Method for controlling a drive system

The control procedure for an aircraft drive system addresses the challenge of preventing overthrusts by limiting thrust or output based on operational parameters and leaf positions, thereby enhancing safety during critical operations.

WO2025067830A1 Publication Date: 2025-04-03ROLLS ROYCE DEUT LTD & CO KG
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Patent Information

Application Number
PCT/EP2024/074638
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-25
Filing Date
2024-09-04
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Existing aircraft drive systems face challenges in preventing unintentional strong thrusts, known as overthrusts, which can occur due to sensor failures or defects, posing a safety risk, especially during critical operations like landing.

Method used

A control procedure for an aircraft drive system that captures operational parameters and leaf positions to determine the current operating state. Based on this determination, the system limits the maximum thrust or output of the electrical drive unit to prevent overthrust, while allowing pilots to override this limitation when necessary.

Benefits of technology

The solution effectively prevents overthrusts by limiting the thrust or output of the electrical drive unit during critical operating states, thereby enhancing safety and reducing the risk of unintentional flight movements.

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Abstract

A method for controlling a drive system (1, 1') of an aircraft (2, 2'), comprising the following steps carried out by a control system (12) of the drive system (1, 1'): detecting (S10) at least one parameter which describes the operation of the drive system (1, 1'), and detecting at least one blade position of at least one blade (103, 210) of the aircraft (2, 2'); determining (S11) an operating state of the aircraft (2) using the at least one detected parameter and the at least one detected blade position; and operating (S12) at least one electric drive unit (10) of the drive system (1, 1') on the basis of a maximum value, predefined for the determined operating state, of a thrust and / or a power output of the at least one electric drive unit (10) of the drive system (1, 1').
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