共查询到19条相似文献,搜索用时 93 毫秒
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为提高制导控制系统在运载火箭全发射任务周期中的智慧水平,提高运载火箭完成任务的鲁棒能力,从不同角度阐述了运载火箭故障模式,创新提出了基于能量属性的故障分类方法。针对不同级别的能量故障提出了对制导控制系统的功能、性能需求。尤其针对小、中级别能量故障,简述了运载火箭故障飞行制导自适应方法应用,包含案例及任务目标变更原则等,并分析了制导自适应技术后续工程化应用的实施途径。基于能量属性的故障分类方法及制导自适应方法可应用于后续中国运载火箭工程研制。 相似文献
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针对高轨遥感卫星多载荷协同观测和一致测量应用需求,在前期总体技术方案研究的基础上,通过开展现有在轨组装航天器和高轨卫星公用平台的构型调研,提出了一种适用于多载荷协同观测需求的平台构型设计方案。平台利用CZ-5运载火箭发射并在轨展开,采用“网格式中心承力筒+板+桁架”式的总体构型,开展了主传力路径、贮箱承载结构、网格式中心承力筒等的细化设计工作,并进行了结构产品的初步设计,建立了平台结构整星的有限元模型。仿真分析表明:平台结构整星的各向一阶频率均能满足运载火箭的频率要求。基于标准化、通用化的平台接口设计,使其具备可扩展及可维修的能力,大大提升了平台鲁棒性。基于全网格筒的主承力设计,增强平台结构承载能力,并改善平台内部热环境。该设计方案可为基于在轨组装维护的高轨遥感大平台结构的设计提供有价值的参考。 相似文献
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介绍了国际航天发射市场及运载火箭的应用情况,根据美国的航天发射层次、国际航天发射市场的发射价格、国外对发射市场的需求,详细地分析了我国“长征”系列中型载火箭的应用和发展前景。 相似文献
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ISRO has developed the PSLV rocket (Polar Spacecraft Launch Vehicle) for polar orbiting satellites up to 1000 kg and is conducting a series of test missions. One of this is the IRS-P3, an remote sensing satellite with German participation. The payload consists of 3 scientific instruments: The wide field sensor WiFS for vegetation monitoring (ISRO), the imaging spectrometer MOS (DLR/Germany) for coastal zone and ocean studies an the X-ray astronomy payload (ISRO). The paper gives technical details and parameters on the launch vehicle, the satellite, the instruments and scientific goals and data utilization. 相似文献
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《中国航天(英文版)》2017,(2)
This paper introduces a launch vehicle scheme for the new generation of cryogenic and quick-launch launch vehicle(LM-6). The main technical innovations of LM-6 launch vehicle include the capability of twenty satellites launched by one vehicle, high-pressure staged combustion cycle engine and oxygen tank self-pressurization, sandwich bulkhead tank with 200 K temperature difference, and 7-day quick-launch using the "three horizontals" test and launch mode with integral transportation and erection. The future development of the quick-launch launch vehicle is predicted based upon the need for vehicle mission coverage improvement, better response speed, and stronger market competiveness. 相似文献
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S. Satish S. Selva Raju T.S. Nanjunda Swamy P.L. Kulkarni 《Acta Astronautica》2009,65(9-10):1424-1428
In a little over four decades, the Indian Space Program has carved a niche for itself with the unique application driven program oriented towards National development. The end-to-end capability approach of the space projects in the country call for innovative practices and procedures in assuring the quality and reliability of space systems. The System Reliability (SR) efforts initiated at the start of the projects continue during the entire life cycle of the project encompassing design, development, realisation, assembly, testing and integration and during launch. Even after the launch, SR groups participate in the on-orbit evaluation of transponders in communication satellites and camera systems in remote sensing satellites. SR groups play a major role in identification, evaluation and inculcating quality practices in work centres involved in the fabrication of mechanical, electronics and propulsion systems required for Indian Space Research Organization's (ISRO's) launch vehicle and spacecraft projects. Also the reliability analysis activities like prediction, assessment and demonstration as well as de-rating analysis, Failure Mode Effects and Criticality Analysis (FMECA) and worst-case analysis are carried out by SR groups during various stages of project realisation. These activities provide the basis for project management to take appropriate techno-managerial decisions to ensure that the required reliability goals are met. Extensive test facilities catering to the needs of the space program has been set up. A system for consolidating the experience and expertise gained for issue of standards called product assurance specifications to be used in all ISRO centres has also been established. 相似文献
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根据增雨防雹火箭系统总体提出的技术指标,利用常用的电路设计技术,开发研制了增雨防雹火箭发射控制装置,经高低温和运输试验,以及实际应用证明,该系统安全可靠,准确快速,并且便于携带,易于维修。 相似文献