Light-weight robust thermal control apparatus used for carbon fiber main supporting structure camera

Abstract

The invention relates to a light-weight robust thermal control apparatus used for a carbon fiber main supporting structure camera. The light-weight robust thermal control apparatus comprises a camera supporting truss, a thin-film type electric heater, multiple (pyrolytic highly oriented graphite sheet) PGS thin films, and a two-sided pressure sensitive adhesive tape, wherein the thin-film type electric heater is arranged on the outermost layer of the camera supporting truss; and the multiple high-thermal-conductivity flexible thin films are adhered to the camera supporting truss through the two-sided pressure sensitive adhesive tape in a splicing manner. According to the light-weight robust thermal control apparatus used for the carbon fiber main supporting structure camera, an existing mature thermal control technology and the PGS thin films having the characteristic of extremely high thermal conductivity are fully utilized; a space camera main supporting structure is adhered to the PGS thin films, so that the equivalent thermal conductivity of the carbon fiber structure is effectively improved; and the technical problem of relatively high temperature gradient of the main supporting structure under influences of outside-track thermal flow and the heater caused by relatively low thermal conductivity of an all-carbon structure camera is solved.

Description

Technical field: [0001] The invention belongs to the technical field of space optical remote sensing, and in particular relates to a light-duty robust thermal control device for a carbon fiber main support structure camera. Background technique: [0002] In space optical remote sensors, the main support structure is the key component of space camera imaging, which has a direct impact on the imaging quality of the camera. With the increasing application of carbon fiber materials in space cameras, the full carbonization of the camera support structure (full carbon structure camera for short), due to the low thermal conductivity of carbon fiber materials currently used in China, and the thermal environment of space cameras in orbit The complexity brings about a large temperature gradient in the support structure during orbital operation. Under the condition of non-uniform temperature field, the main support structure forms uncontrollable temperature deformation, which affects ...

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