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Machine Translation:林晓弈
今天 19:40 来自 航天爱好者网超话 已编辑
【“北航4号”火箭成功发射】5月27日上午11时01分,由北航宇航学院牵头开展的学生大型综合项目“北航4号”临近空间火箭动力飞行器,在我国西北某地一飞冲天。400s后,顺利降落在了预定的位置,飞行数据显示,火箭助推点火正常、出架正常,分离正常、主级高空点火正常,按照预定弹道完成了飞行,首飞试验取得圆满成功!
“北航4号”临近空间火箭动力飞行器全长8.7m,重约1300kg,由固体动力助推器和固液动力巡航主级组成。其中,固体助推火箭发动机推力约150kN,工作时间8.2s;固液巡航火箭发动机采用98%过氧化氢/端羟基聚丁二烯推进剂组合,最大推力约3kN,推力调节比3:1,工作时间大于200s。飞控采用GPS/北斗双模光纤惯导系统,实现有控巡航飞行。
试验队员进行“北航4号”发射准备工作
本次飞行完成什么任务?
此次飞行主要完成有动力临近空间飞行的演示验证,平飞高度24km,平飞速度3Ma,飞行距离近200km。
此次飞行试验成功验证了长时间变推力固液火箭发动机技术和大空域、宽速域火箭动力飞行器总体设计、导航制导与飞行控制技术,可应用于临近空间大气参数测量、对地观测和空中数据快速传输,未来可发展成为低成本/快速响应小型运载火箭等新型火箭动力飞行器。
Today at 19:40 from the aerospace fan network super talk
[Successful launch of Beihang 4 rocket]
At 11:01 am on May 27th, a large-scale comprehensive student project "Beihang 4" led by Beihang University of Aeronautics and Astronautics flew into the sky in northwest China. After 400s, it landed smoothly at the predetermined position. The flight data showed that the rocket booster ignition was normal, the launch was normal, the separation was normal, and the main stage high-altitude ignition was normal. The flight was completed accordingly to the planned trajectory - the first flight test was a complete success!
The Beihang 4 near-space rocket is 8.7 meters long and weighs approximately 1300 kg. It consists of a solid-power booster and a solid-liquid main stage. Among them, the solid-propelled rocket engine has a thrust of about 150kN and an operating time of 8.2s; the solid-liquid main stage engine uses a combination of 98% hydrogen peroxide/hydroxyl-terminated polybutadiene propellant with a maximum thrust of about 3kN and a thrust adjustment ratio of 3:1. Working time is greater than 200s. The flight control uses GPS/Beidou dual-mode fiber optic inertial navigation system to achieve controlled cruise flight.
What mission was completed on this flight? This flight mainly completed the demonstration verification of powered near-space flight. The level flight height is 24km, the level flight speed is 3Ma, and the flight distance is nearly 200km.
This flight test successfully verified the long-endurance variable thrust solid-liquid rocket engine technology and the overall design, navigation guidance and flight control technology of large-airspace and wide variable-speed rocket. It can be applied to the measurement of atmospheric parameters in the near space, earth observation and fast data transmission over the air. In the future, it can be developed into a new type of rocket such as a low-cost/fast-response small launch vehicle.