The aircraft had reached its cruising altitude of about 39,000 feet.
那架飞机已经达到了大约三万九千英尺的巡航高度。
The lower oxygen pressure found in an aircraft cabin is equivalent to that at 6,000-8,000 feet of altitude.
机舱里的氧分压会更低，其数值跟6000到8000英尺高空的氧分压值一样。
The width of the boom "carpet" beneath the aircraft is about one mile for each 1000 feet of altitude.
飞机下面音爆“地毯”的宽度大约是一英里对应1000英尺的高度。
These will begin with the VSS Enterprise being carried aloft between the twin fuselages of a high-altitude carrier aircraft.
最先进行的是将企业号夹在一架高级运载飞机的机身中间带上高空。
SpaceShipTwo was dropped from an aircraft at an altitude of 13, 700 metres (45, 000 feet) and glided successfully for 11 minutes before landing in Mojave, California.
宇宙飞船2号”由一架飞行器在海拔13700米（45000英尺）处释放，并成功滑翔了11分钟后降落于加利福利亚州的摩哈维沙漠。
It will use radar, balloons and aircraft to look at the role of another sort of high-altitude cloud: cirrus clouds, which get spun off the tops of storms.
该工程将使用雷达、热气球与大气层飞行器来研究另一种高端云的作用，其名为卷云-它是在暴风雨出现时从其顶端意外形成的。
The flight test was conducted in the challenging high altitude environment required for refueling of high altitude long endurance (HALE) unmanned aircraft systems (UAS).
这次飞行测试是在充满挑战的高空环境下进行的，这也是高空长航(HALE)无人机(uas)加油所需的环境。
This gives the Joint STARS aircraft higher operational altitude and longer mission duration, while significantly reducing the maintenance burden of the older engines.
这使联合星飞机飞得更高，延长执行任务的持续时间，同时大大降低了旧发动机的维护负担。
There are several factors that can influence sonic booms -- weight, size, and shape of the aircraft or vehicle, plus its altitude, attitude and flight path, and weather or atmospheric conditions.
有几个因素可以影响音爆——飞行器的重量，大小，形状以及其飞行高度，姿势和路线，还有天气或大气状况。
The carbon-fiber aircraft reached a maximum speed of 68 knots (groundspeed), an average speed of 23 knots and a maximum altitude of 8, 564 metersabove sea level, a statement said.
有评论说，这架碳纤维的飞行器最高速度达到68节（水平速度），平均速度为23节，飞行高度最高为海拔8546米。
Capable of flying above 16, 000 feet, the unmanned aircraft provides low-altitude reconnaissance.
“扫描鹰”的最大飞行高度超过4880米(16000英尺)，可以提供低空侦察能力。
Climbing during daylight hours, the prototype aircraft ultimately reached an altitude just short of 30, 000 meters, breaking records for non-rocket powered flight.
在白天爬升，原型机最终达到海拔30000米的高度，打破了非火箭动力飞行的高度纪录。
In a key risk reduction flight test, Northrop Grumman's Proteus test aircraft and a NASA Global Hawk flew as close as 40 feet apart at an altitude of 45,000 feet, an industry-setting record.
在飞行试验中，诺斯罗普·格鲁门公司的一架Proteus试验机和美国航天局的一架全球鹰飞行在13716米(4.5万英尺)的高空，距离接近12.2米(40英尺)，创造了行业纪录。
The official said that Pakistan has radars that can detect aircraft flying at an altitude of 25-29 kilometres but the country still lacks a weapon system to hit such planes.
该官员称巴基斯坦的雷达可以侦测到飞行在25 -29公里高度的战机，但这个国家却缺少打击这个高度的武器系统。
A flight over a specific location, usually at low altitude, as by a formation of military aircraft.
低空编队飞行：在某特定地点上空飞行，通常在低空，如有军用飞机编队进行的。
The airborne laser rangefinder can offer an accurate and economical solution for low altitude delivery of balls. Recommendations for safety precautions and aircraft window are also made.
机载激光测距机能为武器的低空发射提供精确而经济的方案，还对安全防护和飞机窗口提出建议。
For the aircraft without altitude stabilizer, airdrop will induce a decrease of the flight altitude.
对于无高度稳定的飞机，货物投放会引起飞行高度的降低。
This article is modeling the flight path of aircraft, which acquainted enroute climb pressure altitude and drawing the enroute climb path.
对飞机航路爬升的飞行轨迹进行了二维模拟，并绘制出了飞机航路爬升时的飞行轨迹曲线和其他分析曲线。
The response characteristic of moving-mass control for the low-altitude aircraft is researched based on the moving-mass control system model of the flying saucer.
在建立碟形飞行器变质量矩控制数学模型的基础上，对低空飞行器变质量矩控制的响应特性进行了仿真研究。
Total Vertical Error (TVE) : Vertical geometric difference between barometric altitude in actual flight of aircraft and designated barometric altitude (flight level).
总垂直误差(TVE)：航空器实际飞行的气压高度和指定的气压高度(飞行高度层)之间的垂直几何差值。
Jumping from a low - altitude mock-up of an aircraft. This exercise allows you to train proper landing.
从一个低高度的飞机模拟工事上跳下来，这个练习训练你合适的出舱姿势。
When it becomes necessary to examine the altitude performance of an aircraft engine, three types of facilities may be used-altitude wind tunnels, altitude test beds and flying test beds.
当需要考察一台航空发动机的高空性能时，可以利用三种型式的设备，即高空风洞、高空试验台和飞行试验台。
Atmospheric neutron is the main radioactive particle in the near space that induced single event effects (SEE) and seriously imperils the safety of the aircraft at this altitude.
大气中子是这一区域诱发元器件发生单粒子效应最主要的原因，严重威胁着临近空间飞行器安全、可靠地工作。
Atmospheric neutron is the main radioactive particle in the near space that induced single event effects (SEE) and seriously imperils the safety of the aircraft at this altitude.
大气中子是这一区域诱发元器件发生单粒子效应最主要的原因，严重威胁着临近空间飞行器安全、可靠地工作。
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