A press conference took place today at the Residence Hotel in Bucharest. Details about Mission 3 were presented to the journalists.

Helen will be using a gravitational stability method in vertical flight without aerodynamic surfaces or jet commands, by towing the component stages and payload. The towing can be made by cable, or rigid-articulated system. In order to have a stabilized rocket in vertical flight, in gravitational field, this method is using a towed mass in the same direction with the thrust. This mass consists in the next rocket stages and payload. The stability effect depends of several elements: the mass of the stabilized body, the mass of the towed mass and the length between the centers of gravity of the stabilized body and the stabilizer body. This method can be applied in the extra atmospheric space on vertical ascendant or descendent trajectory under the influence of gravitational field. The name of this method will be Popescu-Diaconu, after the name of the individuals that designed it. This method will be used for the first time on the Mission 3 flight of the Helen vehicle for the Google Lunar X Prize.