Method for simulating external heat flow of light inlet of high-altitude large-aperture optical remote sensor

Abstract

The invention provides a method for simulating an external heat flow of a light inlet of a high-altitude large-aperture optical remote sensor. An absorption heat flow method based on an electric heater instead of an incident heat flow method based on a solar simulator is adopted. An economic, economic, high-realizable simulation method is provided for space heat flow simulation of a large-aperture optical remote sensor. An electric heater can be directly attached to a component provided with a radiant heat flow. Requirements of optical remote sensors with different apertures can be met and are not limited by the spot size of the solar simulator and the size of a vacuum environment simulation chamber. The problem of space heat flow simulation of a shade of a high-altitude large-aperture optical remote sensor is solved. The method is simple and effective, and is high in engineering realizability.

Description

technical field [0001] The invention belongs to the field of thermal control and relates to a method for simulating heat flow outside a light entrance of an optical remote sensor. Background technique [0002] Optical remote sensors in space are subject to the influence of solar and planetary radiation and deep and low temperature in space when they are in orbit. The thermal environment is extremely complex. very long. In order to ensure that the camera on-orbit meets the temperature requirements in the complex space environment, it is necessary to conduct sufficient and effective ground vacuum thermal environment tests on the thermal control design, and the effectiveness of the external heat flow simulation is the key factor for the effectiveness of the ground environment tests. [0003] Different from low-orbit remote sensors, high-orbit remote sensors such as geostationary orbits have a small angle between the optical axis and sunlight around midnight, and the inner and ...

AI Technical Summary

Problems solved by technology

However, with the improvement of the resolution of the optical remote sensor, the aperture of the optical remote sensor continues to increase. Due to the change in the relative positional relationship between the solar simulator and the remote sensor in orbit, the aperture required by the solar simulator is much larger than that of the optical remote sensor. Therefore, It is uneconomical and unrealistic to increase the aperture of the solar simulator to meet the demand for increasing the aperture of the camera

Images