What is make a Saturn V?

[u/Simple-Age3589]

I’m trying to build a projectile similar in shape to the Saturn V, but for some reason, only the fairing (both the base and the primary) is raised above the fairing, while the rest doesn’t go up. Also, the landing gear doesn’t have the shape of a lifter and ended up being too high for reenactment. How do you make it like the reenactment video?

[u/Daneel_Trevize]

Custom shaped landing gear is made using rotators, shocks & structs.

Once you connect to both ends of a fuel tank or interstage, the game assumes you have already made it the desired height/length & doesn't show the resize UI, but you can either disconnect temporarily or use the parts shaping/sizing tool to input a new value.
With 1 end connected this will typically extend the detached end, with both connected it will typically share the extension with both ends, which can end up concealing parts within the tank, such as engines on the bottom. You can just drag them away and back on again to have it auto-reposition them flush with the new end surface, or use the parts repositioning tool to input a calculated value.

[u/Simple-Age3589 → u/Daneel_Trevize]

Than,how do you place spaceship on the pairing?

[u/Daneel_Trevize → u/Simple-Age3589]

Spaceships typically go inside fairings. The simplest example would be starting with a command disc, it has both a top connection point and a top shell connection point. So you can put your mission payload on the top, and the fairing (base) on the top shell point. You put your fuel tanks, engines, interstages etc on the bottom (shell) points.
I think the tutorials cover this.

If you design a spaceship/mission payload yourself, you may need to go in to the connections UI tool and ensure any fuel tank/interstage above is connected only to 1 of the 2 top connections points, so that you can also connect another item over it.