http://revistapesquisa.fapesp.br/en/2016/05/27/a-brazilian-satellite/
The continuity of the Microsatellite Launcher Vehicle (VLM) is guaranteed, and the introduction of the launcher Aquila I and Aquila Ie (VLX Family), different from each other by the weight they carry and the altitude at which they arrive, is guaranteed.The "VLX" family will consist of three stage launchers, ie three S50 engines in the first stage (two sides), another S50 driving the second stage and a liquid propellant rocket engine as a third stage.The load capacity would be around 300 to 500 kg (or even more), depending on the height and orbit to be achieved.According to Brigitte Verissimo (update), the next vehicle after Aquila 1 will be called Aquila 1e (e = enhanced) and not Aquila 2. The Aquila 1e will have an upper stage the pressurized liquid propulsion and will not be used the L-75 engine . The capacity of this stage has not yet been defined.This new family will not make the VLM-1 project unfeasible, according to Brigadier Vital, as it is necessary to qualify the S50 engines in flight, among other things....The VS-50 is a vehicle with 12 meters of compliance, 1.46 meters in diameter and mass estimated at 15 tons.It has, in its first stage, an S50 engine and, in its second stage, an S44 engine, previously used in VLS-1.For the VLM-1, a second S50 engine will be added. They will make up the first and second stages of the rocket and the S44 will be the third.The S50 engines are in production at Avibras Aerospace, through a contract signed with the Foundation for Support of Space Science and Technology Research Projects (Funcate).In the contract is planned to build six engines, but there are already set for the purchase of two others to complete the mission of launching the VLM.Thus, in anticipation of scenarios, the CDPEB created a working group to deal with the VLX, successor to the VLM, configured to use two S50 engines laterally as booster.