wurstll

Hi guys, i tried several weeks gettin back from eve to kerbin in carreer mode. I build a lander wich is pushed to eve by atomics. The lander has a delta v about 8500 m/s to start and gettin in an 150km orbit. My atomic stage is still waitin in an 150km orbit of eve, too. I always land at 25° S; 158° W in an height of ~7500m. But my 8500 m/s seems to be not enough gettin in an stable orbit. How much delta v i need to get in an orbit of eve? 10k+? Please share ur experience with me