Landing on Jupiter?

[statickid]

Well, I went and landed a Deltaglider on Jupiter for you.
Here are the results:
Notice the static pressure: 2.014MPa!!!
Also the velocity (30.24km/s!!) imparted by Jupiter's spin on OrbitMFD on the left.

I could be wrong but I think that is how fast you landed and you are rolling. there isn't any ground texture so it is hard to see the movement. you probably have to use active thrusters to stop. think about how the ships in orbiter continue sliding across the surface of planets when they crash. of course a real ship crashing on earth would plow into the dirt and stop but a burning dgiv hulk continues to slide for several kms it seems

---------- Post added at 09:09 AM ---------- Previous post was at 09:08 AM ----------

you need ground speed of zero to be matched even with jupiters "surface" rotation

 

[Goth]

I could be wrong but I think that is how fast you landed and you are rolling.

Nope.
Your ground speed is in fact zero. I've just tried myself, I was perfectly stopped in the Map MFD but there was that strange VEL in the Orbit MFD.

 

[statickid]

oh ok

 

[Goth]

It' something like: if you would ever manage to take off despite of the pressure, the planet spin will throw you in the orbit which Orbit MFD draws.
If I'm not wrong.

 

[statickid]

naw, its just how fast you are rotating with the surface, if you look when you are landed at KSC you have an orbital velocity already, it helps, but you wouldn't thrown, per se.

 

[Izack]

You're not wrong, that's what happened when I took off. Of course, to manage to take off I had to turn off the Complex Flight Model, or else the engines wouldn't work under pressure.

 

[statickid]

ok, it is the path that you would follow, yes, but since the planet is rotating under you, it doesn't look like you are moving horizontally. however, it is not an orbit because it intersects with the planet i think there is one of jupiters moons i was doing eva and the astronauts would start flying away if i did a burst that put them out of ground mode, i'm not sure but it might have been due to the rotation or something it was really weird!

 

[Goth]

Of course it's not an orbit while you are landed, it's not what I said. But it's the theoretical orbit that you will have if you take off, as Izack seems to have experienced.

 

[statickid]

not while landed, an not while flying either until the trajectory no longer intersects the planets mass. its the orbit you would have if the surface didn't exist, wich in jupiters case, it doesn't actually exist like it does in orbiter. all ballistic trajectories would be orbits if the body they were orbiting shrunk to infinitesimal size. I'm just saying in a vertical takeoff you wouldn't be "thrown" you would just start "hovering". the orbital velocity is thinking of the planet as a stationary sphere while ground speed takes into account the rotation. technically with that frame of thought I have an orbital speed right now using my computer and when i jump i am thrown into an orbit that intersects the floor quite a distance from where i started, orbitally speaking

 

[Goth]

in a vertical takeoff you wouldn't be "thrown" you would just start "hovering".

Yes, this makes sense. The Orbiter's Jupiter fake ground deceives us because we are actually already travelling into the Jupiter atmosphere with a certain speed, as indicated by the Orbit MFD. Your Vel is 0 relatively to the ground but is X relatively to Jupiter. As it is 407.9 relatively to Earth when you are landed on Earth.

when i jump i am thrown into an orbit that intersects the floor quite a distance from where i started, orbitally speaking

This is why I called it orbit, even if it's not really an orbit.

 

[RisingFury]

Your Vel is 0 relatively to the ground but is X relatively to Jupiter.

v = 2 * Pi * r * cos[L] / t0

where v is velocity, r is planet's radius, L is latitude defined as 0 at the equator and t0 planet's sidereal day.

 

[Blacklight]

Maybe we should add this thread to "Addon Request: Realistic Gaseous Jupiter" or maybe "Realistic Gaseous Gas Giants" (as long as it's being done for Jupiter, why not do all three of them. )

 

[fireballs619]

Yea Id like that addon too, but I just dont see how it would be possible.

 

[Hmuda]

Maybe in Orbiter 2014.

 

[N_Molson]

Well I tried to reenter Jupiter with the DGIV, using the Outer Planets addon... Could not get under 680 km without burning !

This place is undoubtly a nightmare for spaceflight. The enormous gravity itself is a problem, the lift generated by the DGIV surfaces is insufficient to counter it : it just falls like a (winged) stone.

I'm going back to LEO, that's way safer

However, I launched the UGCO automatic probe from orbit. I was rather sceptical. But the probe managed a perfect reentry & landing. :hail:


Edit : I tried to start with the DG on Jupiter's "surface". It crashes on the ground, but the ship and some UmmUs survive. However, the DGIV is fully damaged & unable to takeoff. I EVAed a UmmU, it looks like the pressure wasn't a problem for him. lol. I released a turbopack, and was able to send the UmmU 2 kilometers above the "ground". The parachute performed exactly the same than on Earth. I used the UmmU atmosphere analyzer (Alt-X), it reported "pressure outside limits". What a surprise !

Concerning the surface, something is wrong. It actually moves, and there is some terrible clipping. I don't get it.

 

[Goth]

You are supposed to do it with a default DG
Anyway nice challenge eheh

 

[Izack]

Okay, so it wasn't a real orbit, but it was one helluva boost. :lol:

 

[ATPCFI]

Thanks guys, looks like I'll go to 1 of the moons for now. Sounds like a specific lat/long is not going to happen like I could do on Venus. Will Saturn present the same problem as Jupiter?

 

[Izack]

Will Saturn present the same problem as Jupiter?

Yes. They're both gas giants, aren't they?