Aircraft Smoke Generation Device for Wake Vortex Visualization
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Solution Overview
Problem
Existing smoke generation devices for aircraft modify the flight domain and lack control over smoke quantity, making it difficult to study wake vortices effectively and ensure flight safety, especially for new and large aircraft.
Innovation Solution
A smoke generation device with a tank and liquid distribution system located inside the aircraft, using a turbojet's hot gas flow for high combustion efficiency, and adjustable injectors to control the liquid flow, allowing for optimized smoke production and visualization of wake vortices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If smoke generation devices are fixed outside the aircraft (under fuselage or wing assembly), then smoke can be generated for wake vortex visualization, but the aircraft's flight domain is modified and its characteristics change
Solution Approach 1:
The tank containing smoke generating liquid and the liquid distribution means are arranged inside the aircraft fuselage, nesting the smoke generation system within the existing aircraft structure. This eliminates the need for external attachments that would modify the flight domain, while still enabling smoke generation for wake vortex visualization.
2Quantity of substance
If existing smoke generation devices are used, then wake vortices can be visualized, but there is no control over the quantity of smoke produced and therefore smoke length
Solution Approach 1:
The liquid distribution means includes adjustable injectors that can be controlled to vary the liquid flow rate. This dynamic control mechanism allows operators to adjust the quantity of smoke produced and control the smoke length according to the specific requirements of wake vortex visualization, making the system adaptable to different operational conditions.
3Productivity
If smoke generating liquid is injected into turbojet hot gas flow, then high combustion efficiency is achieved, but the injection system becomes complex
Solution Approach 1:
The system utilizes the turbojet's existing hot gas flow as the combustion source, eliminating the need for separate burners or heating systems. The liquid is simply injected into the hot gas flow where it automatically combusts, leveraging the aircraft's existing propulsion system to provide the necessary thermal energy for smoke generation.
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 controlled and efficient smoke generation that optimizes the visualization of wake vortices, ensuring flight safety by allowing for precise characterization of vortex intensity and distance, without altering the aircraft's flight domain.
Implementation Method 1
a smoke generation device with a tank and liquid distribution system located inside the aircraft, using a turbojet's hot gas flow for high combustion efficiency
Implementation Method 2
using a turbojet's hot gas flow for high combustion efficiency
Data Source
AI summary
A smoke generation device for an aircraft which enables viewing of wake vortices of an aircraft over a variable distance without modifying the aircraft flight domain. This is achieved by placing a part of the smoke generation device inside the aircraft and using a liquid flow regulator.