Leenn019--美空军第20批次“全球鹰”无人机进行燃油测试

来源:百度文库 编辑:超级军网 时间:2024/03/29 19:18:38
Global Hawk passes fuel test
by Airman 1st Class Mike Young
95th Air Base Wing Public Affairs
美空军第20批次“全球鹰”无人机进行燃油测试

美空军近开始在爱德华兹空军基地对第20批次RQ-4“全球鹰”无人机进行为期一周的燃油系统测试。测试工作由第452飞行测试中队负责,包括在重量和平衡仓(配载仓)内将燃油空载的飞机倾斜20度模拟着陆状态,以便工作人员确定该型机误降情况下所需的燃油量。第20批次的“全球鹰”无人机相比第10批次型机载荷提高1000磅(约合454公斤),燃油载荷提高6000磅(约合2722公斤)。因此由于整机重量的提高,必须要对新机所需要的最低燃油量进行重新测算。此外,工作人员还对该型机进行了合成燃料替代标准JP-8燃油试验,一切进展顺利。
10/22/2007 - EDWARDS AIR FORCE BASE, Calif. (AFPN) -- The 452nd Flight Test Squadron pushed the RQ-4 Global Hawk Block 20 to its fuel system limits during a week-long starvation test here.

The testing involved tilting the aircraft to a 20-degree angle while running the aircraft out of fuel inside the weight and balance hangar.

"The testing is very important," said Lt. Col. Andy Thurling, the 452nd FLTS commander. "It allows us to know the aircraft's fuel requirements in case of a missed landing. This will allow for longer flights and more efficiency in the air."

The Block 20 carries 1,000 pounds more payload and 6,000 pounds more fuel than the Block 10, said Capt. Stephen Leggiero, the 773rd Test Squadron project engineer. Because of the increase in weight, additional fuel is required for the aircraft. This means an entirely new fuel cell configuration and fuel management system was necessary.

Aside from the starvation testing, the team performed a weight and balance test on the aircraft to determine how changes in fuel weight change the aircraft's center of gravity.

During the test, the Global Hawk was weighed then placed on blocks to allow additional ground clearance for the tail of the aircraft.

After preparation, the team fired up the engines and began to tilt the aircraft.

"We tilted the aircraft at the high 20-degree angle to simulate a go-around situation," said 2nd Lt. Garrison Lindholm, the 773rd TS subsystem engineer.

A go-around is where the aircraft misses an approach and is required to climb at a
steeper attitude, he said.

"We wanted to ensure that at the steep deck angle, the pumps would not create an engine flame out resulting in engine failure," Lieutenant Lindholm said.

The main parameter for testing was weight, he said. The testers initially weighed the aircraft to determine its gross weight.

The team then weighed the aircraft again as it began to show signs of starvation, Captain Leggiero said. This was to measure the amount of fuel in the tank when fuel starvation began.

During the testing, the team used a synthetic fuel called Isopar-M instead of standard JP-8 fuel for safety purposes. The JP-8 has a lower flash point, which is the point where fuel ignites.

"Overall, the testing went very smoothly," Captain Leggiero said. "It really highlights some of the fantastic infrastructure we have on base, and the wonderful people who pulled together to make things happen."Global Hawk passes fuel test
by Airman 1st Class Mike Young
95th Air Base Wing Public Affairs
美空军第20批次“全球鹰”无人机进行燃油测试

美空军近开始在爱德华兹空军基地对第20批次RQ-4“全球鹰”无人机进行为期一周的燃油系统测试。测试工作由第452飞行测试中队负责,包括在重量和平衡仓(配载仓)内将燃油空载的飞机倾斜20度模拟着陆状态,以便工作人员确定该型机误降情况下所需的燃油量。第20批次的“全球鹰”无人机相比第10批次型机载荷提高1000磅(约合454公斤),燃油载荷提高6000磅(约合2722公斤)。因此由于整机重量的提高,必须要对新机所需要的最低燃油量进行重新测算。此外,工作人员还对该型机进行了合成燃料替代标准JP-8燃油试验,一切进展顺利。
10/22/2007 - EDWARDS AIR FORCE BASE, Calif. (AFPN) -- The 452nd Flight Test Squadron pushed the RQ-4 Global Hawk Block 20 to its fuel system limits during a week-long starvation test here.

The testing involved tilting the aircraft to a 20-degree angle while running the aircraft out of fuel inside the weight and balance hangar.

"The testing is very important," said Lt. Col. Andy Thurling, the 452nd FLTS commander. "It allows us to know the aircraft's fuel requirements in case of a missed landing. This will allow for longer flights and more efficiency in the air."

The Block 20 carries 1,000 pounds more payload and 6,000 pounds more fuel than the Block 10, said Capt. Stephen Leggiero, the 773rd Test Squadron project engineer. Because of the increase in weight, additional fuel is required for the aircraft. This means an entirely new fuel cell configuration and fuel management system was necessary.

Aside from the starvation testing, the team performed a weight and balance test on the aircraft to determine how changes in fuel weight change the aircraft's center of gravity.

During the test, the Global Hawk was weighed then placed on blocks to allow additional ground clearance for the tail of the aircraft.

After preparation, the team fired up the engines and began to tilt the aircraft.

"We tilted the aircraft at the high 20-degree angle to simulate a go-around situation," said 2nd Lt. Garrison Lindholm, the 773rd TS subsystem engineer.

A go-around is where the aircraft misses an approach and is required to climb at a
steeper attitude, he said.

"We wanted to ensure that at the steep deck angle, the pumps would not create an engine flame out resulting in engine failure," Lieutenant Lindholm said.

The main parameter for testing was weight, he said. The testers initially weighed the aircraft to determine its gross weight.

The team then weighed the aircraft again as it began to show signs of starvation, Captain Leggiero said. This was to measure the amount of fuel in the tank when fuel starvation began.

During the testing, the team used a synthetic fuel called Isopar-M instead of standard JP-8 fuel for safety purposes. The JP-8 has a lower flash point, which is the point where fuel ignites.

"Overall, the testing went very smoothly," Captain Leggiero said. "It really highlights some of the fantastic infrastructure we have on base, and the wonderful people who pulled together to make things happen."
翻译新闻报道是不错。如果找一些较为长一点的学术性的作品来翻译一下可能更耐看啊。呵呵。
自己弄过一段时间,但长篇的从来都没有坚持下来的,总是半途而废!
  杂志文章也可以吖,长度、深度都可算居中。:P
杂志有时也力不从心,摘译习惯了,就懒得逐字逐句了!

看来我得练练定力了,哈哈