Movable Ballast System for Aircraft CG Adjustment
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Solution Overview
Problem
Aircraft face challenges in maintaining the center of gravity (CG) within a desirable envelope due to changes in passenger and cargo loads, requiring adjustments that are often impractical or impossible with fixed ballasts, and temporary ballasts may not be accessible or efficient.
Innovation Solution
A movable ballast system with fore and aft ballast docks that allow pilots to easily add or remove ballasts to adjust the CG, using a housing with channels and stop plates to securely hold movable ballasts, enabling quick adjustments without the need for certified mechanics or temporary ballast materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed ballasts are used to adjust CG, then CG can be manipulated, but removal or addition requires certified mechanics and is often impractical or impossible
Solution Approach 1:
The fixed ballast is divided into multiple removable segments or components that can be easily added or removed by the pilot without requiring mechanical expertise. This segmentation allows the ballast system to maintain its CG manipulation function while dramatically improving accessibility and ease of operation.
2Adaptability or versatility
If temporary ballast is added to adjust CG, then CG can be altered, but the pilot may not have access to temporary ballast at the location or must leave it behind
Solution Approach 1:
The aircraft is equipped with dedicated ballast storage compartments or integrated ballast systems that are always available, eliminating the need for pilots to source temporary ballast at various locations. This universal solution ensures CG adjustment capability is always accessible regardless of the aircraft's location or mission profile.
3Adaptability or versatility
If temporary ballast is used to adjust CG, then CG can be modified, but cargo capacity is compromised due to占用 of cargo space
Solution Approach 1:
The ballast system is integrated into the aircraft structure in a way that utilizes unused structural spaces, compartments, or dimensions that do not interfere with cargo loading areas. This allows ballast to be positioned effectively for CG adjustment while preserving full cargo capacity in the primary cargo bays.
Data Source
AI summary
A movable ballast system for an aircraft includes first and second ballast docks secured to the aircraft. The first ballast dock includes a first housing and a first ballast tray and a first stop plate secured within the first housing. The first ballast tray includes a plurality of channels. The second ballast dock is positioned aft of a CG of the aircraft and includes a second housing and a second ballast tray and a second stop plate secured within the second housing. The second ballast tray includes a plurality of channels. The movable ballast system includes a plurality of movable ballasts, each movable ballast of the plurality of movable ballasts being configured to fit within at least one channel of each of the plurality of channels of the first and second ballast trays.