Some of the projects being worked on are Discrete Variable Thrust (DVT) technology, shown below, Novel Propellants, Composite Rocket Motors Cases, Resonant Acoustic Mixing (RAM), Additive Manufacture and Propellant Modelling. In the past Roxel has worked on many other research projects such as Continuous Variable Thrust (CVT) and Pulse Rocket Motors.
Discrete variable thrust: boost phase (left) and sustain phase (right)