Adjustable Drag-Reducing Structure for Container Ship Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cargo ships experience significant drag forces due to the vertical sides of shipping containers, leading to poor fuel consumption and high operational costs, as they were not designed with aerodynamics in mind, and replacing them is not economically feasible.
Innovation Solution
A method and structure for generating an optimal drag-reducing shape using working parameters and an algorithm to create a bespoke structure that redirects airflow, reducing turbulent drag forces by attaching it to the cargo ship via tensioned cables or bolts, utilizing inflatable structures and materials like polymeric fabric and metal sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If cargo ships use traditional container stacking with vertical sides, then cargo capacity is maximized, but drag forces increase significantly
Solution Approach 1:
A drag-reducing structure is introduced as an intermediary component between the oncoming airflow and the cargo containers. This structure redirects airflow over the top of the containers rather than allowing direct impact against vertical sides, thereby reducing drag forces while preserving cargo capacity
Solution Approach 2:
The drag-reducing structure employs curved or rounded surfaces instead of sharp vertical edges. The curved geometry smoothly guides airflow over the cargo containers, reducing turbulence and pressure drag while maintaining the same cargo holding capability
2Use of energy by moving object
If new aerodynamic ship designs are created, then fuel consumption improves, but investment cost increases
Solution Approach 1:
The aerodynamic improvement is segmented into a separate, detachable drag-reducing structure rather than requiring complete ship redesign. This modular approach allows existing ships to benefit from aerodynamic improvements without the high cost of building entirely new vessels
Solution Approach 2:
The drag-reducing structure is designed to be adaptable and adjustable, allowing it to be configured for different ship types and cargo arrangements. This flexibility reduces the need for multiple specialized designs, thereby lowering overall investment costs while maintaining fuel efficiency benefits
3Force
If drag-reducing structures are added to existing ships, then aerodynamic performance improves, but structural complexity increases
Solution Approach 1:
The drag-reducing structure utilizes flexible materials such as polymeric fabric or thin metal sheets that can be tensioned into shape rather than requiring rigid, complex frameworks. This approach achieves the desired aerodynamic form with simpler, lighter construction
Solution Approach 2:
The structure employs tensioned cables, inflatable elements, or hydraulic tensioning systems to maintain the aerodynamic shape without requiring heavy rigid support structures. This pneumatic/hydraulic approach reduces structural complexity while preserving drag-reducing functionality
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 solution effectively reduces drag forces by optimizing airflow, improving fuel efficiency and reducing environmental impact, while being adaptable to specific ship designs and conditions, and can be retrofitted to existing vessels.
Implementation Method 1
The drag-reducing structure redirects air away from areas of the vehicle where turbulent airflow would occur
Implementation Method 2
A drag-reducing structure reduces the turbulent airflow around a vehicle in order to reduce the drag forces exerted on the vehicle
Data Source
AI summary
A structure (1050, 1060) for reducing drag force exerted on a ship. The structure comprises a support structure (1050-2), (1060-2) and a surface cover (1010-3). The support structure is attachable to the ship and is connected to the surface cover to provide and maintain a structure shape. which is configured to reduce drag forces exerted on the ship. The support structure is adjustable.