reply to post by crowdtransplanter
The ascent stage of the Lunar Module was steer-able, so it's not like they only had one shot at getting it perfect. They certainly did need to get
pretty darn close due to limited fuel on the LEM, but once they got the trajectory "close enough", they could fine-tune their docking approach by
using 16 reaction control thrusters. As I said, the amount they could correct their docking approach was limited by fuel, but they were given enough
fuel so some course correction could still be done.
All of the orbital mechanics and rocket thrust knowledge required to get the LEM ascent stage to dock with the Command Module were well-known at the
time. All it took was for someone to do the math. I'm not saying the math was easy, but it wasn't something that couldn't be done "technologically
speaking".
edit on 4/14/2011 by Soylent Green Is People because: (no reason given)