Leonardo has been granted a patent for a hybrid propulsion system for helicopters, integrating a combustion engine and electric motor to stabilize flight. The system features controllers that manage torque and speed, optimizing efficiency and maintaining the desired flight attitude set by the pilot. GlobalData’s report on Leonardo gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Leonardo, Light-weight composite fuselage was a key innovation area identified from patents. Leonardo's grant share as of June 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.
Hybrid propulsion system for helicopter stability and efficiency
The patent US12043374B2 describes a hybrid propulsion system designed for helicopters, integrating both a combustion engine (VM) and an electric motor (EM) to enhance flight stability and efficiency. The system features controllers that manage the drive shaft connected to the main rotor, ensuring that the helicopter maintains a stable flight attitude as set by the pilot. The VM is equipped with a controller that adjusts fuel supply to optimize propulsive power, while the EM controller can either discharge or recharge a battery based on mechanical power application. The system includes torque sensors and tachometers to continuously monitor speed and torque, allowing both controllers to maintain optimal performance by adapting their outputs in real-time.
Additionally, the hybrid system incorporates features such as a direct data signal line between the pilot and VM controllers for critical phases like take-off and landing, and measurement devices for fuel and battery levels to inform the EM controller. The method of operation involves continuous monitoring of speed and torque, with the EM controller responding more rapidly to deviations from preset values compared to the VM controller. This ensures that the VM can achieve optimal efficiency while the EM manages energy flow, particularly during take-off and landing to minimize noise and emissions. The system also includes provisions for energy management, allowing for adjustments in operation to protect the battery and conserve fuel, thereby enhancing the overall environmental performance of the helicopter.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
