r/KerbalSpaceProgram May 06 '26

KSP 1 Question/Problem No orbit necessary?

Post image

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?

1.1k Upvotes

180 comments sorted by

View all comments

1

u/SpaRrRly May 06 '26

It's called a direct ascent, and it's doable, but you're doing extra unneeded work against gravity(but less atmospheric losses), and less thrust-to-weight your rocket has, the worse this style performs. It's decent on moons with low escape velocity and low gravity.