Lubricants for Electric Powered Aircraft
As the aviation industry moves towards more sustainable and efficient technologies, electric aircraft are becoming an increasingly viable option for short and medium-range flights. This shift introduces unique challenges, particularly in the realm of lubrication. While many current lubrication needs, such as grease and hydraulic fluid applications, remain relevant for electric aircraft, the traditional piston or gas turbine engine will be replaced by an electric motor, with fuel sourced from batteries or potentially hydrogen. Dedicated lubricants will be required to meet the specific needs of these innovative machines.
Enquiries
The Role of Lubricants in Electric Aircraft
Lubricants play a crucial role in the performance and longevity of aircraft components. They reduce friction and vibration, minimise wear, clean components, and help dissipate heat, ensuring smooth and efficient aircraft operation. For electric aircraft, there are additional requirements:
Key Challenges and Requirements
1. Thermal Management: The generation and transfer of electricity for motors necessitate advanced heat management capabilities. Electric motors generate significant amounts of heat that must be effectively managed to prevent overheating and ensure optimal performance. Lubricants used in electric aircraft need to balance cooling efficiency in the powertrain system while providing necessary lubrication for gearboxes.
2. Electrical Conductivity: Unlike traditional aircraft, electric aircraft require lubricants that meet specific electrical conductivity requirements for both fluids and greases.鈥�
3. Gearbox Lubrication: Lubricants must excel in thermal management and provide the necessary lubrication for propeller or rotor gearboxes and powertrains.鈥�
4. Compatibility with Materials: Electric aircraft often incorporate a variety of materials, including lightweight composites and advanced alloys. Lubricants must be compatible with these materials to prevent corrosion and ensure long-term reliability.鈥�
5. Noise Reduction: Electric motors can produce noise that needs to be minimised for passenger comfort and environmental considerations. Specialised greases can help reduce noise through improved damping properties.
At AeroShell, we are collaborating with several manufacturers to develop lubricating solutions for electrically powered aircraft, ranging from eVTOL urban air mobility to regional aircraft.
