The two earphone cords are often entangled together. How do the 96 umbrella cords not wrap around each other?
On the afternoon of November 18th, the Shenzhou 11 spacecraft returning cabin was carried by two astronauts, and a red and white giant parachute towed it, which was particularly eye-catching. The reporter learned from the 508 Institute of China Aerospace Science and Technology Group that the main umbrella area of ​​the Shenzhou spacecraft parachute is about 1,200 square meters, and all of them can cover three basketball courts. And such a giant, the body is very light, weighing less than one hundred kilograms, the volume is less than 200 liters after closing, can be stuffed into ordinary household refrigerators. This involves a simple, yet highly technical job – an umbrella.
There are dozens of procedures in the umbrella process. The main operations are: drying the umbrella, releasing the internal stress of the material and cleaning up the excess; stacking the umbrella clothes, sorting the umbrella clothes in order; combing the umbrella rope to ensure that any two umbrella ropes do not appear Cross or entangle; organize the umbrella bag; fill the parachute; pack; weigh. Each step affects how the three giant basketball courts fit into the "refrigerator".
96 umbrella ropes are not wrapped around each otherAnyone who has had such an experience: When you want to use headphones, the headphone cable that comes out of the bag will always be a mess, and it takes a long time to unravel. The two headphone cables are so difficult to solve. How to straighten out the spacecraft parachute umbrella rope with up to 96 pieces and a single length of about 50 meters? 508 staff introduced the 诀çª.
First of all, the umbrella rope is made of special materials, the surface is smooth, and it is not easy to knot itself. Secondly, the staff will use a tool called a comb clamp to arrange the umbrella ropes in order of numbering, from 12 to 12, from the beginning to the end. The combed umbrella ropes can be arranged neatly and orderly in the umbrella bag to ensure that they are not knotted and not entangled when pulled out.
Steel "elephant" booster umbrellaFilling the umbrella suit into the umbrella bag requires both strength and skill. When operating, one person is the main one, responsible for stacking the umbrellas and flattening them; the two are supplemented, responsible for finishing the umbrella clothes and feeding them into the umbrella bag. After the umbrella is folded, it is as thick as the quilt that is rolled up. The umbrella bag should be even and orderly, and it must be full and full without leaving a gap. The strength is controlled by the umbrella personnel. When compacting the umbrella, use the fist, use the palm or the finger, and use it according to the position of the umbrella in the umbrella bag. If it is quite dry, it may damage the umbrella.
It is necessary to fill the umbrella bag, the umbrella rope and the connecting sling into the umbrella bag, which cannot be completed by manpower. It requires a pressure of 15 tons, which is about the weight of the two elephants. The staff also has a "steel elephant" - a pressure umbrella. In the process of umbrella, it is necessary to cooperate with the pressure bale machine manually, compact it with an umbrella machine, and then manually fill it. Repeated several times to put the parachute into the umbrella bag.
The package instantly determines success or failure.After the umbrella rope is fully loaded into the umbrella bag, the mouth of the umbrella bag needs to be sealed. This is called "package".
Since the umbrella rope is inserted into the inside of the umbrella under the great pressure of the pressure umbrella machine, when the pressure of the umbrella is removed, the compact umbrella rope in the umbrella will expand. The package needs to be carried out at a moment when the pressure is relieved and the umbrella has not yet expanded. At this time, the two operators used the same force to simultaneously tighten the rope, and after the rope loop reached the specified size, the third operator tightened it. The process is short but laborious. “It’s no less than two hours in the gym,†the operator said.
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