how to avoid cyan aerodynamic lines?

[Gooru]

Going 400m/s at sea level isn't good for any plane, supersonic is fine in the higher atmosphere but it is dangerous to fly supersonic at sea level.

Some guids on SSTOs state you should go for 400m/s when useing RAPIERS before you climb higher.

Moving the CoM back is only possible by moving all tanks back and this would result in the CoM moving forward a lot, while fuel is drained. Isn´t this worse?

CoL and CoM touch, with the CoL slightly behind.

[Gooru]

Thanks too all for the help. I learnd a lot about yaw control.

But the plane now has got the heat-bug and explodes randomly. If i switch heat-damage off via cheat it shows 1242463523423%heat on nealy every part and glows in a bright yellow even if no overlay is enabled. I´ll delete it and start all over.

[sal_vager]

Anything clipping a cargobay? If so, it's an idea to remove it.

[Stoney3K]

Some guids on SSTOs state you should go for 400m/s when useing RAPIERS before you climb higher.

Moving the CoM back is only possible by moving all tanks back and this would result in the CoM moving forward a lot, while fuel is drained. Isn´t this worse?

CoL and CoM touch, with the CoL slightly behind.

When you fly using jets, your CoM doesn't shift, only when flying in rocket mode. So you should have little trouble ascending on jets and by the time you reach rocket altitude, the plane is hardly flying on lift anymore.

You *do* need to check empty CoM/CoL weight distribution because of re-entry. If the plane is too nose-heavy when empty it will just lawn dart and be unlandable when you reach the runway.

[Gooru]

Anything clipping a cargobay? If so, it's an idea to remove it.

Nope, unfortunatly not.

[Val]

When you fly using jets, your CoM doesn't shift, only when flying in rocket mode.

That is not true.

Imagine you have a craft which consists of only a fuel tank and a engine. When fuel is drained CoM moves towards the engine. And that happens no matter if the engine is jet or rocket.

What you probably meant is that, jets drain simultaneous from all* tanks, which is likely to move the CoM less, than a rocket engine, in a craft with multiple fuel tanks.

*Decouplers can change how jets drain fuel. They always take from the tanks that have most decouplers between them and the crafts root.

[Claw]

Val is correct. Even using jets, the CoM will shift. In fact, with the current fuel flow rules, it's kinda hard to determine exactly how the CoM will shift. That's because tanks are drained equally by units, rather than equally by something like percentage. So the tanks are actually draining unevenly in regards to a simple linear CoM shift from wet to dry. Instead, it sort of moves back and forth.

Cheers,

~Claw