Shenzhou XVIIAstronauticsOn December 21, the crew successfully completed the mission of walking out of the cabin. Wear red and blueSpacesuitsTang Hongbo and Tang Shengjie went out of the cabin separately and showed them outsideSpaceThe tacit understanding of cooperation. Extravehicular spacesuitsNot only thatAstronauticsprotective equipment also contains an independent life support system to ensureAstronauticssafety.
To ensure safety,AstronauticsBefore leaving the cabin and walking, the safety rope should be buckled first to avoid accidental drifting. In addition, they use tools with safety ropes to prevent the tool from losing control during operation. This is also related to the United StatesAstronauticsThe staff is inInternational Space StationThe loss of the kit when exiting the cabin is a stark contrast that highlights our countryAstronauticsA high level of responsibility for mission safety.
Tang Hongbo came to the Tianhe core module through the robotic armThe sunwing operation point, ready for damage by micrometeoritesThe sunwing for repairs. For this, he usedThe sunwing repair tools, which was unveiled for the first time. This tool has "space."Power supplyand the function of "Flat Cable Punching Tool", which played a role in the repair processCriticalFunction.
The sunWing repair is a complex task because:The sunThe wings are very thin and soft, less than 1 mm thick, so special care is required when handling. However,The sunThe thin and light nature of the wing also brings advantages, making maintenance easier and not affecting overall performance due to a small piece of damage.
In addition, repairsThe sunAnother challenge for the wing is that it can only be operated at night. InSpace, the Earth goes around once every half hour, which means that every 45 minutes it experiences sunrise and sunset. In order to save weight, each pieceThe sunThe wings may not have a separate switch, and repairs can only be carried out at night when there is no sunlight. So,AstronauticsPersonnel must accurately arrange the maintenance rhythm and use the evening time to disassemble and install.
ExceptThe sunWing repair tools,AstronauticsThe crew also used the extravehicular cabinCamerasRightThe sunThe surface of the wing is scanned. ExtravehicularCamerasPossess resistanceSpaceThe ability to withstand harsh environments, after special protection, can withstand almost vacuum and temperatures of more than minus 200 degrees. It'sClarityHigh enough to transmit images back to the ground in real time to help ground experts inspect themThe sunWhether there is minor damage to the wings.
In terms of operation,AstronauticsThe staff is dressed bulkylySpacesuitsWhen finger dexterity is limited, so outside the cabinCamerasof the operationbuttonIt must be designed to be large and simplified to provide convenience. Astronauticscrew through the cabinCamerasRightThe sunWings are inspected to ensure the accuracy of repairs.
This time Shenzhou 17AstronauticsThe crew walked out of the cabin for the second longest time in history. The mission was successfully completedThe sunThe repair of the wing, and the use of two new tools, is of great significance.
International Space StationofThe sunThe wings have been hit a thousand times, and the portholes have also appeared in the pits, these areSpacecaused by dust impacts. China's space station may also face similar challenges in the future, so Shenzhou-17 may carry out more out-of-cabin missions in the future to better copeSpaceEnvironmental challenges.
RepairsThe sunThe work of the wing is not only technically complex, but also time-constrainedAstronauticsPersonnel need to arrange maintenance work reasonably according to the sunshine time to ensure that disassembly and installation are carried out at night when there is no sunlight. This requires:AstronauticsThe maintenance task is completed in a very short time, and the work intensity is large.
In short, the Shenzhou-17 astronauts walked out of the capsule andThe sunThe wing maintenance mission was a complete success for the futureSpacetasks and maintenance work accumulated experience, also for our countryAstronauticsIt has made an important contribution to the development of the cause.