X51完成B-52挂载测试，明年年初首飞

http://www.wpafb.af.mil/news/story.asp?id=123181749
X-51A WaveRider gets first ride aboard B-52

12月9号，爱德华空军基地，x-51a首次被B-52H携带上天
意味着X-51向两个月后的试飞又走进了一步
太平洋时间3P.M，B-52H挂载X-51样机升空至50000英尺预定高度，检验了样机与地面站的联系，以及软硬件的工作状态。飞行持续了1.4小时

The next B-52 /X-51 flight test mission is expected in mid-January, and will be a "full dress rehearsal," for its first hypersonic test flight, now planned for mid February, Brink said. The dress rehearsal flight will depart Edwards and head out over the Pacific to Point Mugu Naval Air Warfare Center Sea Range. Both airborne and multiple ground test assets will monitor all X-51A systems, but the X-51 will not be released from the B-52 and its engine will not ignite.

下一次试飞将在一月中旬进行，这将是一次“带妆彩排”，而首次正式的超音速飞行被定在明年二月
“带妆彩排”将从爱德华兹空军基地开始，飞跃太平洋溅落到Mugu Naval Air Warfare Center Sea Range，所有的空间/地面传感器均会实际运转，但是X-51与B-52分离后，自身的发动机并不会点火

Then, in February, the Air Force Flight Test Center's B-52 will carry the unmanned X-51A to approximately 50,000 feet over the Pacific Ocean then release it. A solid rocket booster from an Army Tactical Missile System (ATACMS) will then ignite and accelerate the X-51 to about Mach 4.5. Then the booster will be jettisoned and the X-51A's SJY61 supersonic combustion ramjet propulsion system will ignite and operate for about 300 seconds, propelling the cruiser to more than 6 times the speed of sound or Mach 6.

在二月的试飞中，B-52会将X-51A携带到太平洋上5w英尺高空释放，来自于ATACMS（陆军战术导弹系统）的固体推进器将把X-51加速到Mach4.5，然后X-51的SJY61超燃冲压发动机点火并工作300s，将速度提升至Mach 6。在X-51溅落太平洋之前所有实验数据会实时传输回地面站，没有计划要回收试飞样机

X-51由Air Force, DARPA，P&W，Boeing联合开发

X-51的心脏，SJY61发动机由P&W制造，它的300s工作寿命是过往类似发动机的30倍，发动机启动时燃烧乙烯和JP-7的混合物，随后转为完全使用JP-7，燃料冷却系统帮助发动机耐受极端高温的考验

巴拉巴拉巴拉…………（一堆不打粮食的话）

http://www.wpafb.af.mil/news/story.asp?id=123181749
X-51A WaveRider gets first ride aboard B-52

12月9号，爱德华空军基地，x-51a首次被B-52H携带上天
意味着X-51向两个月后的试飞又走进了一步
太平洋时间3P.M，B-52H挂载X-51样机升空至50000英尺预定高度，检验了样机与地面站的联系，以及软硬件的工作状态。飞行持续了1.4小时

The next B-52 /X-51 flight test mission is expected in mid-January, and will be a "full dress rehearsal," for its first hypersonic test flight, now planned for mid February, Brink said. The dress rehearsal flight will depart Edwards and head out over the Pacific to Point Mugu Naval Air Warfare Center Sea Range. Both airborne and multiple ground test assets will monitor all X-51A systems, but the X-51 will not be released from the B-52 and its engine will not ignite.

下一次试飞将在一月中旬进行，这将是一次“带妆彩排”，而首次正式的超音速飞行被定在明年二月
“带妆彩排”将从爱德华兹空军基地开始，飞跃太平洋溅落到Mugu Naval Air Warfare Center Sea Range，所有的空间/地面传感器均会实际运转，但是X-51与B-52分离后，自身的发动机并不会点火

Then, in February, the Air Force Flight Test Center's B-52 will carry the unmanned X-51A to approximately 50,000 feet over the Pacific Ocean then release it. A solid rocket booster from an Army Tactical Missile System (ATACMS) will then ignite and accelerate the X-51 to about Mach 4.5. Then the booster will be jettisoned and the X-51A's SJY61 supersonic combustion ramjet propulsion system will ignite and operate for about 300 seconds, propelling the cruiser to more than 6 times the speed of sound or Mach 6.

在二月的试飞中，B-52会将X-51A携带到太平洋上5w英尺高空释放，来自于ATACMS（陆军战术导弹系统）的固体推进器将把X-51加速到Mach4.5，然后X-51的SJY61超燃冲压发动机点火并工作300s，将速度提升至Mach 6。在X-51溅落太平洋之前所有实验数据会实时传输回地面站，没有计划要回收试飞样机

X-51由Air Force, DARPA，P&W，Boeing联合开发

X-51的心脏，SJY61发动机由P&W制造，它的300s工作寿命是过往类似发动机的30倍，发动机启动时燃烧乙烯和JP-7的混合物，随后转为完全使用JP-7，燃料冷却系统帮助发动机耐受极端高温的考验

巴拉巴拉巴拉…………（一堆不打粮食的话）