The first International Conference on Environment and Human Health Systems Engineering was held on July 8,2017 in Northwestern Polytechnical University（NPU）,Xi’an.This conference was jointly held by the School of Life Sciences of NPU,the Office of International Cooperation of NPU and the China Aerospace Academy of Systems Science and Engineering（CAASSE）.
In this paper, we examine the interrelation between innovation and commercial marketing using the DFH-4 series bus satellite as an example which customers are familiar with. Strategies in evolving satellite buses and key subsystem technologies without compromising on advanced innovations, favorable heritage and thorough verification are also discussed. Market development experiences with the DFH-4 series bus satellite are summarized and market recognition is reflected from the space insurance perspective.
At 23：18 Beijing time on January 5, a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center, sending a communication technology test satellite into its preset orbit. This successful launch was a good start for China＇s launch missions in 2017.
China＇s aerospace industry is facing a major task of increasing the reform of aerospace management sys- tem and speeding up civil-military integration, which leads to an urgent demand for new aerospace think tank products. Thankfully. with ＂information space＂ as the carrier, the ＂systems science＂ as the guidance, and QIAN Xuesen＇s ＂meta- synthetic wisdom system＂ as the core, QIAN Xuesen think tank provides the decision support for China to develop an aerospace knowledge economy and to continuously enhance the ＂space soft power＂. In this paper, the framework of the meta-synthetic wisdom system guided by systems science is presented, the relationship between basic ideas of QIAN Xuesen think tank and meta-synthetic wisdom system is explained and the construction items of aerospace hall of the workshop for meta-synthetic engineering （aerospace HWMSE） are analyzed.
The Tianzhou I cargo spacecraft was launched atop a LM-7 launch vehicle from the Hainan Wenchang Spacecraft Launch Site at 19：41 Beijing time on April 20. About 596 seconds after the liftoff, the cargo spacecraft separated from the carrier rocket and entered its preset orbit, the launch mission was declared a success.
The first satellite jointly developed by China and France,China-France Oceanography Satellite（CFOSAT）,will be launched on a LM carrier rocket in the second half of 2018 announced at a press conference jointly held by the China National Space Administration（CNSA）and French embassy in Beijing.The satellite is being tested at a Beijingbased AIT center of CNSA.CFOSAT is an oceanic satellite supported under a joint project of CNSA and the National Center for Space Studies（CNES）of France.
The grazing incidence focusing X-ray pulsar telescope（iFXPT）, as the main payload of the X-ray Pulsar Navigation Test Satellite（XPNAV-1）, will have great significance on China＇s space scientific exploration and X-ray pulsar navigation. With PSR B0531＋21（Crab Pulsar） as the observation target, the pulsar profile has been recovered based on the data obtained by iFXPT, realizing the main objective of ＂observing＂ PSR B0531＋21 for the first time in China. This payload mainly consists of the Wolter-I X-ray optics, silicon drift detector, magnetic deflector, electronics, high-energy particle shield and high-stability structures. Currently, the iFXPT, with its good in-orbit performance, has obtained a considerable observation data. The effective area, sensitivity and energy response have been calibrated both on ground and in-orbit, demonstrating a high degree of consistency. Meanwhile, the in-orbit observation data and information for pulsar navigation has also been analyzed simultaneously. As a result, the feasibility of the exploration scheme and the performance of the telescope have been fully validated.
The GF-3 satellite was launched on August 10, 2016 from the Taiyuan Satellite Launch Center and was put into operation at the end of January, 2017. It has acquired nearly 100 thousand C-band multi-polarization ocean and land SAR images, providing data support for many departments covering resource survey, typhoon early warning, disaster assessment, crop yield estimation and polar investigation.
The Long March 5 （LM-5） launch vehicle is China＇s new generation heavy-lift rocket with the largest payload capacity, representing the highest standard of China＇s current launchers. It took 10 years to develop the LM-5 launch vehicle. On November 3, 2016, the LM-5 carrier rocket blasted off from the Venchang satellite launch center on Hainan Island, achieving a successful maiden flight. During the development of the LM-5 rocket, the engineering team accumulated abundant experience on developing heavy-lift cryogenic rockets and established a thorough research and development system for new generation launch vehicles, which significantly raised the ability for launcher R＆D.
Vice Administrator of the China National Space Administration （CNSA） WU Yanhua and Chairman of National Authority of Remote Sensing and Space Sciences （NARSS） Dr. Ahmed held a talk in Beijing and signed omcially the agree- ment on establishing a joint AIT center between CNSA and NARSS. The center will be established and operate based on the Egyptian satellite AIT located in Cairo.
China launched the SJ-13 （China- Sat-16） satellite at 7：04 p.m. on April 12 on a LM-3B carrier rocket from the Xichang Satellite Launch Center. The satellite was developed by the China Academy of Space Technology （CAST） with a design lifetime of 15 years. SJ- 13, China＇s first high-throughput communications satellite that applies electric propulsion technology, is the first satellite based on the DFH-4S platform and will conduct high speed laser communications tests for the first time in China.
Upper stage is an indispensable vehicle in the space transportation system. For its role in multi-satellite transportation area in China, the development of the Yuanzheng 3 upper stage was approved. The article introduces in detail the Yuanzheng 3 upper stage development requirements, task definition and systems as well as main features and performance including payload capacity and insertion accuracy for typical orbits, interfaces with satellites. The article also presents the development cycle of Yuan7heng 3 upper stage, which is divided into 3 stages including concept demon- stration stage, prototype stage and flight proof stage. The Yuanzheng 3 upper stage, which will make its maiden flight in 2018, is capable of restarting more than 20 times, and operating for more than 48 hours. It is equivalent to mainstream upper stages in the world in terms of performance, such as restart times, in-orbit operation time, independent digital control system, and adaptable behavior for various tasks. Technologies tackled and accumulated in the development of the Yuanzheng 3 upper stage will lay a solid foundation for the development of future space transportation vehicles.
The Long March 2 F（LM-2F） launch vehicle, the only launch vehicle designed for manned space flight in China, successfully launched the Tiangong 2 space laboratory and the Shenzhou 11 manned spaceship into orbits in 2016 respectively. In this study, it introduces the technological improvements for enhancing the reliability of the LM-2F launch vehicle in the aspects of general technology, control system, manufacture and ground support system. The LM-2F launch vehicle will continue to provide more contributions to the Chinese Space Station Project with its high reliability and 100% success rate.
Two problems were found in recent appl evaluate the readiness level of a given technology in a diversity （different types） of technologies involved in cations of TRLs in aerospace projects. One is how to accurately project using the TRL scale. The other is how to deal with the an aerospace project. To solve these problems, a technology readiness assessment （TRA） method based on three maturity characteristics is established, and this method is adapted according to the features of different types of technologies. The proposed method has been successfully applied to aerospace projects and enables great effectiveness and accuracy in assessing new technologies.
The Quantum Science Experiment Satellite（QUSES） is the first satellite deployed successfully in nearEarth space for quantum scientific experiments in the world, in which experimental study on the fundamental questions of quantum mechanics can be done under the condition of a spatial scale about 500-2000 km. QUSES is performing a Quantum Key Distribution（QKD） experiment from satellite to ground station for testing of the global quantum secure communication network, and performing a Quantum Entanglement Distribution（QED） and Quantum Teleportation（QT） experiments with the purpose of testing the completeness of quantum mechanics theory at a sufficient spatial scale. The payload of QUSES is com posed of a Quantum Key Transceiver（QKT）, a Quantum Entanglement Transmitter（QET）, a Quantum Entangled-photon Source（QES）, a Quantum Experiment Control Processor（QCP） and a Coherent laser Communication Terminator（CCT）. This paper introduces the technical scheme of QUSES, including the requirement analysis, composi tion, technical innovation, on-orbit status and prospect of development for the future.
The GF-3 satellite, the first C band and multi-polarization Synthetic Aperture Radar（SAR） satellite in China, achieved breakthroughs in a number of key technologies such as multi-polarization and the design of a multiimaging mode, a multi-polarization phased array SAR antenna, and in internal calibration technology. The satellite technology adopted the principle of ＂Demand Pulls, Technology Pushes＂, creating a series of innovation firsts, reaching or surpassing the technical specifications of an international level.
1 HYDROGEN MASER HELPS TO REDUCE DEPENDENCE ON GROUND At 07：13 Beijing time on September 30, 2015, a LM-3B rocket successfully launched the fourth next-generation BeiDou navigation satellite, which carried a hydrogen maser （H maser） for the first time. The H maser has started operation after onorbit commissioning with all performance indexes normal.
In this paper, to meet the environmental requirements for the lunar surface, we outline the design of an intelligent shape memory polymer（SMP） capsule structure of lightweight using a flexible composite skin. Key breakthrough technology for manufacturing the high-performance multilayer composite is utilized to realize the requirements for folding and compressing during launching, and unfolding on the lunar surface, taking into account the current opposing requirements for launching and the space transportation mission of large equipment. Based upon the reduced constraints, better expansibility and easy assembly, this lunar base is suited to the initial and interim phases of a moon construction, and provides a national solution in the construction of lunar base on moon.
The first phase large inertia quick mobility and stability test on a large three-axis air-bearing table was recently completed. This is another complete satellite-level full physical simulation test after the FY-4 satellite picture navigation and registration simulation test.
China＇s new-generation launch vehicle LM-5 successfully completed its maiden launch in November 2016. Among the new technologies applied in the launch vehicle, four types of liquid rocket engines attracted extensive attention. These engines feature advanced concepts and technologies such as a staged combustion cycle and expander cycle. The engines are the results of hard effort of more than ten years, which is also an epitome of the development history of China＇s aerospace industry. This paper gives a brief introduction to the technological schemes, main parameters, development process and application of the four types of engines that powered the new-generation launch vehicle. Finally, proposals for new liquid propulsion technology development in the future in China are presented.