For the third and hopefully last time, please explain 1.1 heat to me

[Firemetal]

Ok. The Mk1 cockpit, command pod and lander can heat up and explode in the upper atmosphere from a direct descent. The mk1 crew cabin however (which has a lower heat tolerance) does NOT burn up at all. It doesn't even get heat gauges. Please explain.

[bewing]

I assume that the crew cabin is not at the nose of your RV? It's the nose that takes most of the heat. Also, the nose can only conduct heat in one direction (toward the back of the rocket) since there is no part in front of it. Something in the middle of your rocket can conduct twice as much heat away in two directions.

If you do put the crew cabin at the nose, you will get a different effect -- blunt objects have a "detached shockwave", which make them heat up much more slowly. That is the basis of using klaws and shielded docking ports on the nose of spaceplanes to ease reentry.

 

[Firemetal]

2 hours ago, bewing said:

I assume that the crew cabin is not at the nose of your RV? It's the nose that takes most of the heat. Also, the nose can only conduct heat in one direction (toward the back of the rocket) since there is no part in front of it. Something in the middle of your rocket can conduct twice as much heat away in two directions.

If you do put the crew cabin at the nose, you will get a different effect -- blunt objects have a "detached shockwave", which make them heat up much more slowly. That is the basis of using klaws and shielded docking ports on the nose of spaceplanes to ease reentry.

 

Ahhhhh so I don't have a glitch? .-.

[Lelitu]

A pair of screenshots showing what's going on would make this much easier to help with.

 

However, I suspect Bewing has the essence of it correct. 

Detached shocks are just one more reason why a spaceplane always wants to reenter as nose high as you can possibly manage without losing control. *way* past the stall point in normal flight. The huge flat face of the belly forces a detached shockwave, spreads the heat load over more parts, and maximizes drag. All these things help you not cook before dropping below compressive heating speeds (1.3kps ish)

A bit of an extreme example perhaps, but coming in this high means everything gets heated evenly, and you slow down *fast*

Edited July 2, 2016 by Lelitu
Tried to add pic of spaceplane nose high reentry

[Streetwind]

Not really an "extreme" example, but rather a near-perfect profile. You should hold that attitude - or even steeper than that - until aeordynamic drag forces you out of it. You literally won't ever get better results with a flatter angle.

@Firemetal - be advised that of the mk1 parts, only the rocket pod is actually reentry-rated. The other parts expect you to either only fly inside the atmosphere, or to bring something to shield them with. Now, it is still possible to pull of reentry from LKO with them if you do it just right, but don't expect to make it if you lack background knowledge about how planes fly and what actually happens during reentry. Building spaceplanes with these parts is an expert's exercise. A newcomer should stick to the fully reentry-rated mk2 and mk3 plane parts.

[Firemetal]

1 hour ago, Streetwind said:

Not really an "extreme" example, but rather a near-perfect profile. You should hold that attitude - or even steeper than that - until aeordynamic drag forces you out of it. You literally won't ever get better results with a flatter angle.

@Firemetal - be advised that of the mk1 parts, only the rocket pod is actually reentry-rated. The other parts expect you to either only fly inside the atmosphere, or to bring something to shield them with. Now, it is still possible to pull of reentry from LKO with them if you do it just right, but don't expect to make it if you lack background knowledge about how planes fly and what actually happens during reentry. Building spaceplanes with these parts is an expert's exercise. A newcomer should stick to the fully reentry-rated mk2 and mk3 plane parts.

Ok. I believe using mk1 inline cockpit is a good idea. The mk1 command pod doesn't even work for me but the inline cockpit is pretty dang re-entry proof.

Also I have re-entry at 100%. Is that right?