Telescoping Mast Ribs and Coupling for Debris Resistance

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Solution Overview

Problem

Existing telescoping antenna systems face performance degradation in harsh environments due to debris accumulation, requiring frequent maintenance and complex mechanisms for deployment and stabilization.

Innovation Solution

The implementation of a telescoping mast system with structural ribs on mast sections and a coupling mechanism that includes channels and bushings for axial movement, along with a guy wire stabilization structure to facilitate deployment and maintain alignment, while allowing debris to pass through gaps between sections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If telescoping mast sections are tightly fitted to provide structural integrity, then load-bearing capacity is improved, but debris accumulation between sections increases requiring frequent maintenance

Engineering Contradiction:
Improveload-bearing capacityVSAvoidperformance in harsh environments
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The mast system is divided into multiple telescoping sections with gaps between them, allowing debris to pass through while maintaining structural integrity. The ribs on each section provide load-bearing capacity independently, so the segmentation does not compromise overall strength.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Ribs are introduced as intermediary structural elements on the mast sections. These ribs engage with coupling mechanisms to provide load-bearing capacity while the gaps between sections allow debris to pass through without accumulating, resolving the contradiction between tight fitting and debris resistance.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If complex mechanisms such as cables, screw drives, and motor actuators are used for deployment, then deployment capability is achieved, but device complexity and maintenance requirements increase

Engineering Contradiction:
Improvedeployment capabilityVSAvoidmechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent removes complex deployment mechanisms (cables, screw drives, motor actuators) from the system entirely. Instead, the mast sections are designed to deploy and stabilize through their structural geometry and coupling mechanisms, eliminating the need for complex actuation systems while maintaining deployment capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The mast system is designed to self-deploy and self-stabilize through its structural configuration. The coupling mechanisms and rib structures automatically engage and stabilize the mast in deployed configurations without requiring external motors or complex actuation systems.

Inventive Principle:
Principle #25Self-service

3Object-affected harmful factors

If wipers and sleeves are added to combat sand and debris, then protection against debris is improved, but device complexity and maintenance requirements increase

Engineering Contradiction:
Improvedebris damage protectionVSAvoidmaintenance mechanisms
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

Instead of trying to prevent debris from entering the mast sections with wipers and sleeves, the patent inverts the approach by designing gaps that allow debris to pass through freely. The structural integrity is maintained through ribs and coupling mechanisms rather than tight sealing, eliminating the need for protective wipers and sleeves.

Inventive Principle:
Principle #13The other way round (Inversion)

4Reliability

If gaps are created between mast sections to allow debris passage, then resistance to debris accumulation is improved, but load-bearing capacity may be reduced

Engineering Contradiction:
Improvedebris resistanceVSAvoidload-bearing capacity
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The mast sections have different local qualities: the gaps between sections allow debris passage, while the ribs on each section provide localized load-bearing capacity. The coupling mechanisms engage the ribs to transfer loads between sections, so the overall load-bearing capacity is maintained despite the gaps.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS8522511B2Methods and apparatus for mast system with enhanced load bearing
Publication Date: 2013.09.03 RAYTHEON CO
  • US8522511B2 patent drawing
  • US8522511B2 patent drawing
  • US8522511B2 patent drawing

AI summary

Methods and apparatus for providing a mast system including a telescoping mast having first and second mast sections, the mast having a stowed configuration and a deployed configuration, the first mast section including an inner surface having ribs disposed thereon, and, the second mast section including a coupling mechanism to engage the ribs on the first mast section for enabling axial movement of the second mast section with respect to the first mast section.