ACARS Fuel Advisories Using Tail-Specific Aircraft Performance Offsets
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Solution Overview
Problem
Conventional systems for providing fuel efficiency advisories to flight crews require manual input of flight information, increasing workload and dependency on portable devices, which hinders their adoption and effectiveness.
Innovation Solution
Utilizing ACARS messages to automatically transmit aircraft performance data to a ground station, where a ground computing system determines tail-specific offsets and generates advisories for target parameter values, such as speed and altitude, which are then uplinked to the aircraft for presentation to the flight crew without the need for manual input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional systems use EFB or portable electronic display to provide fuel efficiency advisories, then advisories can be provided to flight crew, but flight crew workload increases and dependency on portable devices is required
Solution Approach 1:
The system enables self-service by automatically extracting flight information from existing ACARS messages and flight management systems without requiring flight crew manual input. The ground-based system autonomously processes data, calculates target parameter values, and generates advisories, eliminating the need for crew interaction with portable devices while reducing workload.
Solution Approach 2:
A ground-based intermediary system is introduced to mediate between the aircraft's flight management system and the flight crew. This intermediary automatically receives ACARS messages, processes flight data, determines target parameter values using tail-specific offsets, and provides advisories back to the aircraft, eliminating the need for crew to manually operate portable electronic devices.
2Productivity
If manual entry of flight information is required to provide advisories, then advisories can be generated, but flight crew workload increases
Solution Approach 1:
The system performs preliminary actions by automatically extracting and processing flight information from ACARS messages before advisories are needed. Flight data is pre-processed, target parameter values are calculated in advance using tail-specific offsets, and advisories are prepared ready for transmission, eliminating the time loss associated with manual data entry during critical flight phases.
Solution Approach 2:
The manual mechanical process of flight crew entering flight information is replaced with an automated electronic system. The ground-based system automatically extracts data from digital ACARS messages, processes it through computational algorithms, and generates advisories electronically, substituting manual operations with automated information processing to improve productivity and eliminate time loss.
3Measurement precision
If tail-specific offsets are used to determine target parameter values, then fuel efficiency accuracy is improved, but data processing complexity increases
Solution Approach 1:
The system improves measurement precision by introducing tail-specific offset parameters that account for individual aircraft performance variations. These parameters are applied to target parameter value calculations to compensate for deviations from baseline performance, enabling more accurate fuel efficiency advisories tailored to each specific aircraft's characteristics without requiring complex hardware modifications.
Data Source
AI summary
The present disclosure provides techniques for leveraging Aircraft Communications, Addressing and Reporting System (ACARS) messages to provide advisories to a flight crew in order to encourage fuel savings and reduction of carbon emissions. In one aspect, a downlink ACARS message is transmitted by an aircraft in flight to a ground station. Parameter values from the downlink ACARS message are extracted. A target parameter value for the aircraft is determined based on the extracted parameter values and a tail specific offset. The tail specific offset indicates a deviation of an actual aircraft performance of the aircraft from a baseline aircraft performance for the aircraft. An uplink ACARS message containing the determined target parameter value is transmitted to the aircraft in flight. An advisory suggesting the target parameter value is presented to a flight crew of the aircraft.