Aircraft Cabin Pressure Control Using Avionics Gain Terms
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Solution Overview
Problem
Existing aircraft cabin pressure control systems (CPCS) require extensive customization and re-certification for each aircraft type, leading to high development costs and reduced flexibility.
Innovation Solution
A distributed CPCS architecture that uses avionics gain terms to customize the operation of CPCS-specific equipment for different aircraft types, allowing the same equipment to be reused without hardware or software changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CPCS equipment is customized for each aircraft type, then the system operates reliably for that specific aircraft type, but development costs and certification requirements increase significantly
Solution Approach 1:
The patent implements a universal CPCS equipment design that can be applied across multiple aircraft types without hardware or software changes. The system achieves this by making the equipment adaptable to different aircraft configurations through standardized interfaces and parameter configurations, eliminating the need for type-specific customization while maintaining operational reliability.
Solution Approach 2:
The system allows different aircraft types to be accommodated by changing operational parameters rather than hardware or software. The CPCS equipment responds to aircraft-specific conditions through adjustable parameters such as pressure targets, flow rates, and control characteristics, enabling the same physical equipment to optimize performance across diverse aircraft platforms.
2Ease of manufacture
If CPCS equipment is reused across different aircraft types, then development costs are reduced, but the difficulty of adapting to different aircraft configurations increases
Solution Approach 1:
The patent designs CPCS equipment with universal applicability across different aircraft types. The system incorporates standardized mechanical, electrical, and software interfaces that enable the same equipment to be installed and operated on various aircraft without modification, while still adapting to different operational requirements through configurable parameters.
Solution Approach 2:
The system employs dynamic adaptation mechanisms that allow the CPCS equipment to adjust its operation based on the specific aircraft type. Through programmable control logic and adjustable parameters, the equipment dynamically configures itself to match the characteristics of the installed aircraft, maintaining adaptability without requiring physical customization.
3Reliability
If formal re-certification is performed for each aircraft type, then regulatory compliance is ensured, but time and investment requirements increase
Solution Approach 1:
The patent enables a single certification of CPCS equipment to cover multiple aircraft types. By demonstrating that the equipment maintains consistent safety and performance characteristics across different applications through standardized designs and rigorous testing, the system achieves broad regulatory approval without requiring separate certification processes for each aircraft type.
Data Source
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AI summary
A distributed aircraft cabin pressure control system (CPCS), and techniques for interfacing the distributed CPCS to avionics. The CPCS-specific equipment of this disclosure is used in a variety of different type aircraft with no hardware or software change for each aircraft type. In this manner, CPCS-specific equipment is used in different type aircraft without the need for formal re-certification of the CPCS-specific equipment. The CPCS-specific equipment may operate with limited, and fixed, functionality and control algorithms in its hardware and software that would not change from airplane application to application, but it would instead use "gain terms" transmitted from the avionics. The distributed CPCS processes in the various avionics modules may send information to the CPCS-specific equipment that customizes the operation of the CPCS-specific equipment to that specific aircraft type.