Atmospheric (Re)entry

[james123182]

what I meant was in comparison to the stated velocity of a jumper it's quite low.

[Ouroboros]

what I meant was in comparison to the stated velocity of a jumper it's quite low.

The main thing to take from that page I linked as it regards this situation is that the shuttle enters at those speeds because it lacks the thrust necessary to slow itself down from orbital speeds.

A jumper doesn't have that issue. It can decelerate itself at will. It doesn't even have to have its engines pointing in the right direction.

[Mister Oragahn]

They reenter the atmosphere at lower velocities, hence not enough friction for a heat wake.

The wizardly wonders of anti gravity floaty tech and arbitrary thrust direction engine "brakes".

^ that.
No need to look elsewhere, they come in slow enough so there's not tons of friction generated.
Also, we rarely see the part where, in an atmosphere, the reentering ship would burn. We generally see the gateship high in orbit, or already a couple kilometers close to the ground.

but a shuttle enters at low velocities, and still has burn-up.

They come in very fast actually, using the atmosphere to slow down. The trick being not to come in too fast or they burn, or at a too open angle to they bump back towards space. It's quite cool, in fact, that modern shuttles brute force their way through the atmosphere and turn into fiery comets.

[garhkal]

Perhaps the jumper's shields work differently than the other ships so there IS some sort of 'absorbtion' of the flames..

[Mister Oragahn]

They could theoretically absorb part of the thermal energy that hits them, but they couldn't absorb the heat of gases pushed aside by sheer pressure. Plus we've seen other shields in SG that don't make the flames disappear. Take Atlantis or some 304s.

[amorgan9487]

Take a look at the Gou'ald gliders though, or the 302's, they have never shown any sort of flaming re-entry. Maybe it is just something about smaller ships in the gateverse that doesn't create flames while entering an atmosphere.

[garhkal]

Neither did the wraith darts from what i remember..

[Mister Oragahn]

Take a look at the Gou'ald gliders though, or the 302's, they have never shown any sort of flaming re-entry. Maybe it is just something about smaller ships in the gateverse that doesn't create flames while entering an atmosphere.

We've never seen them anywhere close to the region of atmosphere where such things happen.
Now, as a matter of fact, both Darts and Death Gliders were seen leaving trails as they quickly descended from the skies.
For the Darts, it happened in Siege part 2 I believe, and for the DGs, in that episode where SG-1 rescue Apophis who seeks sanctuary. It also happened in Continuum. In fact, I wonder if we haven't seen Klorel's DG take a heating when he crashed on Tollanna. I think we clearly did.
Didn't we see a Dart heating up in Vegas? Can't remember...

[garhkal]

It might also have to do with HOw they are entering.