Space Platform Speed Changes Half-Way?

[Meehael]

Hey guys,

I've noticed the speed of my platform is 223 km/s and then around half way to the destination it changes to 243 km/s.
Why's that, please?

The thrusters are full, there's enough fuel in tanks and I didn't change the platform during the trip (to reduce its weight).

Thanks

[mmmPI]

This is the gravitationnal pull from the origin or destination, it can help recover platforms that ran out of fuel, it's a 10km/s that has different direction in the first part and the second part of the travel.

[Meehael]

Thanks, that would explain it