Aircraft Static Pressure Sensor Acoustic Error Correction
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Solution Overview
Problem
Aircraft static pressure sensors experience inaccuracies due to acoustic disturbances and airflow bleeding, leading to suboptimal aircraft operation.
Innovation Solution
A system comprising static pressure sensors, acoustic sensors, and a processor that corrects static pressure data by determining and compensating for acoustic and dynamic pressure errors using data from both sensors, ensuring accurate environmental pressure measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If static pressure sensors are used to measure environmental pressure, then pressure measurement capability is provided, but measurement precision deteriorates due to acoustic disturbances and airflow bleeding
Solution Approach 1:
An acoustic sensor is introduced as an intermediary device to detect acoustic disturbances that affect the static pressure sensor. The acoustic sensor measures the acoustic component separately, allowing the system to subtract this interference from the pressure sensor reading, thereby improving measurement precision without requiring changes to the pressure sensor itself.
Solution Approach 2:
The system uses feedback by continuously monitoring acoustic levels with the acoustic sensor and using this information to correct the static pressure sensor readings in real-time. The processor adjusts the pressure measurements based on the acoustic disturbance levels detected, creating a closed-loop correction system that maintains accuracy despite varying acoustic conditions.
2Measurement precision
If acoustic sensors and correction processing are added, then measurement precision improves, but device complexity increases
Solution Approach 1:
The acoustic sensor serves multiple functions: it detects acoustic disturbances affecting pressure measurements, provides data for correction algorithms, and can potentially be used for other acoustic monitoring purposes in the aircraft. This multi-functionality justifies the addition of the sensor by maximizing its utility beyond单一的 acoustic detection.
Solution Approach 2:
The system replaces complex mechanical isolation methods with a sensor-based correction approach. Instead of designing elaborate physical barriers to prevent acoustic interference, the invention uses electronic sensing and software-based correction, which is less mechanically complex and more adaptable to varying conditions.
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
The system provides accurate static pressure readings by effectively mitigating errors caused by acoustic disturbances and airflow, thereby enhancing aircraft operation and control.
Implementation Method 1
an acoustic sensor configured to provide acoustic data in response to the acoustic disturbance
Implementation Method 2
a static pressure sensor disposed within the port and configured to provide primary pressure data in response to at least environmental air pressure
Data Source
AI summary
Various techniques are provided for correcting error in static pressure data. In one example, a system includes an aircraft component. The aircraft component can include a port disposed within the aircraft component. A static pressure sensor is disposed within the port. The static pressure sensor is configured to provide primary pressure data in response to environmental air pressure. The data provided can include error due to acoustic disturbance. The system can also include an acoustic sensor configured to provide acoustic data in response to the acoustic disturbance. Data from the static pressure sensor and the acoustic sensor can be provided to a processor communicatively coupled to the static pressure sensor and the acoustic sensor. The processor can be configured to determine corrected static pressure data using the provided primary pressure data and the provided acoustic data. Additional systems and similar methods are also provided.