Parachute Ejection Actuator Layout for Flexible UAV Mounting
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Solution Overview
Problem
Existing parachute safety apparatuses for aerial vehicles lack diversity in attachment positions and ease of accommodating ejected objects, limiting their versatility and ease of use.
Innovation Solution
A safety apparatus with a sliding member, actuator, and container design that allows attachment to various positions on the aerial vehicle, featuring a shifted actuator placement and separate housings for pilot chute and main parachute, along with a trigger device for automatic activation in abnormal states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the actuator is positioned at the geometric center of the container bottom surface, then the structure is symmetric and stable, but the ejected object cannot be accommodated easily and attachment position diversity is limited
Solution Approach 1:
The actuator is positioned at a location shifted from the geometric center of the container's bottom surface. This asymmetric positioning allows the ejected object to be accommodated more easily while maintaining structural stability, and enables diverse attachment positions on the aerial vehicle without requiring complex reconfiguration of the actuator system.
2Volume of moving object
If the container accommodates all components in a compact arrangement, then the device size is reduced, but the ejected object accommodation becomes difficult
Solution Approach 1:
The container is designed with an elongated shape extending in a specific direction from the actuator positioning direction. This dimensional arrangement creates sufficient space within the container to accommodate the ejected object easily, while maintaining a compact overall device size. The elongated configuration optimizes space utilization without compromising accessibility or accommodation ease.
3Stability of the object's composition
If the safety apparatus is designed for centralized attachment, then the structural balance is improved, but the versatility for different aerial vehicle configurations is reduced
Solution Approach 1:
The safety apparatus is designed with universal attachment capabilities that allow it to be installed at multiple positions on the aerial vehicle. The asymmetric actuator positioning and elongated container design enable the apparatus to maintain structural balance and operational effectiveness regardless of attachment location, providing flexibility for different aerial vehicle configurations and mission requirements.
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
Enhances safety performance by providing diverse attachment options and improved object accommodation, reducing air resistance, and suppressing power consumption.
Implementation Method 1
a gas generator that moves the piston member in the cylinder
Data Source
AI summary
There are provided an actuator that can be reduced in weight as compared with a related art while alleviating an impact at an activation, a safety apparatus that ejects an ejected object, and an aerial vehicle including the safety apparatus. A safety apparatus 100 includes an actuator 1, a push-up member 15 that is pushed up in one direction by the actuator 1, an ejected object 16 that is pushed up while being supported by the push-up member 15, a bottomed cylindrical container 18, and a lid 21 that closes an opening end of the container 18. The actuator 1 includes a piston member 10, a cylinder 14 that accommodates the piston member 10 and is provided with a bore 13 through which the piston member 10 protrudes outward at the time of activation, a base 2 to which one end of the cylinder 14 is caulked and fixed and that is attached to a center of a bottom inside the container 18, and a gas generator 17 as a power source for moving the piston member 10 in the cylinder 14.