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实践二十号卫星上岗东五平台首飞成功
2020-01-07 23:50  www.281unionave.com

1月5日,我国发射重量最重、技术含量最高的高轨卫星——实践二十号卫星,成功飞抵预定工作岗位。该卫星是中国航天科技集团五院抓总研制的东方红五号卫星公用平台(以下简称东五平台)首飞试验星,将对这型新一代大型地球同步轨道卫星平台进行全面在轨验证。

On January 5, China launched the heaviest and most technical high-orbit satellite, the practice 20, which successfully arrived at its intended job. The satellite is the first pilot satellite of the Dongfanghong-5 satellite public platform (hereinafter referred to as Dong5 platform) developed by the Fifth Hospital of China Aerospace Science and Technology Group.

五院实践二十号卫星总设计师李峰介绍,目前卫星已完成转移轨道变轨工作,对东五平台的主要关键技术进行了验证,东五平台首飞取得成功。后续将继续开展在轨试验与验证工作。

Li feng, chief designer of the fifth institute's practice 20 satellite, said that the satellite had now completed the shift of orbit, verified the main key technologies of the east five platform, and the first flight of the east five platform was successful. Follow-up on-orbit testing and validation will continue.

记者从五院实践二十号卫星飞控试验队了解到,该卫星自2019年12月27日发射以来,在9天内完成了一系列高难度动作,并开展了一系列新技术在轨试验验证,取得了重要试验成果。包括:

The reporter learned from the practice 20 satellite flight control test team of the Fifth Hospital that the satellite has completed a series of high-difficult movements in nine days since its launch on December 27,2019, and carried out a series of new technology in-orbit test verification, and achieved important test results. Includes:

我国面积最大、展开方式最复杂太阳翼,完成了“一次展开”和“二次二维展开”动作。实践二十号卫星拥有一副巨型太阳翼,比波音737飞机的翼展还要宽10米。作为国内首个“绷弦式”太阳翼,机电部分的重量比由以往型号的1∶1下降至1∶2,机电重量比为历史最低。这样巨大而轻巧的太阳翼,展开方式也非同寻常。

China's largest area, the most complex expansion of the solar wing, completed the \"one expansion\" and \"two-dimensional expansion\" action. Real 20 has a giant solar wing 10 metres wider than the wingspan of a Boeing 737. As the first \"taut-string\" solar wing in China, the weight of the electromechanical part decreased from 1:1 to 1:2 in the previous model, and the mechanical and electrical weight ratio was the lowest in history. Such a huge, lightweight solar wing is also unusual in its way.

该卫星进入轨道之初,不需要太多能源,因此太阳翼进行“一次展开”,只展开了一小部分。在太空飞行约一周后,卫星抵达距地面约36000公里的地球同步轨道,太阳翼也实施了“二次二维展开”,全部展开后面积大大增加。

The satellite didn't need much energy at the beginning of its orbit, so the solar wing was \"unfolding at one time \", expanding only a fraction. About a week after the space flight, the satellite reached a geostationary orbit about 36000 km above the ground, and the solar wing also implemented a \"two-dimensional expansion \", all of which greatly increased its area.

实践二十号卫星完成7次变轨。在抵达地球同步轨道前,该卫星经历了7次轨道机动。轨道机动的主角是化学推进系统,它最重要的任务就是接替运载火箭,使用高性能化学推进系统,将卫星送到预定工作轨道。轨道机动是对化学推进系统主要性能的全面考核,在这7次轨道机动中,化学推进系统表现优异。

Practice satellite 20 to complete 7 orbit changes. Before reaching geostationary orbit, the satellite underwent seven orbital maneuvers. The main role of the orbit maneuver is the chemical propulsion system, whose most important task is to replace the launch vehicle and use the high-performance chemical propulsion system to send the satellite to its intended working orbit. Track maneuvering is a comprehensive assessment of the main performance of the chemical propulsion system. In these seven track maneuvers, the chemical propulsion system performs well.

后续,实践二十号卫星的电推进系统,将接过接力棒,帮助卫星精确“停留”在定点位置。化学推进系统将“退居二线”,等到需要的时候再顶上。

Follow-up, the practice of satellite 20 electric propulsion system, will take the baton, to help the satellite precise \"stay\" in the fixed position. The chemical propulsion system will be \"second-tier\" and will top when needed.

矢量调节机构解锁成功。1月4日,实践二十号卫星成功完成了双轴矢量调节机构首次在轨操作,4台机构顺利解锁,并高精度转动至目标角度,为后续电推进系统顺利点火奠定了坚实基础。

vector adjustment mechanism unlocked successfully. On january 4, the practice satellite 20 successfully completed the first operation of the biaxial vector regulating mechanism in orbit, and the four mechanisms were successfully unlocked and turned to the target angle with high precision, which laid a solid foundation for the successful ignition of the subsequent electric propulsion system.

矢量调节机构是为实现实践二十号卫星电推进系统效果最大化而配备的关键产品,可以调整发动机推力的方向。此后,电推进系统根据卫星任务计划点火,将在卫星全寿命周期内一直担负起位置保持和动量轮卸载任务,确保卫星始终坚守岗位。

Vector regulating mechanism is a key product to realize the maximum effect of satellite electric propulsion system, which can adjust the direction of engine thrust. Since then, the electrical propulsion system has ignited in accordance with the satellite mission plan, and will continue to carry out position-keeping and momentum-wheel unloading missions throughout the lifetime of the satellite, ensuring that the satellite remains in place.

激光终端在轨解锁成功。1月4日,实践二十号卫星激光终端在轨解锁成功,随即开展了大范围转动机构功能检查,产品状态良好。该产品将开展高速相干激光通信等一系列试验,进一步积累卫星激光通信链路的工程数据,为后续研制更高速率激光通信载荷奠定技术基础,满足高速星间、星地信息传输的需求。

the laser terminal is unlocked successfully in orbit. On january 4, the practice 20 satellite laser terminal in orbit unlocked successfully, immediately carried out a wide range of rotating mechanism function inspection, the product is in good condition. The product will carry out a series of experiments such as high-speed coherent laser communication, further accumulate engineering data of satellite laser communication link, lay a technical foundation for the subsequent development of higher-speed laser communication load, and meet the needs of high-speed inter-satellite and inter-satellite information transmission.

东五平台是我国自主开发的新一代大型地球同步轨道卫星平台。按照设计指标,基于东五平台的卫星起飞重量可达8至9吨,载荷承载能力可达至吨;整星功率28千瓦以上,提供载荷功率达18千瓦;载荷舱散热能力达9千瓦;设计寿命达16年。

The East Fifth Platform is a new generation large-scale geostationary orbit satellite platform developed independently in China. According to the design indicators, the take-off weight of satellites based on the East Five Platform can reach 8 to 9 tons, and the load carrying capacity can reach to tons; the whole star power is over 28 kilowatts, and the load power is 18 kilowatts; the heat dissipation capacity of the load compartment is 9 kilowatts; and the design life is 16 years.

更重要的是,东五平台可以满足不同功能卫星研制需求,可广泛应用于高轨通信、微波遥感、光学遥感、空间科学探测、科学试验、在轨服务等多个领域,是世界航天领域少有的多适应性平台。

More importantly, the platform can meet the needs of different functional satellite development, and can be widely used in high-orbit communication, microwave remote sensing, optical remote sensing, space science exploration, scientific testing, in-orbit services and other fields, is a rare multi-adaptive platform in the world space field.

五院总工程师、实践二十号卫星总指挥、东五平台总指挥周志成院士介绍,与我国现役主力产品东三、东四平台相比,东五平台在重量、功率、寿命等关键性能指标上有着跨越式提升,将填补我国大型卫星平台型谱的空白,可满足未来20年的大容量卫星应用需求。

Academician Zhou Zhicheng, chief engineer of the Fifth Hospital, commander-in-chief of the practice 20 satellite and commander-in-chief of the East Fifth Platform, introduced that compared with the main products in active service in China, the East Third and East Fourth Platforms, the East Fifth Platforms have a leapfrogging in key performance indexes such as weight, power and life, which will fill the gap of large-scale satellite platform spectrum in China and meet the needs of large-capacity satellite applications in the next 20 years.

此外,东五平台还创新设计理念,实现了智能化自主运行管理,从而有效提升卫星的好用、易用性;通过分舱模块化设计和数字化研制模式,大幅缩短研制周期,有效提高了设计生产效率。该平台的单机国产化率达100%,将有力牵引我国航天装备发展。

In addition, the East five platform also innovates the design idea, realizes the intelligent independent operation management, thus effectively enhances the satellite's good use, the ease of use; through the compartment modular design and the digital development pattern, greatly shortens the development cycle, effectively enhances the design production efficiency. The single-machine localization rate of the platform reaches 100%, which will be a powerful traction for the development of space equipment in China.

记者了解到,实践二十号卫星后续将开展实用化的在轨测试工作,进一步验证东五平台各项关键技术。(孔晓燕郭兆炜薛英民本报记者付毅飞)

Reporters learned that the practice of satellite 20 will carry out practical on-orbit testing work to further verify the key technologies of the platform. (Hong Kong, Hong Kong)