The affect of gravitational sources on an object is really just
a sum of the vector fields for each gravitational body at a certain
point in space. This is our last addition to the hovercraft-cum-
spaceship model. With the added gravity, we can perform gravity
assists, thereby reducing some of the fuel we use (yeahh!).
RRTs are not just good designed for terrestrial objects. By
exploring an interesting situation, new solutions emerge. The
techniques discussed here(on a much simplified level) could easily
have been used to plot the course of the Voyager deep space probes
as they whizzed by planets.
By adding predictive paths for the orbits of the planets and
other gravitationally intense objects in the solar system, RRTs
can easily be beneficial to the scientists at
The one thing that can be slightly annoying about RRTs is the
expected time to solution. Running the same scenario several times
can return answers in 8000 iterations or 80000 iterations. This is
due to the fact that RRTs are just that: random. Sometimes you hit
on the correct configuration, sometimes you don't.
Last modified: Thu Apr 29 19:19:47 CDT 1999