Wake Vortex Tracking for Fuel-Saving Formation Flight Comfort
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems for aircraft formation flight do not adequately address passenger discomfort caused by wake vortices, which can lead to turbulence and increased fuel consumption, especially during sudden maneuvers or changes in wind gradients.
Innovation Solution
A wake vortex tracking assistance system using electronic circuitry on board follower aircraft to determine the estimated position and uncertainty of wake vortices, calculate optimal trajectories to benefit from ascending airflow while avoiding discomfort zones, and adjust flight paths based on real-time sensor data and predictive modeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the follower aircraft positions itself close to the wake vortex to benefit from upward airflow, then fuel consumption is reduced, but passenger comfort deteriorates due to turbulence and discomfort
Solution Approach 1:
The system calculates an estimated position of the wake vortex in advance using a wake vortex model and sensor data, and determines a discomfort window around this estimated position before the aircraft actually encounters turbulence. This allows the flight path to be planned proactively to avoid the discomfort zone while still benefiting from the upward airflow at optimal distances.
Solution Approach 2:
The system continuously receives sensor data from the follower aircraft, updates the estimated wake vortex position and discomfort window in real-time, and adjusts the flight path accordingly. This closed-loop feedback mechanism ensures the aircraft maintains optimal positioning relative to the wake vortex while avoiding turbulence zones.
2Use of energy by moving object
If the follower aircraft maintains a fixed optimal position relative to the wake vortex, then fuel efficiency is improved, but reliability deteriorates during sudden disruptive events such as lead aircraft maneuvers or wind changes
Solution Approach 1:
The system dynamically updates the estimated wake vortex position and discomfort window based on real-time sensor data and wake vortex model predictions. Instead of maintaining a static optimal position, the flight path is continuously adjusted to track the moving wake vortex while respecting dynamic discomfort constraints, enabling adaptation to sudden events like lead aircraft maneuvers or wind gradient changes.
3Object-affected harmful factors
If the system uses a large safety margin from the wake vortex to ensure passenger comfort, then comfort is improved, but fuel consumption increases due to suboptimal positioning
Solution Approach 1:
The system defines a localized discomfort window around the estimated wake vortex position based on uncertainty analysis, rather than applying a uniform safety margin. This allows the aircraft to fly closer to the wake vortex in regions where the discomfort probability is low, while maintaining larger margins only where needed, thus optimizing the balance between fuel efficiency and passenger comfort.
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 improves passenger comfort by minimizing turbulence and reducing fuel consumption by optimizing aircraft positioning relative to wake vortices, even during sudden events like maneuvers or wind changes.
Implementation Method 1
Wake vortices, also known as wingtip vortices or wingtip vortices, are counter-rotating wake turbulence at the wingtips of an aircraft in flight due to a pressure difference between the lower and upper surfaces of the wings
Implementation Method 2
determining an effect of the wake vortex experienced by the follower aircraft as a difference between measurements, carried out by sensors of the follower aircraft, and a modeling of the follower aircraft in a wake vortex-free environment
Implementation Method 3
by controlling their position relative to the wake vortices, the follower aircraft can benefit from an upward airflow phenomenon induced by the wake vortices, thus reducing drag and fuel consumption
Data Source
Figure 1
Figure 2~4
Figure 5
AI summary
A formation flight assistance system (120), installed on a follower aircraft, determines an estimated position of a wake vortex generated by a lead aircraft and inducing an updraft from which the system (120) aims to benefit the follower aircraft. The system (120) determines a first trajectory, intended to be followed by the follower aircraft, as the approach and follow path to the wake vortex while remaining outside a window of potential discomfort. The system (120) determines a second trajectory corresponding to a ghost aircraft as if the follower aircraft were constantly in an optimal position relative to the wake vortex. The system (120) evaluates future overshoots of the ghost aircraft in relation to the maneuvering capabilities of the follower aircraft and passenger comfort rules. The system (120) may modify the first trajectory based on the evaluated overshoots.