Rotatable UAV Cargo Bay for Top Loading and Bottom Unloading
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Solution Overview
Problem
Existing unmanned aerial vehicles (UAVs) face challenges in efficiently loading and unloading payloads due to limited access and orientation of cargo bays, which complicates autonomous operation and payload delivery.
Innovation Solution
A rotatable cargo bay system in the fuselage of the UAV, controlled by an actuator, allows for the cargo bay to rotate into different positions for payload entry, transport, and exit, enhancing accessibility and efficiency in payload handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cargo bay is fixed in position within the fuselage, then the structural simplicity is maintained, but the payload loading and unloading efficiency deteriorates due to limited access
Solution Approach 1:
The cargo bay is made rotatable about a pivot axis, transforming it from a static structure to a dynamic one. This allows the cargo bay to change its orientation and position relative to the fuselage, enabling efficient payload loading from above and unloading from below while maintaining structural simplicity through a single rotational degree of freedom
2Ease of operation
If the cargo bay entrance is always accessible from above, then the payload loading is simplified, but the payload unloading capability deteriorates due to inability to access from below
Solution Approach 1:
The rotatable cargo bay can dynamically reposition its entrance from an upper position (for loading) to a lower position (for unloading). This dynamic reconfiguration enables the system to adapt to different operational phases, providing ease of operation during loading while achieving versatility in payload delivery locations
Solution Approach 2:
The cargo bay utilizes the vertical dimension by rotating about a horizontal pivot axis. This allows the entrance to move between upper and lower positions, adding a dimensional aspect to payload accessibility that enables both top-loading and bottom-unloading capabilities
3Measurement precision
If the cargo bay rotates during flight, then the payload delivery precision is improved, but the flight stability deteriorates due to moving mass
Solution Approach 1:
The cargo bay is rotated to the desired delivery position before payload release. This preliminary positioning ensures that when the payload is dropped, the cargo bay is already oriented correctly, allowing for precise delivery to the target location while maintaining flight stability during the actual release moment
Data Source
AI summary
A UAV including a wing attached to a fuselage body, a rotatable cargo bay in the fuselage body, the cargo bay having an entrance for receiving the payload, an actuator in the fuselage body operable to rotate the cargo bay about a pivot axis into a first position where the entrance of the cargo bay is positioned above the fuselage body to allow for entry of the payload into the cargo bay, and the cargo bay extends through an opening in an upper surface of the fuselage body, rotatable into a second position where the entrance of the cargo bay is positioned within the fuselage body during transport; and rotatable into a third position where the entrance of the cargo bay is positioned below the fuselage body to allow for exiting of the payload, and the cargo bay extends through an opening in a lower surface of the fuselage body.