超级军网nasa的猎户座飞船在耐压试验后出现三条裂纹
来源：百度文库 编辑：超级军网 时间：2024/04/30 01:16:16
宇宙飞船的耐压试验是在地面往飞船施加最大工作压力的1.1~1.7倍压力来检验飞船安全性的一种必需试验。
http://spaceflightnow.com/news/n1211/23eft1cracks/
Cracks discovered in Orion capsule's pressure shell
BY STEPHEN CLARK
SPACEFLIGHT NOW
Posted: November 23, 2012
8Three cracks appeared in NASA's first space-bound Orion crew exploration vehicle during a proof pressure test this month, according to agency officials, but the anomaly and anticipated repairs are not expected to impact the schedule for the capsule's first orbital test flight in late 2014.
Photo of one of three cracks on radial ribs on Orion's aft bulkhead. Credit: NASA
The cracks materialized in the aft bulkhead on the lower half of the Orion multipurpose crew vehicle during a proof pressure test at NASA's Kennedy Space Center in mid-November, according to Joshua Buck, a NASA spokesperson.
"The cracks are in three adjacent, radial ribs of this integrally machined, aluminum bulkhead," Buck said. "The cracks did not penetrate the pressure vessel skin, and the structure was holding pressure after the anomaly occurred."
Engineers will scan the cracks with an electron microscope to investigate the cause, said Bill Gerstenmaier, associate administrator of NASA's human exploration and operations mission directorate, in a presentation to a NASA Advisory Council subcommittee.
According to Buck, "the intent is diagnose root cause and repair the cracks in time to support a second scheduled window for loads testing early next year."
Since the Orion spacecraft's pressure vessel arrived at Kennedy Space Center in late June, technicians have continued assembly of the crew module and finished the first proof pressure test, which was designed to validate engineering models and verify the Orion pressure shell's structural integrity.
The Orion pressure shell enters a chamber for pressure testing at NASA's Kennedy Space Center in Florida. Credit: NASA/Ben Smegelsky
During the proof pressure test, engineers pumped air into the crew module to check the structure's ability to hold pressure against the ambient atmosphere at sea level. The test simulates what the spacecraft will see in space, when it must hold pressure against a vacuum.
Cracks have occurred during pressure tests of other spacecraft, including a Russian Soyuz capsule's descent module, which was damaged in a prelaunch test in January. Russia scrapped the module and delayed the launch of three space station astronauts until a replacement was ready.
The schedule calls for installation of Orion's attitude control thrusters, parachutes, avionics and heat shield in the first half of 2013 before the crew capsule is attached to a mock-up service module.
Lockheed Martin Corp., the Orion capsule's prime contractor, is in charge of the 2014 mission, known as Exploration Flight Test-1. The company will oversee the flight in partnership with NASA, which will receive post-flight data.
A United Launch Alliance Delta 4-Heavy rocket will launch the capsule from Cape Canaveral Air Force Station, Fla., into an elliptical orbit reaching 3,600 miles above Earth. From there, the the Orion will dive back into Earth's atmosphere at more than 20,000 mph, giving engineers key data on how the spacecraft responds to a re-entry at speeds nearly replicating what the capsule will see when returning from deep space missions to the moon, asteroids and other destinations.
Artist's concept of the Orion spacecraft and the Delta 4 rocket's upper stage on the EFT-1 flight test. Credit: NASA
The uncrewed multi-hour flight is scheduled to launch in September 2014, and Buck said NASA does not expect the crack issue to affect the launch date, which is driven by the availability of Orion's Delta 4 launcher in ULA's manifest, according to NASA officials. NASA and Lockheed Martin aim to have the Orion crew vehicle and a structural mock-up of its service module ready for launch operations by December 2013.
After splashdown in the Pacific Ocean, crews will recover the Orion crew vehicle and outfit the capsule for an ascent abort test.
NASA's Space Launch System, a heavy-lift rocket derived from the space shuttle, will launch the second Orion space mission in late 2017 on a flyby around the moon.
The first Orion mission with astronauts is set to fly on the second Space Launch System flight in 2021 to a high-altitude orbit around the moon.
宇宙飞船的耐压试验是在地面往飞船施加最大工作压力的1.1~1.7倍压力来检验飞船安全性的一种必需试验。
http://spaceflightnow.com/news/n1211/23eft1cracks/
Cracks discovered in Orion capsule's pressure shell
BY STEPHEN CLARK
SPACEFLIGHT NOW
Posted: November 23, 2012
8Three cracks appeared in NASA's first space-bound Orion crew exploration vehicle during a proof pressure test this month, according to agency officials, but the anomaly and anticipated repairs are not expected to impact the schedule for the capsule's first orbital test flight in late 2014.
Photo of one of three cracks on radial ribs on Orion's aft bulkhead. Credit: NASA
The cracks materialized in the aft bulkhead on the lower half of the Orion multipurpose crew vehicle during a proof pressure test at NASA's Kennedy Space Center in mid-November, according to Joshua Buck, a NASA spokesperson.
"The cracks are in three adjacent, radial ribs of this integrally machined, aluminum bulkhead," Buck said. "The cracks did not penetrate the pressure vessel skin, and the structure was holding pressure after the anomaly occurred."
Engineers will scan the cracks with an electron microscope to investigate the cause, said Bill Gerstenmaier, associate administrator of NASA's human exploration and operations mission directorate, in a presentation to a NASA Advisory Council subcommittee.
According to Buck, "the intent is diagnose root cause and repair the cracks in time to support a second scheduled window for loads testing early next year."
Since the Orion spacecraft's pressure vessel arrived at Kennedy Space Center in late June, technicians have continued assembly of the crew module and finished the first proof pressure test, which was designed to validate engineering models and verify the Orion pressure shell's structural integrity.
The Orion pressure shell enters a chamber for pressure testing at NASA's Kennedy Space Center in Florida. Credit: NASA/Ben Smegelsky
During the proof pressure test, engineers pumped air into the crew module to check the structure's ability to hold pressure against the ambient atmosphere at sea level. The test simulates what the spacecraft will see in space, when it must hold pressure against a vacuum.
Cracks have occurred during pressure tests of other spacecraft, including a Russian Soyuz capsule's descent module, which was damaged in a prelaunch test in January. Russia scrapped the module and delayed the launch of three space station astronauts until a replacement was ready.
The schedule calls for installation of Orion's attitude control thrusters, parachutes, avionics and heat shield in the first half of 2013 before the crew capsule is attached to a mock-up service module.
Lockheed Martin Corp., the Orion capsule's prime contractor, is in charge of the 2014 mission, known as Exploration Flight Test-1. The company will oversee the flight in partnership with NASA, which will receive post-flight data.
A United Launch Alliance Delta 4-Heavy rocket will launch the capsule from Cape Canaveral Air Force Station, Fla., into an elliptical orbit reaching 3,600 miles above Earth. From there, the the Orion will dive back into Earth's atmosphere at more than 20,000 mph, giving engineers key data on how the spacecraft responds to a re-entry at speeds nearly replicating what the capsule will see when returning from deep space missions to the moon, asteroids and other destinations.
Artist's concept of the Orion spacecraft and the Delta 4 rocket's upper stage on the EFT-1 flight test. Credit: NASA
The uncrewed multi-hour flight is scheduled to launch in September 2014, and Buck said NASA does not expect the crack issue to affect the launch date, which is driven by the availability of Orion's Delta 4 launcher in ULA's manifest, according to NASA officials. NASA and Lockheed Martin aim to have the Orion crew vehicle and a structural mock-up of its service module ready for launch operations by December 2013.
After splashdown in the Pacific Ocean, crews will recover the Orion crew vehicle and outfit the capsule for an ascent abort test.
NASA's Space Launch System, a heavy-lift rocket derived from the space shuttle, will launch the second Orion space mission in late 2017 on a flyby around the moon.
The first Orion mission with astronauts is set to fly on the second Space Launch System flight in 2021 to a high-altitude orbit around the moon.
http://spaceflightnow.com/news/n1211/23eft1cracks/
Cracks discovered in Orion capsule's pressure shell
BY STEPHEN CLARK
SPACEFLIGHT NOW
Posted: November 23, 2012
8Three cracks appeared in NASA's first space-bound Orion crew exploration vehicle during a proof pressure test this month, according to agency officials, but the anomaly and anticipated repairs are not expected to impact the schedule for the capsule's first orbital test flight in late 2014.
Photo of one of three cracks on radial ribs on Orion's aft bulkhead. Credit: NASA
The cracks materialized in the aft bulkhead on the lower half of the Orion multipurpose crew vehicle during a proof pressure test at NASA's Kennedy Space Center in mid-November, according to Joshua Buck, a NASA spokesperson.
"The cracks are in three adjacent, radial ribs of this integrally machined, aluminum bulkhead," Buck said. "The cracks did not penetrate the pressure vessel skin, and the structure was holding pressure after the anomaly occurred."
Engineers will scan the cracks with an electron microscope to investigate the cause, said Bill Gerstenmaier, associate administrator of NASA's human exploration and operations mission directorate, in a presentation to a NASA Advisory Council subcommittee.
According to Buck, "the intent is diagnose root cause and repair the cracks in time to support a second scheduled window for loads testing early next year."
Since the Orion spacecraft's pressure vessel arrived at Kennedy Space Center in late June, technicians have continued assembly of the crew module and finished the first proof pressure test, which was designed to validate engineering models and verify the Orion pressure shell's structural integrity.
The Orion pressure shell enters a chamber for pressure testing at NASA's Kennedy Space Center in Florida. Credit: NASA/Ben Smegelsky
During the proof pressure test, engineers pumped air into the crew module to check the structure's ability to hold pressure against the ambient atmosphere at sea level. The test simulates what the spacecraft will see in space, when it must hold pressure against a vacuum.
Cracks have occurred during pressure tests of other spacecraft, including a Russian Soyuz capsule's descent module, which was damaged in a prelaunch test in January. Russia scrapped the module and delayed the launch of three space station astronauts until a replacement was ready.
The schedule calls for installation of Orion's attitude control thrusters, parachutes, avionics and heat shield in the first half of 2013 before the crew capsule is attached to a mock-up service module.
Lockheed Martin Corp., the Orion capsule's prime contractor, is in charge of the 2014 mission, known as Exploration Flight Test-1. The company will oversee the flight in partnership with NASA, which will receive post-flight data.
A United Launch Alliance Delta 4-Heavy rocket will launch the capsule from Cape Canaveral Air Force Station, Fla., into an elliptical orbit reaching 3,600 miles above Earth. From there, the the Orion will dive back into Earth's atmosphere at more than 20,000 mph, giving engineers key data on how the spacecraft responds to a re-entry at speeds nearly replicating what the capsule will see when returning from deep space missions to the moon, asteroids and other destinations.
Artist's concept of the Orion spacecraft and the Delta 4 rocket's upper stage on the EFT-1 flight test. Credit: NASA
The uncrewed multi-hour flight is scheduled to launch in September 2014, and Buck said NASA does not expect the crack issue to affect the launch date, which is driven by the availability of Orion's Delta 4 launcher in ULA's manifest, according to NASA officials. NASA and Lockheed Martin aim to have the Orion crew vehicle and a structural mock-up of its service module ready for launch operations by December 2013.
After splashdown in the Pacific Ocean, crews will recover the Orion crew vehicle and outfit the capsule for an ascent abort test.
NASA's Space Launch System, a heavy-lift rocket derived from the space shuttle, will launch the second Orion space mission in late 2017 on a flyby around the moon.
The first Orion mission with astronauts is set to fly on the second Space Launch System flight in 2021 to a high-altitude orbit around the moon.
宇宙飞船的耐压试验是在地面往飞船施加最大工作压力的1.1~1.7倍压力来检验飞船安全性的一种必需试验。
http://spaceflightnow.com/news/n1211/23eft1cracks/
Cracks discovered in Orion capsule's pressure shell
BY STEPHEN CLARK
SPACEFLIGHT NOW
Posted: November 23, 2012
8Three cracks appeared in NASA's first space-bound Orion crew exploration vehicle during a proof pressure test this month, according to agency officials, but the anomaly and anticipated repairs are not expected to impact the schedule for the capsule's first orbital test flight in late 2014.
Photo of one of three cracks on radial ribs on Orion's aft bulkhead. Credit: NASA
The cracks materialized in the aft bulkhead on the lower half of the Orion multipurpose crew vehicle during a proof pressure test at NASA's Kennedy Space Center in mid-November, according to Joshua Buck, a NASA spokesperson.
"The cracks are in three adjacent, radial ribs of this integrally machined, aluminum bulkhead," Buck said. "The cracks did not penetrate the pressure vessel skin, and the structure was holding pressure after the anomaly occurred."
Engineers will scan the cracks with an electron microscope to investigate the cause, said Bill Gerstenmaier, associate administrator of NASA's human exploration and operations mission directorate, in a presentation to a NASA Advisory Council subcommittee.
According to Buck, "the intent is diagnose root cause and repair the cracks in time to support a second scheduled window for loads testing early next year."
Since the Orion spacecraft's pressure vessel arrived at Kennedy Space Center in late June, technicians have continued assembly of the crew module and finished the first proof pressure test, which was designed to validate engineering models and verify the Orion pressure shell's structural integrity.
The Orion pressure shell enters a chamber for pressure testing at NASA's Kennedy Space Center in Florida. Credit: NASA/Ben Smegelsky
During the proof pressure test, engineers pumped air into the crew module to check the structure's ability to hold pressure against the ambient atmosphere at sea level. The test simulates what the spacecraft will see in space, when it must hold pressure against a vacuum.
Cracks have occurred during pressure tests of other spacecraft, including a Russian Soyuz capsule's descent module, which was damaged in a prelaunch test in January. Russia scrapped the module and delayed the launch of three space station astronauts until a replacement was ready.
The schedule calls for installation of Orion's attitude control thrusters, parachutes, avionics and heat shield in the first half of 2013 before the crew capsule is attached to a mock-up service module.
Lockheed Martin Corp., the Orion capsule's prime contractor, is in charge of the 2014 mission, known as Exploration Flight Test-1. The company will oversee the flight in partnership with NASA, which will receive post-flight data.
A United Launch Alliance Delta 4-Heavy rocket will launch the capsule from Cape Canaveral Air Force Station, Fla., into an elliptical orbit reaching 3,600 miles above Earth. From there, the the Orion will dive back into Earth's atmosphere at more than 20,000 mph, giving engineers key data on how the spacecraft responds to a re-entry at speeds nearly replicating what the capsule will see when returning from deep space missions to the moon, asteroids and other destinations.
Artist's concept of the Orion spacecraft and the Delta 4 rocket's upper stage on the EFT-1 flight test. Credit: NASA
The uncrewed multi-hour flight is scheduled to launch in September 2014, and Buck said NASA does not expect the crack issue to affect the launch date, which is driven by the availability of Orion's Delta 4 launcher in ULA's manifest, according to NASA officials. NASA and Lockheed Martin aim to have the Orion crew vehicle and a structural mock-up of its service module ready for launch operations by December 2013.
After splashdown in the Pacific Ocean, crews will recover the Orion crew vehicle and outfit the capsule for an ascent abort test.
NASA's Space Launch System, a heavy-lift rocket derived from the space shuttle, will launch the second Orion space mission in late 2017 on a flyby around the moon.
The first Orion mission with astronauts is set to fly on the second Space Launch System flight in 2021 to a high-altitude orbit around the moon.
额，哪位大虾来翻译一下。
不知道TB会不会中枪？
Orion太空舱的压力壳中发现的裂缝
由斯蒂芬·克拉克
现在宇宙飞行
发布日期：2012年11月23日
一个证明压力测试过程中，8Three裂缝出现在美国航空航天局的第一个空间，结合猎户座乘员探索车这个月，根据机构的官员，但的异常和预期的维修都没有预计到影响胶囊的第一个轨道试验飞行在2014年年底的时间表。
猎户座的后舱壁上的三个裂缝径向肋骨的照片。来源：NASA
裂缝物化在一个的证明压力测试在11月中旬在美国航空航天局的肯尼迪航天中心，“猎户座”多用途船员车辆的下半部分后舱壁上，美国航空航天局发言人约书亚巴克。
，“巴克说：”这些裂纹在三个相邻的，整体加工，铝隔板的径向肋骨。 “破解没有穿透压力容器皮肤，和结构的异常发生后的保压。”
工程师将扫描电子显微镜的裂缝原因进行调查，葛斯坦迈亚比尔说，美国航空航天局的人类探索和作战任务的首长，副署长在提交给美国航天局的咨询委员会小组委员会。
根据巴克“的意图是诊断的根本原因，并修复裂缝的时间，以支持第二个计划窗口的负载测试明年年初。”
“猎户座”飞船的压力容器抵达肯尼迪航天中心在六月下旬以来，技术人员继续乘员舱的组装，并完成了第一个的证明压力测试，其目的是验证工程模型，并验证“猎户座”压力壳的结构完整性。
猎户座压力壳进入美国航空航天局在佛罗里达州的肯尼迪航天中心的腔室压力测试。 NASA /本Smegelsky的：
在的证明压力测试，工程师泵空气进入乘员舱检查结构的能力，保持对大气环境的压力在海平面。该测试模拟，飞船将看到的空间时，它必须保持高压打击真空。
压力测试的其他航天器，其中包括一名俄罗斯联盟号太空舱的下降损坏的模块，这是在发射前的测试在1月期间发生的裂缝。俄罗斯报废的模块，并延迟推出，直至更换空间站宇航员准备。
计划要求安装猎户座的姿态控制推进器，降落伞，航空电子设备和隔热在2013年上半年之前，乘员舱连接到一个模拟服务模块。
Orion太空舱的主承包商，洛克希德·马丁公司负责的2014年使命，被称为探索飞行试验1。该公司将负责合作伙伴关系NASA，将接收飞行数据的飞行。
将推出一个联合发射联盟的德尔塔4重型火箭从佛罗里达州卡纳维拉尔角空军站，胶囊达5700公里，地球进入一个椭圆形轨道。从那里，的的猎户座潜水进入地球大气层超过20000英里，给工程师的关键数据如何航天器的响应一个重新的进入速度几乎复制什么的胶囊会看到当返回从深空飞行任务到月球，小行星和其他目的地。
“猎户座”飞船和德尔塔4火箭的上面级的EFT-1飞行试验的艺术家的概念。来源：NASA
在uncrewed多小时的飞行是计划在2014年9月推出，和巴克说，美国航空航天局并没有预期的裂缝问题，以影响的推出日期，这是驱动的猎户座的德尔塔4发射器ULA的清单中的可用性，根据美国航空航天局的官员。 NASA和洛克希德·马丁公司的目标，有猎户座“乘员车辆和服务模块结构模拟准备2013年12月发射操作。
溅落在太平洋后，摄制组将恢复猎户座“乘员车辆和装备胶囊的上升中止测试。
美国航空航天局的太空发射系统，一个沉重的来自航天飞机的火箭，将在2017年底推出的第二猎户座航天飞行任务，在绕月球飞掠。
猎户座的第一个任务的宇航员在2021年的第二次太空发射系统飞行高海拔的轨道绕月球飞行。
由斯蒂芬·克拉克
现在宇宙飞行
发布日期：2012年11月23日
一个证明压力测试过程中，8Three裂缝出现在美国航空航天局的第一个空间，结合猎户座乘员探索车这个月，根据机构的官员，但的异常和预期的维修都没有预计到影响胶囊的第一个轨道试验飞行在2014年年底的时间表。
猎户座的后舱壁上的三个裂缝径向肋骨的照片。来源：NASA
裂缝物化在一个的证明压力测试在11月中旬在美国航空航天局的肯尼迪航天中心，“猎户座”多用途船员车辆的下半部分后舱壁上，美国航空航天局发言人约书亚巴克。
，“巴克说：”这些裂纹在三个相邻的，整体加工，铝隔板的径向肋骨。 “破解没有穿透压力容器皮肤，和结构的异常发生后的保压。”
工程师将扫描电子显微镜的裂缝原因进行调查，葛斯坦迈亚比尔说，美国航空航天局的人类探索和作战任务的首长，副署长在提交给美国航天局的咨询委员会小组委员会。
根据巴克“的意图是诊断的根本原因，并修复裂缝的时间，以支持第二个计划窗口的负载测试明年年初。”
“猎户座”飞船的压力容器抵达肯尼迪航天中心在六月下旬以来，技术人员继续乘员舱的组装，并完成了第一个的证明压力测试，其目的是验证工程模型，并验证“猎户座”压力壳的结构完整性。
猎户座压力壳进入美国航空航天局在佛罗里达州的肯尼迪航天中心的腔室压力测试。 NASA /本Smegelsky的：
在的证明压力测试，工程师泵空气进入乘员舱检查结构的能力，保持对大气环境的压力在海平面。该测试模拟，飞船将看到的空间时，它必须保持高压打击真空。
压力测试的其他航天器，其中包括一名俄罗斯联盟号太空舱的下降损坏的模块，这是在发射前的测试在1月期间发生的裂缝。俄罗斯报废的模块，并延迟推出，直至更换空间站宇航员准备。
计划要求安装猎户座的姿态控制推进器，降落伞，航空电子设备和隔热在2013年上半年之前，乘员舱连接到一个模拟服务模块。
Orion太空舱的主承包商，洛克希德·马丁公司负责的2014年使命，被称为探索飞行试验1。该公司将负责合作伙伴关系NASA，将接收飞行数据的飞行。
将推出一个联合发射联盟的德尔塔4重型火箭从佛罗里达州卡纳维拉尔角空军站，胶囊达5700公里，地球进入一个椭圆形轨道。从那里，的的猎户座潜水进入地球大气层超过20000英里，给工程师的关键数据如何航天器的响应一个重新的进入速度几乎复制什么的胶囊会看到当返回从深空飞行任务到月球，小行星和其他目的地。
“猎户座”飞船和德尔塔4火箭的上面级的EFT-1飞行试验的艺术家的概念。来源：NASA
在uncrewed多小时的飞行是计划在2014年9月推出，和巴克说，美国航空航天局并没有预期的裂缝问题，以影响的推出日期，这是驱动的猎户座的德尔塔4发射器ULA的清单中的可用性，根据美国航空航天局的官员。 NASA和洛克希德·马丁公司的目标，有猎户座“乘员车辆和服务模块结构模拟准备2013年12月发射操作。
溅落在太平洋后，摄制组将恢复猎户座“乘员车辆和装备胶囊的上升中止测试。
美国航空航天局的太空发射系统，一个沉重的来自航天飞机的火箭，将在2017年底推出的第二猎户座航天飞行任务，在绕月球飞掠。
猎户座的第一个任务的宇航员在2021年的第二次太空发射系统飞行高海拔的轨道绕月球飞行。
wxzxf 发表于 2012-11-25 21:54 ![]()
不知道TB会不会中枪？
中国的宇宙飞船不大会有同样问题。
结构力学告诉我们，压力容器的耐压能力和直径成反比。
美国的新一代航天人可能拥有天顶星材料，所以敢设计乘坐7人的飞船，中国老实本分跟在俄国人后面玩3人飞船。
不知道TB会不会中枪？
中国的宇宙飞船不大会有同样问题。
结构力学告诉我们，压力容器的耐压能力和直径成反比。
美国的新一代航天人可能拥有天顶星材料，所以敢设计乘坐7人的飞船，中国老实本分跟在俄国人后面玩3人飞船。