Low Altitude Economy : How They Are Driving New Demand for Slip Rings

With the rapid rise of the low-altitude economy, slip rings, as key mechanical and electrical connection components, are gradually becoming an important demand in emerging fields. From electric vertical takeoff and landing (eVTOL) aircraft to drone logistics, from small satellites to ground control systems, slip rings play a crucial role in these high-tech applications.

The low-altitude economy has become a national strategic emerging industry, with policy dividends continuously being released. The Guiding Opinions of the State Council on Accelerating the Development of the Low-Altitude Economy explicitly promote the industrialization of eVTOLs and the large-scale application of drone logistics. According to forecasts by the Civil Aviation Administration of China, the market size of China’s low-altitude economy is expected to reach RMB 1.5 trillion by 2025, exceed RMB 2 trillion by 2030, and further climb to RMB 3.5 trillion by 2035.

At present, the low-altitude economy has formed a practical development path of “first, information; second, cargo; third, passengers”:

• Logistics: SF Technology’s drone operations have cumulatively flown over 4 million kilometers, with cities such as Tianjin and Shenzhen establishing regular drone routes for medical supply delivery.

• Passenger transport: The eVTOL model Shengshi Long completed a cross-sea test flight from Shenzhen to Zhuhai, and EHang’s EH216-S obtained the world’s first eVTOL airworthiness certificate and began commercial operations.

• Infrastructure: Low-altitude electronic fences and satellite-ground integrated communication networks are gradually being improved, providing support for large-scale operational deployment of equipment.

As technology advances, the demand for slip rings in these industries is growing rapidly. Slip rings provide essential power and signal transfer for rotating parts, which are vital for the functionality of eVTOLs, drone systems, and satellite applications.

Electric vertical takeoff and landing aircraft (eVTOLs) are widely seen as the future of urban air mobility. These vehicles require slip rings to transfer power and control signals between their rotating parts and stationary components. Slip rings ensure that eVTOLs maintain optimal performance during takeoff, landing, and flight, ensuring both safety and efficiency.Conductive slip rings play an indispensable role in these systems:

Rotor System Power Supply: Provide continuous and stable power supply to multiple rotors, ensuring smooth takeoff, landing, and flight stability.

Flight Control System: Transmit flight control signals and sensor data in real time, ensuring flight safety and precision.

Reliability in Extreme Environments: In some advanced designs, slip rings used in de-icing systems must operate reliably at speeds up to 20,000 rpm, ensuring aircraft safety in extreme weather conditions. It can be said that the reliability of slip rings is directly related to the safety of manned eVTOL flights.

Drones have become a vital part of modern logistics, especially in package delivery and courier services. In drone systems, slip rings allow for continuous power and data transmission as the drone rotates, ensuring stability and reliability. As drone logistics expand globally, the demand for high-performance slip rings will continue to rise.

Ensuring Real-Time Data Transmission: In inspection and aerial photography missions, slip rings ensure stable real-time transmission of HD video and sensor data, preventing signal interruption or data loss caused by cable twisting. In one industrial drone aerial photography project, slip rings enabled high-speed transmission of power and video signals between the onboard gimbal and the main system, allowing stable HD image capture even in complex environments.

Improving Mission Accuracy: In agricultural spraying drones, slip rings provide stable connections for rotating spray nozzles and sensors, ensuring precise spraying of pesticides or fertilizers and improving operational efficiency. For logistics drones, slip rings ensure smooth data communication between cargo compartment sensors and the control system, reducing flight and delivery risks.

Enabling “Unlimited Rotation”: Traditional cables limit the rotation angle of mechanical structures, while slip rings completely solve this problem. For example, the LPS series slip rings from JINPAT can stably transmit USB, HDMI, Ethernet and other signals at speeds up to 2000 rpm, enabling 360° unrestricted continuous rotation so that monitoring and sensing systems have no blind spots.

Conductive slip rings are widely used in various rotating systems of agricultural machinery, such as center pivot irrigation systems, autonomous tractors, combine harvesters, agricultural drones, and agricultural robots. By installing slip rings in rotating parts, electrical power, control signals, sensor data, and video signals can be transmitted reliably during 360° continuous rotation, preventing cable twisting and damage. This significantly improves the automation level, operational reliability, and working efficiency of agricultural equipment, making slip rings a key component for power and signal transmission in modern smart agricultural machinery.

The rapid growth of the low altitude economy and commercial space is driving unprecedented demand for slip rings. As eVTOLs, drones, and micro-satellites continue to shape the future of transportation and space exploration, the need for efficient and reliable slip rings will only increase. From power transmission to signal connectivity, the development of advanced slip ring technology will directly impact the speed and efficiency of these emerging industries. Looking ahead, the slip ring market is set to experience tremendous growth, fueled by the rise of the low altitude economy and commercial space exploration.