使用兰利的14乘22英尺亚音速风洞进行50年的研究

使用兰利的14乘22英尺亚音速风洞进行50年的研究

ByNASA中文

Dec. 11, 2020, marks the 50th anniversary of NASA’s Langley Research Center’s 14×22 Subsonic Wind Tunnel. The facility is used to assess aerodynamic performance of aircraft over a wide range of takeoff, landing, cruise, and high angle-of-attack conditions. It can provide acoustic, tethered free-flight, and forced-oscillation testing, motorsports research, aerodynamic material design studies and more. The tunnel has been used by aircraft manufacturers, defense industry partners, the Department of Defense, and other government organizations. NASA projects have included researchers working space, science, exploration, and aeronautics programs in the continuing endeavor to achieve our NASA mission. In this photo, engineers led by researcher Greg Gatlin have sprayed fluorescent oil on a 5.8 percent scale model of a futuristic hybrid wing body during tests in the tunnel….

介绍阿尔忒弥斯宇航员

介绍阿尔忒弥斯宇航员

ByNASA中文

Vice President Mike Pence introduces NASA astronauts, from left, Jessica Meir, Joseph Acaba, Anne McClain, Matthew Dominick, and Jessica Watkins during a meeting of the National Space Council inside the Apollo/Saturn V Center at the Kennedy Space Center Visitor Complex in Florida on Dec. 9, 2020. Meir, Acaba, McClain, Dominick, and Watkins are among the initial team of 18 astronauts eligible for early Artemis missions on and around the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024. Image Credit: NASA/Kim Shiflett 2020年12月9日，在佛罗里达州肯尼迪航天中心的阿波罗/土星5号中心举行的国家航天委员会会议上，副总统迈克·彭斯(左起)介绍NASA宇航员杰西卡·梅尔、约瑟夫·阿卡巴、安妮·麦克莱恩、马修·多米尼克和杰西卡·沃特金斯。梅尔、阿卡巴、麦克莱恩、多米尼克和沃特金斯是首批18名宇航员中的一员，他们有资格在月球上和周围执行早期的阿尔忒弥斯飞行任务。根据阿尔忒弥斯计划，美国宇航局将在2024年将首位女性和下一位男性送上月球。 影像来源：NASA/Kim Shiflett

3D打印火箭部件和宇宙飞船的未来

3D打印火箭部件和宇宙飞船的未来

ByNASA中文

Future lunar landers might come equipped with 3D printed rocket engine parts that help bring down overall manufacturing costs and reduce production time. NASA is investing in advanced manufacturing – one of five industries of the future – to make it possible. Through a series of hot-fire tests in November, NASA demonstrated that two additively manufactured engine components – a copper alloy combustion chamber and nozzle made of a high-strength hydrogen resistant alloy – could withstand the same extreme combustion environments that traditionally manufactured metal structures experience in flight. This image shows the hot-fire testing of an additively manufactured copper alloy combustion chamber and a nozzle made of a high-strength hydrogen resistant alloy. Learn more about the 3D printing process. Image Credit: NASA 未来的月球着陆器可能会配备3D打印的火箭发动机零件，以帮助降低总体制造成本并减少生产时间。 NASA正在投资于先进制造业（未来的五个行业之一）以使其成为可能。…

NASA和波音公司完成了一系列星际客机的降落伞测试

NASA和波音公司完成了一系列星际客机的降落伞测试

ByNASA中文

NASA and Boeing have completed Starliner’s last parachute balloon-drop test designed to strengthen the spacecraft’s landing system ahead of crewed flights to and from the International Space Station. Read the full story. The tests, developed by Boeing and NASA, used six balloon-drop tests of a Starliner test article to gather supplemental performance data on the spacecraft’s parachutes and landing system. Each drop test focused on a different set of adverse conditions and used pre-flown parachutes to evaluate reusability margins for future missions. Starliner will be the first American-made orbital crew capsule to land on land. The spacecraft uses a series of parachutes and airbags that deploy at specific altitudes allowing Starliner to touch down gently in the desert of the western United States. NASA also…

从地球上看空间站

从地球上看空间站

ByNASA中文

The International Space Station is seen in this 13 second exposure as it flies over Arlington, Virginia, Sunday, Dec. 6, 2020. Onboard the station are: NASA astronauts Kate Rubins, Shannon Walker, Victor Glover, Mike Hopkins; Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi; and, Russian cosmonauts Sergey Ryzhikov, and Sergey Kud-Sverchkov. Image Credit: NASA/Bill Ingalls 当2020年12月6日星期日国际空间站飞越弗吉尼亚州阿灵顿时，在这13秒钟的曝光中拍摄到了国际空间站。空间站上有：NASA宇航员凯特·鲁宾斯(Kate Rubins)、香农·沃克(Shannon Walker)、维克多·格洛弗(Victor Glover)、迈克·霍普金斯(Mike Hopkins)；日本宇宙航空研究开发机构(JAXA)宇航员野口宗一(Soichi Noguchi)还有俄罗斯宇航员谢尔盖·雷吉科夫（Sergey Ryzhikov）和谢尔盖·库德·斯维奇科夫（Sergey Kud-Sverchkov）。 影像来源：NASA/Bill Ingalls

哈勃望远镜凝视着宇宙仙境

哈勃望远镜凝视着宇宙仙境

ByNASA中文

This large expanse of space captured with the Hubble Space Telescope features the galaxy SDSS J225506.80+005839.9. Unlike many other extravagant galaxies and stunning nebulae imaged by Hubble, this galaxy does not have a short, popular name, and is only known by its long name given in the Sloan Digital Sky Survey, which refers to its coordinates in the sky. This galaxy – visible in the center right portion of the image – and its many wondrous neighboring galaxies lie in the constellation of Pisces (the Fish). This is a post-starburst galaxy, which is a product of galaxies that have merged within the past billion years. This merger event drove gas to the galaxy’s center and created an abundance of new stars, of which the brightest…

在国际空间站的世界之窗内放松

在国际空间站的世界之窗内放松

ByNASA中文

JAXA (Japan Aerospace Exploration Agency) and Expedition 64 astronaut Soichi Noguchi relaxes at the end of the work day inside the seven-windowed cupola, the International Space Station’s “window to the world.” The orbiting lab was flying above the South Pacific at the time this photograph was taken on Nov. 27, 2020. December will be a busy month as the Expedition 64 gears up for space freighter traffic. On Wednesday, Dec. 2, the entire crew trained for the unlikely event of an emergency on the station. They coordinated with mission controllers around the world practicing their communication, locating safety gear and maneuvering through escape routes. The crew also is preparing for the arrival of a new SpaceX Dragon cargo craft on Sunday, Dec. 6. Image Credit:…

觉醒的新生恒星

觉醒的新生恒星

ByNASA中文

Lying inside our home galaxy, the Milky Way, this Herbig–Haro object is a turbulent birthing ground for new stars in a region known as the Orion B molecular cloud complex, located 1,350 light-years away. Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars that form when narrow jets of partially ionized gas ejected by stars collide with nearby clouds of gas and dust. This image of Herbig-Haro Jet HH 24 was taken by the Hubble Space Telescope in 2015. When stars form within giant clouds of cool molecular hydrogen, some of the surrounding material collapses under gravity to form a rotating, flattened disk encircling the newborn star. Although planets will later congeal in the disk, at this early stage the protostar is…

地球可能被毛状暗物质包围着

地球可能被毛状暗物质包围着

ByNASA中文

The solar system might be a lot hairier than we thought. This illustration shows Earth surrounded by theoretical filaments of dark matter called “hairs.” Dark matter is an invisible, mysterious substance that makes up about 27 percent of all matter and energy in the universe. The regular matter, which makes up everything we can see around us, is only 5 percent of the universe. The rest is dark energy, a strange phenomenon associated with the acceleration of our expanding universe. The data on hairy dark matter is based on a study by NASA’s Jet Propulsion Laboratory Gary Prézeau that appeared in a 2015 article in the Astrophysical Journal. Learn more about hairy dark matter. Image Credit: NASA/JPL-Caltech 太阳系可能比我们想象的要毛茸茸的多。 这幅插图显示，地球被理论上称为“毛发”的暗物质细丝所包围。 暗物质是一种不可见的神秘物质，约占宇宙所有物质和能量的27%。构成我们周围所能看到的一切的常规物质，只占宇宙的5%。剩下的是暗能量，这是一种与我们膨胀的宇宙加速有关的奇怪现象。 关于有毛暗物质的数据是基于NASA喷气推进实验室加里·普雷佐（GaryPrézeau）的一项研究得出的，该研究发表在2015年的《天体物理学杂志》上。 了解有关毛状暗物质的更多信息。 图片来源：NASA/JPL-Caltech

卡罗尔·哈里森 (Carol Harrison)：看到所有事物的美

卡罗尔·哈里森 (Carol Harrison)：看到所有事物的美

ByNASA中文

Carol “Bird Song” Harrison is a a quality assurance specialist (QAS) working in the Mission Assurance Branch at NASA’s Langley Research Center. She has degrees in mechanical technology and mechanical engineering. After graduating from the NASA Apprentice Program in 1992, she worked as a wind tunnel technician for 29 years. She now is enjoying a career change as a QAS. She is a member of the Cheroenhaka Nottoway Indian Tribe of Southampton, Virginia. In this photo, she is standing next to the Coordinate Measurement Machine) she was using to measure “the table for fixturing the backplate for the new Exploration Extravehicular Mobility Unit spacesuit that is being designed and tested by NASA to support the 2024 mission to put the first woman and the next…