Unmanned Systems Technology 026 I Tecdron TC800-FF I Propellers I USVs I AUVSI 2019 part 1 I Robby Moto UAVE I Singular Aircraft FlyOx I Teledyne SeaRaptor I Simulation & Testing I Ocean Business 2019 report

56 Both units are tested to operate between -20 and +55 C, and communicate over 1.4-1.495 or 2.4-2.495 GHz bands. The overall system offers downlink throughputs ranging from 2.3 Mbit/s to 12 Mbit/s, as well as BPSK, QPSK or 16-quadrature amplitude modulation. Bell showcased a full-scale model of its Nexus urban air mobility vehicle, with which the company hopes to begin commercial operations by the mid-2020s. “We are actively working with regulatory agencies, testing components and sub-components, and developing our production vehicle to meet that commercial operation target,” said Sam Bryk. “The configuration here, with six rotors, is a concept vehicle but it’s what we’re currently developing towards. The initial vehicle will probably reflect something very close to this, depending on factors such as wind tunnel data, flight test data and regulatory requirements.” Bell has partnered with Safran, which will provide the single gas turbine engine for the craft’s powertrain, and the electric motors to be powered by that engine. Inertial Labs presented several key improvements for existing inertial systems and unveiled a new dual-antenna inertial navigation system, the INS-DL. The system is compatible with all major multi- frequency constellations as well as SBAS, DGPS and RTK. The INS-DL can be configured with different Kalman filters depending on the type of vehicle on which it will be used. These include algorithms to process inertial data and output actionable motion readings for UAVs, UGVs, UUVs, gimbals, helicopters and automated guided vehicles. “It also integrates an IMU that has a 1 milli- g accelerometer, and gives 3 º /h in-run bias stability gyroscopes,” said Jamie Marraccini. “We evaluate and use GNSS receivers from many companies, and as well as testing for vibration and shock, we aimed for cost optimisation to keep the price of the INS-DL roughly 50% below the market average.” The company also demonstrated the next-generation variant of its single- antenna GPS-aided INS-P, which integrates a GNSS receiver from Novatel and a gyro-compensated fluxgate compass. Marraccini added, “The INS-P has many configurable inputs and outputs in order to work directly with different UAV airborne equipment such as Cobham’s Aviator UAV 200 Inmarsat terminal.” For surface and underwater autonomous and unmanned vessels, Inertial Labs also presented new multi- functional motion reference units, which are ABS-certified and are fully compatible with most commercially available DVLs. They are designed to measure output position, heading, pitch, roll, heave, surge and sway parameters for unmanned surface and underwater vehicles. June/July 2019 | Unmanned Systems Technology TaiSync’s ViuLinx data link units have Ethernet, HDMI and USB interfaces Bell’s Nexus urban air mobility vehicle