Unmanned Systems Technology Dec/Jan 2020 | Phoenix UAS | Sonar focus | Construction insight | InterGeo 2019 | Supacat ATMP | Adelan fuel cell | Oregon tour | DSEI 2019 | Copperstone Helix | Power management focus

52 Show report | InterGeo 2019 which we’ve previously used on our Apogee product lines in the land and marine markets. However, we’ve also updated them mechanically to reduce their size, and improved the accuracy of the output from their software.” UAV integrators can thus choose between the original Quanta UAV, which gives roll and pitch accurate to 0.03 º , or the new Quanta Extra which outputs such readings to 0.008 º . The heading accuracy also depends on the model, providing from 0.2 º to 0.06 º respectively. The Quanta Extra weighs 345 g and comprises an IMU, and a GNSS and navigation processor that are enclosed together. The IMU measures 83 x 72.5 x 50 mm, while the latter two are 78.75 x 51.5 x 20 mm. The system runs off an input of 3.3-5 V DC, with a maximum consumption of 5.5 W. SBG’s computer simulations indicate that Quanta Extra will operate for up to 50,000 h before needing replacement. Data output from it can reach up to 200 Hz, with an 8 Gbyte data logger installed for record- keeping between downloads. The UAV can interface with the system via Ethernet, CAN bus, serial ports and other methods. T-Motor debuted two upcoming electric lift solutions for UAVs, the KV110 and KV130, from its U6 series of motors. “Both motors provide 2 kg of thrust force,” Olivia Wan said. The thrust-to-power ratio is given as 12 g/W, with more specifications on the motors to be released in the future. The company also unveiled its third- generation carbon fibre propellers, which have been developed with long- endurance multi-rotor craft in mind. The props have been produced from a mixture of T800 carbon cloth and epoxy resin, and have been designed to cut their weight over their predecessors by 10%, increase aerodynamic efficiency by 2-7%, thrust by up to 10%, and fatigue strength by up to a quarter (with the new material and carbon-to-matrix ratio having been chosen to improve the strength-to-weight ratio). The propellers will be available as fixed or foldable designs. Oxford Technical Solutions (OxTS) displayed its range of third-generation inertial navigation systems – the xNAV v3, xOEM, and Survey+ v3 – which it launched last September. “Although we’re using the same generation of GNSS receivers as in our second-generation products, as well as the same OxTS-made IMUs, we’ve installed an upgraded hardware platform, in terms of the computational architecture and the firmware that runs on them,” said Paris Austin. “This latest firmware is still compatible with our legacy products. That also helps with the development of OxTS’ future firmware features, and keeps the data output formats the same across all our systems. “The CPU we’ve upgraded to has increased I/O functionality and spare processing capacity, so it gives us significant room to iterate our firmware and add new features in the future.” The company has also made GLONASS standard across all its INSs, as well as offering BeiDou and Galileo as options for end-users wanting further satellite coverage. Flash storage has increased from 4 to 32 Gbytes across all systems as well. The xNAV v3 series has four variants: the x200, x250, x500 and x550. The x200 and x500 weigh 365 g each – 30 g lighter than the x250 and x550 – and consume 7 W during normal operations, 2 W less than the x250 and x550 thanks to more power-optimised GNSS receivers on the two former systems. In return for the increased weight and power requirements on the latter devices, they come with GPS and GLONASS L2 tracking as standard. That leads to RTK/PPK-capable systems, which in turn offers higher accuracy for all position and orientation readings, even in challenging environments. December/January 2020 | Unmanned Systems Technology The Quanta Extra INS from SBG Systems T-Motor’s KV110 and 130 U6 motors