Ground vibration testing of NASA’s X-57 Maxwell electric aircraft
Electric propulsion is spawning aircraft with diverse and novel configurations. The multiple motors, rotors, propellers and fans associated with distributed electric propulsion are shaping many complex and unusual forms in the quest to enhance lift and thrust, and to reduce drag through close aerodynamic coupling with airframes. One of the most important processes in their development is ensuring that they don’t suffer from damaging vibration. To that end, NASA has used equipment from Hottinger Bruel & Kjær (HBK) to collect and process accelerometer data in ground vibration testing (GVT) for its X-57 Maxwell aircraft.
ABB plans fast-charger network for electric aircraft
As with cars and trucks, electric aircraft need access to an extensive network of reliable fast chargers, and in October it was announced that ABB is to develop a megawatt fast-charging infrastructure for Lilium’s short-haul electric jet
DSD software optimises e-aircraft powertrain designs
In early August, electrified propulsion engineering consultancy Drive System Design (DSD) revealed that it is working on optimising the propulsion systems for electric aircraft as part of the Driving the Electric Revolution (DER) challenge at UK Research and Innovation. The initial study is intended to evaluate powertrain technology that could be used on a range […]
The EV battery industry offers a variety of ways to minimise the hazards they can pose, as Peter Donaldson explains. Proximity to large amounts of energy has always presented hazards, but people have mostly learned to live with them and enjoy its benefits. However, being close to a high-energy electrochemical system such as a 100 kWh battery is still...
Hyundai and ANRA Technologies launch partnership to develop advanced air traffic operating environment
The Urban Air Mobility Division of Hyundai Motor Group has announced a new partnership with ANRA Technologies, a leading provider of end-to-end UAV and traffic management solutions, to begin developing an operating environment for the advanced air mobility (AAM) industry. This is the first in a series of air traffic management partnerships Hyundai plans to […]
Eviation unveils its production all-electric Alice aircraft as it prepares for inaugural flight
Eviation Aircraft, a global manufacturer of all-electric aircraft, has unveiled the design for its Alice all-electric aircraft, which is on track for first flight later this year. The production configuration defines Alice’s path to certification, and entry into service is expected in 2024. The Alice can carry nine passengers and two crew members. It is […]
Superconducting aircraft motors
Power density and power-toweight ratio have always been very near the top of the list of essential attributes for aircraft propulsion systems, particularly in those elements that work at the sharp end of converting stored chemical energy into thrust (writes Peter Donaldson). Rockets aside, the gas turbine engine has yet to be beaten in this respect. In the electrified...
Nick Flaherty highlights some of the inroads developers are making into rolling out a range of hydrogen-powered vehicles. Many of the engineering challenges with converting hydrogen to electricity to drive a motor in a vehicle have been addressed over the past decade through the development...
Axial flux motors
Axial flux motors have many EV design advantages over their radial flux counterparts, as Nick Flaherty explains. A new type of motor is gaining traction in the e-mobility sector – the axial flux type. For many years they have been used in stationary applications such as elevators and agricultural machinery, but over the past decade a number of developers have been working on improving...
Bus is on route to the future
Daimler has developed an electric bus platform that will accommodate the next generation of batteries and fuel cells (writes Nick Flaherty). The powertrain of the eCitaro bus is based on the proven ZF AVE 130 electric axle, with 125 kW electric motors at the wheel hubs providing...