http://english.pravda.ru/science/tec...o_satellites-0
I don't have a clue what they are talking about.

"Specialists of the Russian Research Center for Space Systems are
completing the tests of a unique engine based on new physical principles
to obtain propulsive power, Itar-Tass reports.
The engine, which does not emit reaction mass, was installed at
Yubileiny satellite, which was launched into orbit in May of 2008. The
engine, which operates both autonomously and remotely, allows the
satellite to move from one orbit to another."

"The movement takes place as a liquid or solid body moves on a
tornado-shaped trajectory."

EmDrive of some sort?: http://en.wikipedia.org/wiki/EmDrive

Pat