How do the astronauts drink a cup of hot soy milk?

2022-08-05 0 By

Science and Technology Daily reporter Wang Yanbin calculated that there are still more than half a month, shenzhou 13 three astronauts will successfully complete the mission, return to the ground.Li, for his part, is looking forward to the return of the heroes, but also paying attention to what they eat in space.Li Gong’s identity is Joyoung Co., Ltd (hereinafter referred to as Joyang) space Kitchen project department deputy chief designer.He and his colleagues have either led or helped develop four sets of technology that will go into the Tiangong to provide life support for the astronauts.Joyang Space Kitchen project team is developing “space soy milk”.The four sets of technologies are hot air heating device, drinking water distributor, “space soya milk” and intelligent iot control App.Inside tiangong, a hot air heater is used to heat food and make yogurt, a drinking water dispenser is used to filter raw water containing silver and ration drinking water to astronauts, a smart App is used to control all kitchen products on the space station, and “space soybean milk” can be brewed in a space environment.Astronaut Wang Yaping introduces the space kitchen.Astronauts work very hard in space, and what they eat directly affects their mental and physical state.But it’s not easy for them to eat and drink well in space.Eat good drink good in space is not easy to see from the outside, science and technology journal reporter got the “space soya-bean milk” is more like a bag of mud seal of fruits and vegetables, but with “water directly with soybean after grinding” form directly ordinary soya-bean milk, soya-bean milk “space” without crushing, is produced on the ground of soybean milk powder, drink directly in space, and this kind of soybean milk powder was deslagging;At the same time, this kind of soybean milk powder directly with the water flowing out of the drinking machine is warm water directly, there is no heating problem.Joyang Space Kitchen project team is developing “space soy milk”.Behind the launch of “space soymilk”, researchers will “wall breaking grade 2, space food chemical pollution requirements and sensory evaluation grade A” to achieve three in one, to ensure its safety, nutrition, taste of space quality, and thus obtained the national invention patent.Drinking soya-bean milk in space environment, the control of water temperature should be accurate, the control of water speed should be more stable.It is understood that foaming is easy to occur in water flow under weightless environment, so it is necessary to accurately control the velocity of water outlet to ensure the uniformity of water outlet and avoid bubbles.Joyang engineers told reporters that in the space station, astronauts drink, eat, not only affected by the space environment, but also to avoid microbial pollution.According to the study, 84 species of microbes have been found on the Iss, and they come from a variety of sources, including crew members, materials and equipment on board the station, introduced during final assembly tests and launch preparations on the ground, and from visiting spacecraft and their cargoes.That means almost all space kitchens will use antibacterial materials.”Four-needle zinc oxide whisker” aerospace antibacterial material has a unique three-dimensional four-needle three-dimensional structure, evenly distributed in plastic, rubber, coating, activated carbon and other substrate materials, endowing the material with unique antibacterial function characteristics.The project “Development and Application of Antibacterial Materials in Manned Spacecraft cabin” led by functional Polymer materials team of Southwest Jiaotong University won the first prize of Science and Technology Progress Award of Sichuan Province in 2020.To land the project, it is led by Southwest Jiaotong University, Jiuyang participated in manned spaceflight antibacterial materials were applied to the space kitchen.Li gong for example: “in the space station, the total number of bacteria after daily drinking water purification index is very strict, almost 0, stricter than the standard of drinking water requirements of 100cfu/ml.”The space Kitchen is an original Chinese dish. It is a unique dish of shredded pork with fish flavor, kung pao chicken, mixed fried rice, curry fried rice, mushroom chicken, shredded pork with snow vegetables, beef fillet with black pepper, braised pork in brown sauce, fried rice with winter bamboo shoot and ham…These delicacies, in the “Heavenly Palace” have appeared.The key question is how do you heat it?Why is it harder to heat evenly in space than on the ground?According to the report, compared to the ground, weightless floating food affects the uniform heating of food;At the same time, space heating requires packaging, which challenges the thermal insulation of packaged food packaging materials and the heat uniformity of food.Astronaut Wang Yaping introduces the space kitchen.”The fact that the food is floating in weightlessness affects how evenly the food is heated compared to the ground.”Li Gong introduced that, centering on the characteristics of space food and weightlessness environment in space, they put forward a new hot air heating device design concept, and use mathematical modeling, mechanics and fluid simulation methods and tools, constantly optimize the design, and finally complete the design of hot air heating device.The hot air heating device used to heat the space food and make yogurt, make the food can be fixed on the heating plate instead of “gone with the wind” in mid-air, the types of heating food more and heated evenly, can satisfy the aluminum foil packing, metal cans, plastic packaging and other ways of heating, the perfect solved the food packaging compatibility and heating uniformity,Let more Chinese food go into space.”Recently, the Astronaut Research and Training Center of China sent a ‘thank you letter’ to Joyang, astronauts feedback that the relevant equipment developed by Joyang has a good in-orbit application experience, so we are encouraged and proud.””We have successfully solved problems such as food processing and drinking water purification in the extremely harsh outer space environment of ‘vacuum, weightlessness and no convection’ through independent innovation technology,” Joyang Vice chairman Han Run told reporters. “We have achieved high-level technological self-reliance.”The reporter learned that as one of the earliest enterprises to participate in the development of China’s manned space engineering project, Joyang undertook the development of the space kitchen project as early as 2014.”The smart space kitchen is China’s original creation and has reached the international advanced level,” Han said.It is reported that the above products have been transformed into civilian, and entered the market.Source: Science and Technology Daily editor: Wang Yu Review: Yue Liang final review: Wang Yu