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07:53德爾塔4火箭發射,載荷為美國政府的WGS-8軍用通信衛星。還剩2次發射。
星箭分離，發射成功！
7Dec2016 19:34:44 EST
WGS-8 spacecraft separation
With the remaining Delta IV second stage and WGS-8 spacecraft flying over the Indian ocean east of Madagascar the spacecraft has separated from the D4SS and is now flying on orbit under its own power. This completes the mission for the US Air Force today.
7Dec2016 19:25:34 EST
MECO-2
The second stage main engine has now completed its task and has shut down. There will now be an 8 minute cruise as the spacecraft is prepared for separation.
7Dec2016 19:22:26 EST
MES-2
The second stage main engine has now been restarted for the final time in this flight. The burn will last for about 3 minutes as the WGS-8 spacecraft is oriented and placed into the desired orbit.
WGS 1, launched by an Atlas-V on Oct. 10, 2007, was parked over the Pacific to provide coverage from the west coast of North America to Southeast Asia.
WGS 2 was launched by an Atlas-V to a location over the Indian Ocean to provide U.S. Central Command with coverage of Afghanistan, Iraq, and other parts of Southwest Asia.
WGS 3 was launched on a Delta-IV Medium+ on Dec. 6, 2009, to cover the Eastern Atlantic, including the U.S. European Command, Africa Command, and portions of the Middle East.
WGS 4, the first of the Block II satellites, was launched on a Delta-IV+ on Jan. 20, 2012, and configured to especially aid communications with U.S. drones operating in the Middle East and Southeast Asia, and support U.S. Central Command and U.S. Pacific Command.
WGS 5 was launched by a Delta-IV medium+ on May 24, 2016, to provide to the U.S. and Canada, including Northern Command, Southern Command, Transportation Command, Strategic Command, the Missile Defense Agency, and a multitude of other users in the Western Hemisphere.
WGS 6, to primarily service Australia and South and North America, was launched on a Delta-IV Medium+ on Aug. 7, 2013.
WGS 7 was launched on July 24, 2015, and was positioned over the Central Pacific to cover areas from Australia to Asia. All of these high power spacecraft are fully operational, with 14-year lifetimes, predicted from their individual launch dates, said Boeing.
WGS-8 will mark ULA’s 70th national security launch since the company was founded in 2006. This is the sixth flight in the Medium+ (5,4) configuration; all launches in this configuration have been for WGS missions.
http://www.americaspace.com/?p=96911
【發射統計】2016年11月份，全世界一共進行了9次航天發射：中國4次；美國2次；日本1次；歐空局1次；俄羅斯1次。截止11月底，全年共73次：美國19次，另外地麵爆炸1次；中國19次(失敗1次)；俄羅斯16次；歐空局9次；印度6次；日本2次；朝鮮1次；以色列1次。
2016的航天發射，美國今年還有2次，中國剩4-5次。一切順利的話，中國將首次站在年度發射次數世界第一的位置(23-24次)。 年初的目標是27-28次。 ·
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