the helicopter remains at the same height. Similarly, the rotation of galaxies, planets, and stars at consistent speeds keeps them stable in their positions, maintaining their structure and motion over time.

In other words, while gravity explains the forces acting on objects, the uniform rotational motion is what organizes and stabilizes systems at all scales, from planets to galaxies, and possibly even the universe itself.

I hope this clarifies my intended point and makes my analogy and ideas easier to understand. Thank you again for your feedback, it has helped me express my thoughts more clearly.

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