Antenna Element Holder Nesting for Launch Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antenna devices face challenges in accommodating element holders in a compact manner while withstanding launch impacts, and maintaining the position of these holders during launch.
Innovation Solution
The antenna device includes an extension shaft member, element holders with concave and convex portions, and a holding member to maintain compact accommodation and prevent positional changes during launch impacts, featuring a deployable structure with element guides and a lid member for smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If element holders are accommodated in a compact manner, then the antenna device can be stored in a smaller space, but the position of element holders may change due to impact during launch
Solution Approach 1:
The element holders are nested within the extension shaft member, with each element holder containing concave portions that receive convex portions of adjacent element holders. This nesting arrangement enables compact accommodation while the interlocking convex-concave features prevent relative movement and maintain positional stability during launch impacts.
Solution Approach 2:
The antenna device is segmented into multiple element holders that can be independently positioned along the extension shaft member. Each element holder is a separate component with standardized convex-concave coupling features, allowing compact stacking during accommodation while maintaining individual position control through the interlocking mechanism.
2Stability of the object's composition
If element holders are fixed to prevent positional changes, then stability during launch is improved, but the ability to extend and deploy antenna elements is restricted
Solution Approach 1:
The element holders are designed with dynamic characteristics, transitioning from a stable nested configuration during launch to an extended deployed configuration in space. The convex-concave coupling allows controlled movement along the extension shaft member while preventing lateral displacement, enabling both stability during transport and adaptability during deployment.
Solution Approach 2:
The element holders are pre-positioned in a compact nested state within the extension shaft member before launch. The convex portions of each element holder are preliminarily engaged with the concave portions of adjacent holders, establishing a stable initial configuration that can subsequently be extended to the deployed state without requiring complex fastening mechanisms.
3Volume of moving object
If multiple element holders are stacked compactly, then accommodation efficiency is improved, but interference between adjacent element holders may occur
Solution Approach 1:
The element holders are nested within the extension shaft member in a compact stacked arrangement. The convex portion of each element holder fits into the concave portion of the adjacent holder, creating a telescopic nested structure that maximizes accommodation efficiency while the interlocking features prevent interference and maintain proper spacing between elements.
Data Source
AI summary
An element holder supporting an antenna element can be accommodated in a compact manner in an accommodated state and held such that the position thereof does not change due to an impact or the like, including at launch. An antenna device can be in an accommodated state of being accommodated in a casing and a deployed state of extending outside the casing. The antenna device includes an extension shaft member to extend from inside the casing in an axial direction, element holders movable along the extension shaft member, and a deployable antenna element. The element holder includes a concave portion formed in one surface of the element holder and a convex portion formed in another surface of the element holder. In the accommodated state, the convex portion of one of the element holders adjacent to each other enters into the concave portion of the other of the element holders.