Distributed Cabin Pressure Control Using Avionics Gain Terms
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current aircraft cabin pressure control systems (CPCS) require extensive customization and re-certification for each aircraft type, leading to high development costs and reduced flexibility, as they need to manage cabin pressure to avoid hypoxia and ensure passenger comfort, which is burdensome due to regulatory scrutiny.
Innovation Solution
A distributed CPCS architecture that uses avionics to provide gain terms to CPCS-specific equipment, allowing the same equipment to be used across different aircraft types without hardware or software changes, reducing the need for re-certification and enabling flexible customization of operation for various aircraft applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If CPCS equipment is customized for each aircraft type, then cabin pressure control precision is improved, but device complexity and development costs increase
Solution Approach 1:
The patent implements a universal CPCS equipment design that can be applied across multiple aircraft types without hardware modifications. The system achieves aircraft-specific customization through software configuration parameters (gain terms) rather than physical customization, allowing one piece of equipment to serve multiple functions across different aircraft models.
Solution Approach 2:
The system maintains precision for different aircraft types by changing control parameters (gain terms) rather than modifying the physical system. The processing circuitry receives different gain terms from avionics based on aircraft type, phase of flight, and operational conditions, allowing the same hardware to adapt to different requirements through parameter adjustment.
2Adaptability or versatility
If CPCS equipment is customized for each aircraft type, then operational flexibility is improved, but ease of manufacture and certification process worsen
Solution Approach 1:
The patent creates a universal CPCS platform that maintains operational flexibility through software configuration rather than hardware customization. This approach allows the same equipment to be manufactured once and deployed across multiple aircraft types, significantly reducing certification requirements and manufacturing complexity while preserving adaptability.
Solution Approach 2:
The system uses software copies of control parameters (gain terms) specific to each aircraft type rather than creating physical copies of the entire system. The avionics provide aircraft-specific gain terms to the universal CPCS equipment, enabling customization without replication of hardware, thereby simplifying manufacturing and certification.
3Adaptability or versatility
If gain terms are used to customize CPCS operation, then adaptability across aircraft types is improved, but device complexity increases
Solution Approach 1:
The patent extracts the aircraft-specific customization elements from the physical CPCS hardware and places them in the avionics software. The gain terms are separated from the universal CPCS equipment and stored in avionics, which then provide them as needed. This extraction reduces the complexity of the CPCS equipment itself while maintaining adaptability through software-provided parameters.
Data Source
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.