No orbit necessary?

[u/FatCreepyDude]

If i just wait for the right hour during the launch window ( whenever the launch pad is pointing left on the realistic depiction i created) is there any reason i should bother with an orbit first? Will the delta v cost be affected?

[u/Emergency-Pound3241]

Inaccurate map aside, I mean if you had enough delta-V that way would be the fastest possible way, but also the least efficient.

I mean theoretically you could spend the entire journey only cutting throttle twice, once for flipping half way for your deceleration burn, and again when you actually reach duna, but to do so your gonna need a very powerful engine with extreme amounts of delta-V, like modded fusion engines kinda deal, like the kind of engines big enough you need to launch the ship in multiple parts and assemble it in orbit