Re: Changing direction...
Solar sails don't work anything like sailing with wind.
The sail's not going to lift anything against solar gravity, so the only part of your acceleration vector that's of particular interest is whether it's speeding up your orbit or slowing it down. If the former, you'll move outwards. If the latter, you'll move inwards.
There is a solar sail mod for KSP, if you want to play with one.
Biting the hand that feeds IT
