Multilayer thermal control for high-altitude vertical imaging aerial cameras

Area of Science:

• Aerospace Engineering
• Thermal Management Systems
• Optical Instrumentation

Background:

• Aerial cameras require robust thermal control for optimal performance in dynamic aviation environments.
• Conventional single-layer thermal control of aerial cameras is insufficient, leading to high power consumption and temperature gradients.
• Effective thermal management is crucial for maintaining image quality and operational reliability.

Purpose of the Study:

• To develop and validate a novel multilayer system-level thermal control approach for aerial cameras.
• To enhance the environmental adaptability and imaging performance of aerial cameras in complex high-altitude conditions.
• To reduce the power consumption and thermal control complexity compared to traditional methods.

Main Methods:

• Partitioning the aerial camera into an imaging system and an outline cabin, separated by a low thermal conductivity material and an air insulation interlayer.
• Implementing both passive thermal control (insulation layers, phase change materials) and active thermal control (convection, heating film).
• Conducting theoretical analysis, numerical modeling, thermal equilibrium tests, and field flight tests for validation.

Main Results:

• The multilayer system achieved high-quality aerial images with an optical lens temperature gradient below 5°C and CCD temperature below 30°C.
• The total power consumption of the thermal control system was measured at 270 W.
• The proposed method demonstrated significant reductions in power consumption and thermal control difficulty.

Conclusions:

• The multilayer system-level thermal control approach effectively addresses the limitations of conventional methods for aerial cameras.
• This technology offers a simple, accurate, low-cost, and easily implementable solution for improving aerial camera performance.
• The developed thermal control strategy enhances the reliability and applicability of aerial cameras in challenging aviation environments.