Is is possible for winged spacecrafts to fly(or should I call this atmospheric surfing?) in gasgiant's thin upper atmosphere and come back to orbit safely again?

This has been done on Mars. It's called aerobraking manouvre

It's also a super fun thing to do in Kerbal Space Program or Orbiter.

Is is possible for winged spacecrafts to fly(or should I call this atmospheric surfing?) in gasgiant's thin upper atmosphere and come back to orbit safely again?

This has been done on Mars. It's called aerobraking manouvre

Yes I know what is aerobraking and have done this in Orbiter spaceflight simulator multiple times. I thought it might be different from Mars(or any other terrestrial world with atmosphere) on gas giants since they have fast rotation, which causes large planetary scale storms. 

It's also a super fun thing to do in Kerbal Space Program or Orbiter.

But not in Space Engine? For shame!

Yes I know what is aerobraking and have done this in Orbiter spaceflight simulator multiple times. I thought it might be different from Mars(or any other terrestrial world with atmosphere) on gas giants since they have fast rotation, which causes large planetary scale storms. 

Ah, yes, it still works for gas giants, or indeed any planet with atmosphere.  The atmosphere will always act to brake the orbit because it cannot rotate faster than orbital speed.  It also can't be too strong of a braking -- a faster wind going against you will just make the optimal aerobraking altitude higher.

Does anyone know any accurate 2d simulations of convective cloud systems that can be run on the average PC?
Something like this that doesn't use 100 million particles. 


Here's an example of how I'd image one would appear to be.

Surprised you guys aren't talking about Hurricane Maria and its impacts in the Caribbean and the second Mexico earthquake and trapped children Also had a 3.6 quake in LA and a 3.8 quake in Illinois this week!  I recall the Nature papers I posted about the tremor-TC connection......

Am I allowed to post here if I like science but I am mad at it for now because of all the work it is making me do?

Does anyone know any accurate 2d simulations of convective cloud systems that can be run on the average PC?
Something like this that doesn't use 100 million particles. 

I don't think it is possible to get accurate simulations of convective systems, especially tropical cyclones, in 2D.  These systems are fundamentally three dimensional in the sense that low level winds circulate towards the low pressure center, and then rise up, releasing the latent heat energy, and then flow outward aloft.  If you only treated it as 2D at the surface, for example, then starting with a low pressure center would result in immediately equalizing the pressure and killing the storm.  The storm needs that 3D airflow to breathe.

Particles is not a good method either, because a system of clouds is not a system of particles.  Clouds are parcels of air where the water vapor has condensed, so one instead models the air movement and the processes behind condensation, precipitation, etc.  

It might be possible to 'emulate' something like a cyclone without that intensive physics in 2D by removing the air from the center of the system as in a draining bathtub model, but I have no idea how well it would really work for making something that looks believable.  I doubt it would do a good job capturing the behavior of a real cyclone.

Jerrymolie, welcome to science.  We do it because it is intellectually stimulating, not because it is effortless.

Does anyone know any accurate 2d simulations of convective cloud systems that can be run on the average PC?
Something like this that doesn't use 100 million particles. 

I don't think it is possible to get accurate simulations of convective systems, especially tropical cyclones, in 2D.  These systems are fundamentally three dimensional in the sense that low level winds circulate towards the low pressure center, and then rise up, releasing the latent heat energy, and then flow outward aloft.  If you only treated it as 2D at the surface, for example, then starting with a low pressure center would result in immediately equalizing the pressure and killing the storm.  The storm needs that 3D airflow to breathe.

Particles is not a good method either, because a system of clouds is not a system of particles.  Clouds are parcels of air where the water vapor has condensed, so one instead models the air movement and the processes behind condensation, precipitation, etc.  

It might be possible to 'emulate' something like a cyclone without that intensive physics in 2D by removing the air from the center of the system as in a draining bathtub model, but I have no idea how well it would really work for making something that looks believable.  I doubt it would do a good job capturing the behavior of a real cyclone.

Well that's disappointing to hear. Thanks for answering anyways.

Does anyone know any accurate 2d simulations of convective cloud systems that can be run on the average PC?
Something like this that doesn't use 100 million particles. 

I don't think it is possible to get accurate simulations of convective systems, especially tropical cyclones, in 2D.  These systems are fundamentally three dimensional in the sense that low level winds circulate towards the low pressure center, and then rise up, releasing the latent heat energy, and then flow outward aloft.  If you only treated it as 2D at the surface, for example, then starting with a low pressure center would result in immediately equalizing the pressure and killing the storm.  The storm needs that 3D airflow to breathe.

Particles is not a good method either, because a system of clouds is not a system of particles.  Clouds are parcels of air where the water vapor has condensed, so one instead models the air movement and the processes behind condensation, precipitation, etc.  

It might be possible to 'emulate' something like a cyclone without that intensive physics in 2D by removing the air from the center of the system as in a draining bathtub model, but I have no idea how well it would really work for making something that looks believable.  I doubt it would do a good job capturing the behavior of a real cyclone.

Jerrymolie, welcome to science.  We do it because it is intellectually stimulating, not because it is effortless.

I'd expect that you could get fairly accurate hurricanes by simulating several 2D layers, with the air from one layer "moving" throughout other layers. Of course, it probably wouldn't have anywhere near the complexity of a purely 3D simulation.

I think that could work fairly well, though I might call it a pseduo-3D simulation at that point since you keep track of the flow between layers.

Back on one of the other science forums I frequent we're talking about signs that the volcano Agung might erupt in the near future and the possibility of it causing a (temporary) cool down in the climate because it's near the equator and it's usually low latitude volcanoes that do that.  Would probably be somewhere between VEI 4-6 if it did happen.

By the way, what you guys are talking about sounds like 2.5D graphics

In SE I see liquid water oceans on planets at or above 100 C. Is there a scientific explanation for this?

In SE I see liquid water oceans on planets at or above 100 C. Is there a scientific explanation for this?

look at the atmospheric pressure. if it is high, then the boiling point raises dramatically.