ChatGPT's shaky grasp of orbital mechanics

[warshipadmin]

Me:
if an astronaut leapt off a sateelite in a 200 km altitude orbit, at 1 m/s, what equation would define his distance from the staellite?
AI:If an astronaut leaps off a satellite in a 200 km altitude orbit, the distance between the astronaut and the satellite would be defined by the following equation:

Distance = 200,000 + Vt + (1/2)gt^2

Where:

Vt is the velocity of the astronaut relative to the satellite (1 m/s in this case)
g is the acceleration due to gravity on Earth (approximately 9.8 m/s^2)
t is the time since the astronaut leapt off the satellite.
It's important to note that this equation assumes that the astronaut is in a vacuum and there is no other force acting on the astronaut. However, in reality, there are other forces such as air resistance, the drag force, which will affect the motion of the astronaut. Additionally, if the astronaut is not wearing a suit, he will not survive the 200km fall.

Also, it's important to keep in mind that this orbit is considered as Low Earth Orbit (LEO) and the satellite is orbiting around Earth at that altitude, so the astronaut will be falling towards the Earth, not away from it.




Me:
I think you'll find that is the wrong anser. The astronaut would enter a slightly elliptical orbit

[Belushi TD]

Ummm... What?????

Shouldn't the problem effectively ignore the earth and use the frame of reference as the space station?

And yes, there is still drag at 200 km altitude, but unless you're going to try calculating this for months or years, it shouldn't be noticeable. And if you're going to be calculating for months or years, you need to calculate the orbit of the astronaut vs. the space station, taking into account that they are both orbiting the earth and are having very little effect on each other aside from the pushing off the astronaut does, not use at^2 + bt + c.

Something like this: r = (h^2/μ)/(1 + ecos θ)

Belushi TD

[warshipadmin]

I suspect there are going to be a rash of well written but meaningless matlab scripts floating around.

[Micael]

Its performance varies rather a lot depending on the field. Here’s some examples of where it has turned out to be surprisingly good.

I think we haven't fully absorbed the fact that careful academic papers have found ChatGPT clearly passes some of the most challenging American professional exams:
United States Medical Licensing Exam
MBA-level Operations exam
The Bar Exam (based on typical exam questions)