Project O.C.H.

[GebetanSpaceProgram]

Project O.C.H (Name means something) is a project of mine that I need help on.

What is O.C.H?

O.C.H is a interplanetary ship, which will carry a small fleet of drones (3-4) in a bay. The Ship will have to be built in orbit, unless I can build a working "tug" system.

Ideas

My first proto, was built using struts, to build the internal frame. The next part, would have been the outer skin, but this was scrapped due to the failure of the internal system.

My next idea, is using a modular method, making each section at a time, though I have yet to start it.

Requirements

Mecha Jeb

Some form of Tug for take off.

A way to build it in space, eliminating the tugs if possible.

Cargo bay for 2 ships at least.

Size

Length will be per section 4 standard fuel tanks per section, 3 for the engine block.

Maneuvering

I was thinking of using the nuclear engine, but I dont want it to explode due to over heating, so I was thinking of using two sets of engines, one for normal movements such as positioning itself, and another for moving around fast.

Questions

My first problem is, can i make separate fuel sources foe each set of engines, so that I dont have to worry about fuel.

Second, is there a warp drive system?

Third, will orbital construction be possible at some point?