Dual Pressure Regulating Valve for Aircraft Deicing
Solution Overview
Problem
Current anti-icing and deicing systems for aircraft components face challenges in temperature variability due to engine bleed air, leading to overdesign with expensive and heavy materials, and limitations in using composite materials due to high-temperature issues.
Innovation Solution
A deicing system with dual pressure regulating valves that selectively switch between low and high mass flow settings based on engine conditions, compressor pressure, RPM, and atmospheric factors, allowing for precise temperature control and extended composite material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a single pressure regulating valve is used to supply bleed air to the deicing system, then the pressure can be maintained at a constant level, but the temperature varies significantly based on engine operating conditions
Solution Approach 1:
The patent applies dynamics by implementing a dual pressure regulating valve system that can dynamically switch between high-pressure and low-pressure settings based on engine operating conditions. The system transitions from a static single-pressure valve to a dynamic multi-pressure valve system that adapts to varying temperature conditions, thereby maintaining both pressure stability and temperature control.
Solution Approach 2:
The patent applies parameter changes by introducing a dual pressure regulating valve system that can change the pressure parameter of bleed air based on temperature conditions. The system switches between high-pressure (for colder conditions) and low-pressure (for hotter conditions) settings, effectively using pressure parameter adjustment to compensate for temperature variations and achieve precise thermal management.
2Reliability
If high-temperature resistant materials are used to withstand maximum possible temperatures, then component reliability is improved, but the system becomes overdesigned for normal conditions and weight increases
Solution Approach 1:
The patent applies dynamics by implementing a dual pressure regulating valve system that can dynamically switch between high-pressure and low-pressure settings based on engine operating conditions. The system transitions from a static single-pressure valve to a dynamic multi-pressure valve system that adapts to varying temperature conditions, thereby maintaining both pressure stability and temperature control.
Solution Approach 2:
The patent applies parameter changes by introducing a dual pressure regulating valve system that can change the pressure parameter of bleed air based on temperature conditions. The system switches between high-pressure (for colder conditions) and low-pressure (for hotter conditions) settings, effectively using pressure parameter adjustment to compensate for temperature variations and achieve precise thermal management.
3Weight of moving object
If composite materials are used in aircraft structures, then weight is reduced, but they cannot withstand high sustained temperatures from bleed air
Solution Approach 1:
The patent applies parameter changes by introducing a dual pressure regulating valve system that can change the pressure parameter of bleed air based on temperature conditions. The system switches between high-pressure (for colder conditions) and low-pressure (for hotter conditions) settings, effectively using pressure parameter adjustment to compensate for temperature variations and achieve precise thermal management.
Solution Approach 2:
The patent applies feedback by implementing a control system that monitors engine operating conditions and atmospheric conditions, then adjusts the pressure regulating valve settings accordingly. This feedback mechanism ensures that the bleed air temperature remains within safe limits for composite materials, enabling their use in deicing applications.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise thermal management, reducing material costs and weight while allowing for the use of lighter composite materials in aircraft structures by adjusting bleed air flow to match varying temperature conditions.
Implementation Method 1
A first dual pressure regulating valve may be in fluid communication with the bleed air supply line. The first dual pressure regulating valve may selectively operate between a low pressure setting configured to supply a relatively low mass flow of bleed air to an aircraft component, and a high pressure setting configured to supply a relatively high mass flow of bleed air to the aircraft component.
Implementation Method 2
Engine bleed air may supply hot pressurized air to the deicing system and be applied on the backside of surfaces that may form ice in order to heat the surfaces.
Implementation Method 3
Engine bleed air may supply hot pressurized air to the deicing system and be applied on the backside of surfaces that may form ice in order to heat the surfaces.
Data Source
AI summary
A deicing system for an aircraft may comprise a dual pressure regulating valve. The dual pressure regulating valve may comprise a low pressure setting and a high pressure setting. The low pressure setting may supply a relatively lesser supply of bleed air to an aircraft component, and the high pressure setting may supply a relatively greater supply of bleed air to the aircraft component. The dual pressure regulating valve may be switched between the low pressure setting and the high pressure setting based on aircraft or atmospheric conditions to prevent heat damage to the aircraft component.