Redundant Flight Control Architecture for Low-Voltage Bus Failures
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Solution Overview
Problem
Aircraft components can malfunction during flight, leading to unsafe conditions that compromise safety and operability.
Innovation Solution
Implementing a redundant flight control system with multiple redundant control surfaces, actuators, and low voltage buses that ensure continued operability even if one component fails, using a network of sensors and controllers to manage and reroute commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant flight control components are implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
The flight control system is divided into multiple independent control surfaces (ailerons, elevators, rudders) that can be individually controlled through separate actuators and control links. This segmentation allows the system to maintain functionality even if one segment fails, as other segments can compensate. The control system is further segmented into multiple flight control computers that can independently process control signals.
Solution Approach 2:
Different parts of the control system have specialized functions tailored to their specific roles. Each control surface has dedicated actuators and control links optimized for its movement requirements. The flight control computers have specialized processing capabilities for different types of control signals and failure scenarios, allowing each component to operate at optimal performance for its specific function.
2Reliability
If multiple redundant low voltage buses are used, then reliability is improved, but device complexity increases
Solution Approach 1:
The electrical power distribution system is segmented into multiple independent low voltage buses that can operate autonomously. Each bus serves specific flight control components, and the buses are electrically isolated from each other. This segmentation ensures that a failure in one bus does not propagate to other buses, maintaining system reliability through electrical independence.
Data Source
AI summary
A system and method for flight control of an aircraft, the flight control system including a plurality of flight components coupled to an aircraft, wherein the plurality of flight components includes a plurality of redundant control surfaces, a plurality of redundant low voltage buses communicatively connected to the plurality of flight components, wherein a failure in a redundant low voltage bus of the plurality of redundant low voltage busses does not impact the operability of the aircraft.