How gravity assists work. Voyager 1 used gravity assists to accelerate to about 17 kilometers per second, but how do gravity assists work? In this video, I will be explaining the orbital mechanics behind a gravity assist without going into math or fancy terminology. Even your dog will be able to understand gravity assists after watching this video!
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Also when any object leaves earth such as satellites or the ISS that makes Earth lighter which causes Earth to speed up as it orbits the Sun to compensate the extra energy Earth will have as it’s now got to compensate for the balance of gravity pulling on it as well as the centrifugal force which was nicely balanced before we made the planet lighter.
I asked myself the same question thanks for the answer
That still doesn't make sense though. Cause the movement is relative. So relative to the planet, there is a symmetry of acceleration and deceleration, which will net you your initial speed. The fact the planet is moving just means this net acceleration and deceleration happens over a longer period of time. It takes longer for you to reach the planet, and so you are accelerated towards the planet longer, and it takes longer for you to leave the planet's influence, so you are decelerated longer, in equal proportion to your acceleration, because the planet's movement is constant. The only way to achieve a net acceleration is if you find a way to spend less time in the planet's influence as you leave. You'd have to calculate an asymmetrical trajectory. More time being dragged in, than time being dragged back. That fact isn't obvious from this explanation. This then leads you to pull on the planet with your own gravity, when behind it, but you don't pull as much on the planet when you leave, meaning it has lost some velocity.
I needed this for ksp because eyeballing it each time is kinda jank lol
its like playing snap the whip on skates
BTW star trek doing this around the sun to go faster than warp 10 is pure nonsense
It's a shame I'm not an English speaker; I have a decent understanding of orbital mechanics, and I wish this channel had a Spanish-language version.
So it's not really a gravity assist…
But the satellite will start with the same relative velocity as the earth, so how do they cancel that out so that the earth is actually moving from its perspective?
Was the example planet eve?
Dont worry i do reverse gtavity assists give the planet more energy
Think of it like a curved track. Gravity bends spacetime. Its like that nascar driver that drove on the wall to accelerate into a higher place. Or bobsled–you're zooming around that corner, and because the planet is in motion, you accelerate around that corner and the zoom through the straight.
does that mean you can gravity brake?
We can do the other way to slow down to an orbit just like in ksp with tylo
If this was real and the rest of the gargon then we wouldnt have a 3 body problem.
Great explanation, except for one thing: This neglects to mention the fact that even if it gained 0 velocity from the planet's velocity, it would still go way farther in the solar system because it still traded it's velocity in the direction away from the Sun and fighting the Sun's gravity, for the same velocity in the azimuthal direction.
That's the easiest and on point explanation I have ever seen about gravity assist
Great 👍
thanks, i'll use this in my ksp playtrhough
Kerbal Space Program players where you at 🗣️
If my understanding is correct, on your way to the planet, your speed is lower, and gravity accelerates you longer, as the time of your way to the planet is bigger.
And while you go from the planet, your speed is higher, and the time that gravity slows you down is decreased.
This is 3rd grade physics