Cable-Driven Telescopic Boom With Continuous Tension Nesting
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Solution Overview
Problem
Conventional deployable booms are complex, prone to failure, and require complex deployment mechanisms, making them difficult to deploy and maintain.
Innovation Solution
A cable-driven telescopic boom system with nested segments that utilize continuous tension cables to deploy and retract segments, eliminating the need for significant pretensioning and allowing for tight nesting and easy deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional deployable booms use lead screw or hydraulic mechanisms, then deployment capability is achieved, but device complexity increases and reliability decreases
Solution Approach 1:
The patent extracts the complex lead screw and hydraulic mechanisms from the boom deployment system, replacing them with a simplified cable-driven mechanism. The continuous cable engages multiple boom segments directly, eliminating the need for intermediate mechanical components and reducing overall system complexity while maintaining deployment capability.
Solution Approach 2:
Instead of using active mechanisms (lead screws, hydraulics) to push boom segments outward, the invention uses passive cable tension that pulls segments together. The cable is anchored to the innermost segment and wrapped around outer segments, creating a self-contained deployment system where tension naturally drives the telescoping action without complex actuators at each segment.
2Ease of operation
If conventional deployable booms use multiple mechanisms, then deployment function is achieved, but reliability decreases due to more failure points
Solution Approach 1:
The patent removes multiple potential failure points by extracting lead screw mechanisms, hydraulic systems, and individual segment actuators. The simplified cable-driven system has fewer moving parts and connection points, directly improving reliability while maintaining the deployment function through the continuous cable engaging all segments.
3Volume of moving object
If boom segments are designed for tight nesting, then stowed size is reduced, but cable-driven system requires significant pretensioning causing self-deploying behavior
Solution Approach 1:
The patent applies partial pretensioning to the cable rather than significant pretensioning. The cable is tensioned enough to maintain tight nesting between boom segments during stowed configuration, but not so much that it causes self-deploying behavior. This balanced approach allows tight nesting while maintaining deployment control through the restraint mechanism.
4Ease of operation
If conventional booms use complex mechanisms, then deployment capability is achieved, but ease of maintenance decreases
Solution Approach 1:
The patent extracts complex mechanical mechanisms that require extensive maintenance. The cable-driven system with its simple continuous cable and minimal engagement points eliminates the need for maintaining lead screw threads, hydraulic seals, and multiple actuators. This simplification directly improves ease of maintenance while preserving deployment capability.
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 system provides a simple, reliable, and maintainable deployment mechanism that reduces self-deploying behavior and ensures consistent tension application, enhancing the durability and ease of use of the telescopic boom.
Implementation Method 1
the motor can apply tension to the cable
Data Source
AI summary
A cable-driven telescopic boom with several boom segments repositionable between stowed positions and deployed positions. The boom includes multiple spaced apart and separate cables that engage pulleys connected to each boom segment. A drive system can be used to apply tension to the cables to reconfigure the boom from a stowed configuration to a deployed configuration.