of most satellite bodies and bodies. The visor is laid flat

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According to the low orbit altitude and the geometric model of the satellite, we have designed a radio frequency permeable sunshade for the satellite, which can prevent light from reaching all the diffuse parts of most satellite bodies and bodies. The visor is laid flat on the chassis during launch and unfolded during satellite separation from Falcon 9. The sunscreen completely blocks the light from reaching the antenna, thus preventing the light from being reflected from the diffuse antenna. This method not only avoids the thermal effect of the darkening of the antenna surface, but also has a greater impact on the brightness reduction. As mentioned earlier, the first VisorSat prototype was launched with the eighth batch of star chains, and we will install these black mirror sunshades on all satellites after June.

Honghu polyurethane thermal insulation steel pipe specification model 4, insulation layer and anti-corrosion layer should avoid direct contact with flame. For on-site installation, please follow the following procedures: pipe trench excavation-base treatment (drainage, sand cushion)-lower pipe-steel pipe welding-inspection (water pressure)-installation (pressure test)-foaming-sealing foam cell. Joint installation? The company can send personnel to the project site to carry out the heat preservation work of the joint, including the installation of the outer casing of the joint, the connection and sealing of the outer casing of the joint with the supervisor, and the foaming of the on-site joint, but it does not include the welding of the steel pipe of the joint. ? (1) way? Sleeve joint, in this way, the joint casing adopts polyethylene casing with the same material and density as the prefabricated thermal insulation pipe casing, and the heat shrinkage belt is used to connect and seal between the polyethylene joint casing and the main pipe to ensure the watertightness of the joint.

Hebei Hengcheng Polyurethane Co., Ltd. can send personnel to the project site to carry out the heat preservation work of the joint, including the installation of the outer casing of the joint, the connection and sealing of the outer casing of the joint with the supervisor, and the foaming of the on-site joint, but it does not include the welding of the steel pipe of the joint.

In general, it can withstand temperature 120 ℃ through modification or combination with other thermal insulation materials. It can withstand 180 ℃. The structural design of the new polyurethane foamed thermal insulation steel pipe is novel, and the insulation work of the joint is carried out on the site of the polyurethane foamed thermal insulation steel pipe project, including the installation of the outer casing of the joint, the connection and sealing of the outer casing of the joint with the supervisor and the foaming work of the joint on the spot, but the welding of the joint part of the steel pipe is not included. The rigid foam insulation layer of prefabricated directly buried thermal insulation steel pipe should meet the requirements of “high density polyethylene outer protection pipe polyurethane foam prefabricated directly buried thermal insulation pipe and pipe fittings”. The monthly trend judgment index fell to the ratio and rebounded slightly. Polyurethane directly buried insulation pipe foam has good mechanical properties and 0 thermal properties.

In addition to the task dashboard can query the status of all tasks, customers with equipment management functions, supervisors can query and analyze “equipment tasks”, query the devices below the task query conditions, and customize the displayed query conditions. to help you quickly find all equipment data, for example, select time conditions + device name, you can query every task of the device at a specific time Easy to track and analyze. We also provide a variety of analysis methods, so set up “equipment Map View” to facilitate you to use the geographical location to view the details of each device.

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