Thermal analysis and design of the aerial camera’s primary optical system components

Liu, Weiyi; Ding, Yalin; Wu, Qingwen; Jia, Jing; Guo, Liang; Wang, Linghua

doi:10.1016/j.applthermaleng.2012.01.015

Cited by 14 publications

(4 citation statements)

References 3 publications

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“…The satellite thermal test is an effective means to verify the correctness of thermal design [16,17]. The traditional satellite thermal test uses the high-emissivity heat sink surface of the vacuum container to simulate the "cold and dark" environment in space and uses infrared heating cages or other devices to simulate the space heating flow.…”

Section: Principle Of the Heat Sink Equivalent Thermal Test Methodsmentioning

confidence: 99%

Heat Sink Equivalent Thermal Test Method and Its Application in Low-Orbit Satellites

Bai,

Kong,

et al. 2024

Applied Sciences

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In order to shorten the length of satellite thermal testing and reduce the cost of satellite development, a new method of satellite thermal testing using a heat sink to simulate space heating flow has been proposed. First, based on the characteristics of low-orbit satellites and the current research of thermal tests, the necessity of studying high-efficiency thermal test methods for satellites is expounded, and the advantages of the heat sink equivalent thermal tests compared to conventional tests are explained. Then, the principle of the heat sink equivalent thermal tests is described, the formula to calculate the heat sink temperature is given, and an error analysis of the formula is conducted. It is found that when the emissivity of the heat sink surface is greater than 0.9 and the ratio of the heat sink’s surface area to the satellite’s is greater than 10, the error of the heat sink equivalent tests should be within 1 °C. Next, the application of the heat sink equivalent thermal test is described using the Jilin−1 GF02F satellite as an example. Finally, the test results and the flight temperature of the GF02F satellite are acquired and analyzed. The results show that the error of the heat sink equivalent thermal test is 0.9 °C, the test time is shortened by one-third compared to traditional thermal tests, and the cost of the thermal test is reduced by more than 70%.

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Section: Principle Of the Heat Sink Equivalent Thermal Test Methodsmentioning

confidence: 99%

Heat Sink Equivalent Thermal Test Method and Its Application in Low-Orbit Satellites

Bai,

Kong,

et al. 2024

Applied Sciences

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“…There are several factors influencing the thermal stability, including instrument heat, orbital thermal environment and satellite attitudes 1,2 . In order to keep the temperature steady, thermal control methods including passive and active control measures are used in the cameras 3 . Traditional passive thermal control measures include coating MLI in the structure 4 .…”

Section: Introductionmentioning

confidence: 99%

Thermal control method of high temperature stability for high resolution space camera

Xia,

Zhang,

Song

et al. 2024

International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2024)

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“…Ravinder et al [ 14 ] used the finite element structural model to predict the temperature-induced mechanical deformations of a mirror blank for a solar telescope. Liu et al [ 15 ] established an FE thermal model for an aerial camera to calculate the model’s temperature distribution according to the boundary conditions. Gao et al [ 16 ] verified the rationality of a thermal control scheme for an infrared aerial camera by a finite element thermal analysis.…”

Section: Introductionmentioning

confidence: 99%

Lumped Parameter Thermal Network Modeling and Thermal Optimization Design of an Aerial Camera

Fan,

Feng,

Ren

et al. 2024

Sensors

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The quality of aerial remote sensing imaging is heavily impacted by the thermal distortions in optical cameras caused by temperature fluctuations. This paper introduces a lumped parameter thermal network (LPTN) model for the optical system of aerial cameras, aiming to serve as a guideline for their thermal design. By optimizing the thermal resistances associated with convection and radiation while considering the camera’s unique internal architecture, this model endeavors to improve the accuracy of temperature predictions. Additionally, the proposed LPTN framework enables the establishment of a heat leakage network, which offers a detailed examination of heat leakage paths and rates. This analysis offers valuable insights into the thermal performance of the camera, thereby guiding the refinement of heating zones and the development of effective active control strategies. Operating at a total power consumption of 26 W, the thermal system adheres to the low-power limit. Experimental data from thermal tests indicate that the temperatures within the optical system are maintained consistently between 19 °C and 22 °C throughout the flight, with temperature gradients remaining below 3 °C, satisfying the temperature requirements. The proposed LPTN model exhibits swiftness and efficacy in determining thermal characteristics, significantly facilitating the thermal design process and ensuring optimal power allocation for aerial cameras.

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Thermal analysis and design of the aerial camera’s primary optical system components

Cited by 14 publications

References 3 publications

Heat Sink Equivalent Thermal Test Method and Its Application in Low-Orbit Satellites

Heat Sink Equivalent Thermal Test Method and Its Application in Low-Orbit Satellites

Thermal control method of high temperature stability for high resolution space camera

Lumped Parameter Thermal Network Modeling and Thermal Optimization Design of an Aerial Camera

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