Reflective Panel Assembly With Hinged Heat Pipes for Space Power Cooling

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Solution Overview

Problem

Space-based power generation systems face challenges in managing thermal energy, especially with high concentration ratios, leading to increased mass and complexity, particularly when powering devices requiring high power levels like radar and lidar systems.

Innovation Solution

The use of heat pipes to communicate thermal energy between reflective panels and a cold plate, while hinging the panels to allow for movement and efficient thermal energy rejection, reduces system mass and complexity by integrating thermal management with the structural support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If concentrated photovoltaic cells are used to produce high power levels, then power generation efficiency is improved, but thermal energy management difficulty increases

Engineering Contradiction:
Improvepower generation efficiencyVSAvoidthermal energy management complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The patent combines thermal energy management functions with the structural support system by integrating heat pipes into the panel assembly structure. The heat pipes are embedded within the panel support framework, allowing thermal conduction through existing structural components rather than adding separate thermal management systems. This merging approach manages thermal energy from concentrated photovoltaic cells while maintaining structural integrity and reducing overall system complexity.

Inventive Principle:
Principle #5Merging (Combining)

2Temperature

If structures for thermal energy management are incorporated, then thermal energy management capability is improved, but system mass increases

Engineering Contradiction:
Improvethermal energy management capabilityVSAvoidsystem mass
Core Design Contradiction:
TemperatureVSWeight of moving object

Solution Approach 1:

The patent implements multi-functionality by designing heat pipes that simultaneously serve thermal conduction and structural support functions. The heat pipes are integrated into the panel assembly framework, where they act as both thermal pathways for heat removal and mechanical support elements for positioning photovoltaic cells and reflective panels. This universal design eliminates the need for separate structural components, thereby managing thermal energy without increasing system mass.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Temperature

If heat pipes are used to communicate thermal energy and hinge panels, then thermal energy management is improved, but device complexity increases

Engineering Contradiction:
Improvethermal energy managementVSAvoiddevice complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent merges thermal conduction and mechanical hinging functions into a single integrated component. The heat pipes are configured to physically connect and hinge reflective panels to the panel assembly structure, while simultaneously conducting thermal energy away from concentrated photovoltaic cells. This dual-function design eliminates the need for separate hinging mechanisms and thermal management components, thereby improving thermal energy management without proportionally increasing device complexity.

Inventive Principle:
Principle #5Merging (Combining)

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

This solution enables effective thermal energy management, reducing system mass and complexity while maintaining high power generation efficiency, achieving 130 W/kg of power and increased tolerance for pointing and tracking errors.

Implementation Method 1

at least one heat pipe configured to communicate thermal energy to the first reflective panel and the second reflective panel

Methodology Applied
Scientific EffectHeat pipe: Heat Pipe

Data Source

PatentUS8308111B2Panel assembly for a space-based power generation system
Publication Date: 2012.11.13 AEROJET ROCKETDYNE OF DE INC
  • US8308111B2 patent drawing
  • US8308111B2 patent drawing
  • US8308111B2 patent drawing

AI summary

An example space-based power generation panel arrangement includes a first reflective panel and at least one heat pipe configured to communicate thermal energy to the first reflective panel and a second reflective panel. The heat pipe is configured to hinge the first reflective panel to the second reflective panel.