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1.
Valerie Neal   《Space Policy》2004,20(3):157
During the space shuttle era, policy makers have repeatedly wrestled with the issue of fleet size. The number of shuttles had both practical and symbolic significance, reflecting the robustness of the space transportation system and US preeminence in space. In debating how many shuttles were needed, NASA and other government entities weighed various arguments to determine the optimum number of vehicles for human spaceflight. Deliberations and decisions about shuttle fleet size reflected changing policy priorities and attitudes about the role of the shuttle. That history frames issues that may arise again in planning for new space transportation vehicles beyond the shuttle.  相似文献   

2.
Recent US space policy proposes the use of space transportation ‘vouchers’ for space science payloads. Vouchers could affect the pace of space science and developments in space transportation both in the USA and internationally. This article focuses on the economic costs and benefits of vouchers, and strategies for effective programme design.  相似文献   

3.
We are on the verge of a new era of commercial and industrial expansion in space that will have a major impact on America's future and on the future of the world. It is a turning point that will set the US national agenda in space well into the 21st century, and, as such, will have an important impact on space-related activities worldwide. The USA is now gearing up to face the challenges of this new era. James Beggs, NASA Administrator, describes the US space station programme.  相似文献   

4.
The year 2004 could be seen as the turning point for the realignment of international space cooperation for the 21st century. At the very core of this readjustment, the US space exploration initiative strives to define a new scheme for such a broad array of aspects as international scientific cooperation, the role of the space industry and the organizational framework for international space applications. This paper argues that the success of this new outline of international space cooperation depends on several conditions. First, the US initiative needs to demonstrate its long-term continuity and reliability for international partners, which will depend to no small degree on the future of the ISS and its utilization for international research. Second, international cooperation between industrial partners will continue to need political frameworks and depend on a balanced handling of know-how partnerships. Third, cooperation in space applications will need a truly international structure to further its global acceptance and outreach.  相似文献   

5.
This article discusses the crisis facing the USA in the formulation of its space transportation policy, within the context of its overall national space policy. The author examines developments in international space transportation from 1982 to 1992, and the failure of US policies to meet foreign commercial competition in space launches. Two goals have emerged from the US policy debate: to achieve assured access to space, and to reduce the costs of sending payloads to orbit. Both goals need to be faced within the context of a wider commitment by government and private industry to space investment.  相似文献   

6.
美国空间对抗装备的新进展   总被引:2,自引:0,他引:2  
简要介绍了美国空间对抗装备的最新发展情况.着重分析了美国近期重点关注的空间武器.指出天基空间态势感知装备、天基反卫反导武器和激光反卫星武器将是美国空间对抗装备的发展方向.  相似文献   

7.
Below is a summary of what was to be the first in a series of reports produced by the Office of Technology Assessment (now defunct) on policy for the USA's future space transportation technology and industrial base. It examines the Clinton Administration's 1994 National Space Transportation Policy and supporting implementation plans and raises and analyses such issues as conflicts and redundancies within NASA and DoD space transportation development programs; competition and cooperation with foreign launch vehicle and component providers; US government limits on the conversion of long-range missiles to space launchers in the face of Russian activity in this area; and the effectiveness of Administration efforts to include the private sector in space transportation decision making. Some issues not covered in the Policy are also discussed.  相似文献   

8.
Rather than aiming at overall preemenence in space, as in the past, it is important for the USA now to specify goals and objectives for its space programme. In the space transportation market, the USA faces long-term competition. Planned properly, the Space Shuttle, Space Station and transfer stages can be used as a unique transport system, forcing other suppliers to compete on US terms. Such a total transport service system could also include ELV support. In entering into international space agreements, the government must take into account the objective of maintaining the competitiveness of the US commercial sector.  相似文献   

9.
The European response to the US invitation to participate in the space station programme will determine the long-term future of the European space industry. The European Space Agency is charged with replying to the invitation, which will be one of the items on the agenda of the first ministerial meeting of the Council in early 1985. All going well, by the end of 1985 Europe will have developed a new long-term strategy towards space which will include substantial collaboration with the USA.  相似文献   

10.
The article explores the way so-called legal space risks are managed in US commercial space transportation. Risk management in the space transportation field is a highly regulated process, thus allowing practically no possibility of deviating from the system stemming from such regulation. Such a system arises from the legislation, basically the Commercial Space Launch Act, and the agreements. This risk-management structure is characterized by the transfer of risks from the space launch provider to both the user and the government and by the ensuing launcher's limitation of liability.  相似文献   

11.
《Space Policy》1987,3(1):13-16
This article is a summary of a report on space transportation policy by the US Congress's Congressional Budget Office published in October 1986. The report was written as a contribution to the discussions in the USA on national space policy after the Challenger accident.  相似文献   

12.
空间科学不仅能够推动我国在基础科学研究领域取得重大科学突破,还能够有效牵引、带动航天高新技术的发展。中国科学院空间科学战略性先导科技专项是"十二五"时期我国空间科学领域最重要的系统性进展,开启了中国空间科学发展的新篇章。"十三五"时期,我国将继续研制、发射一系列新的空间科学卫星,这对航天运输系统提出了新的技术发展需求。发展空间科学必将推动我国的航天强国、世界科技强国建设进程。  相似文献   

13.
China's opaque politics present particular difficulties for US space policy. Heavily invested in and reliant on space, the US will closely monitor China's burgeoning space program. New space powers, and the increasing use of space generally will further create significant challenges, most particularly to the reliance of states on space for national security. In order to maintain its space capabilities, the US will have to decide between securing this via multilateral and co-operative uses of space, or through trying to maintain a level of dominance over other space actors. While very gradually shifting away from the latter position, Washington's policy choices are complicated by the lack of a clear Chinese space strategy. While the Chinese space program, and its wider intentions, are opaque, tenure of a more cooperative approach course might prove fragile.  相似文献   

14.
After years of international stalemate talks on space arms control were finally initiated in Geneva in 2009. The position of the new US administration, however, is still waiting to be defined. This article assesses the advantages and disadvantages of different arms control proposals by looking at them from the perspectives of interdependence theory, neoliberal institutionalism and neo-realism, respectively. They all come to similar conclusions as far as conventional military power and security are concerned: any formal or informal ban on debris-producing activities in space would be highly advantageous to the USA and its allies. When the analysis also takes into account US missile defense policy, however, a neo-realist perspective shows rather mixed results.  相似文献   

15.
《Space Policy》1988,4(4):273-280
This article is an edited summary of a report on the future work of the US National Aeronautics and Space Administration published in May 1988 by the US Congress's Congressional Budget Office. It considers whether NASA will be able to undertake new and ambitious initiatives in the coming decades, or instead hold its spending to current real levels, thus limiting US international leadership in space activities.  相似文献   

16.
Confused and short-sighted decisions dominated by political expediency have been made about US space policy in the past 30 years. Overly large and ambitious systems have been chosen, resulting in today's crisis in space transportation. The history of commercial aircraft development offers an alternative example of producing in a range of sizes and capabilities for a wide variety of users, and shows that the space transport industry could benefit from applying the decision-making processes used in private enterprise. The authors examine strategies for privatization of space transportation and conclude that policy support for the commercial launch industry must be continued. NASA must be reoriented towards its basic research function, and more government services should be bought from the private sector.  相似文献   

17.
Linda Billings   《Space Policy》2006,22(4):249-255
The US civilian space program is focused on planning for a new round of human missions beyond Earth orbit, to realize a ‘vision’ for exploration articulated by President George W. Bush. It is important to examine this ‘vision’ in the broader context of the global enterprise of 21st century space exploration. How will extending a human presence into the Solar System affect terrestrial society and culture? What legal, ethical and other value systems should govern human activities in space? This paper will describe the current environment for space policy making and possible frameworks for future space law, ethics and culture. It also proposes establishment of a World Space Conference to aid deliberations on the above.  相似文献   

18.
US space exploration policy deliberations tend not to include citizens who lack direct, vested financial interests in the space enterprise. Could expanding the circle of US space policy development players to involve citizens more aptly serve space exploration and the interests of American democratic society in the 21st century? I evaluate the merits and feasibility of citizen participation, drawing upon democratic theory and scholarship analyzing public participation in techno-scientific matters, previous experiences of public involvement in space exploration policy formation, and reflections on my professional experiences in space policy development. I argue that public engagement will enrich the debate surrounding the US future in space and may point toward a program American citizens will support as a meaningful future in the cosmos. I suggest three guiding principles and outline four mechanisms that, if embraced by US space policy makers, could foster meaningful public participation in informing the US space exploration agenda.  相似文献   

19.
Despite its scientific successes, NASA has over the past two decades lost its way, spending billions of dollars on transportation systems that have at bottom been failures. President Obama's cancellation of the costly and unwieldy Constellation program provides an opportunity for genuine reform of the agency and the US space program, through harnessing the innovatory and cost-effective power of commercial entrepreneurs. Examples of the kinds of project they might undertake – including solar power satellites, ‘space taxis’ and a space elevator – are discussed.  相似文献   

20.
《Acta Astronautica》1986,13(9):527-536
The planned construction of a permanently manned space station in low earth orbit has reopened the discussion about the establishment of a manned lunar base within the next 25 years for exploration of the Moon and space. Several studies demonstrate that a lunar base very modest in size may cost $50 to 90 billion spread over 25 years which would fit into the expected NASA budget for this period. Having these cost in mind the authors present a concept having a greater effectiveness based on the following operational characteristics: (1) The development of a low cost heavy-lift launch vehicle for cargo transportation and propellant supply reduces the specific transportation cost by one order of magnitude compared to the existing Space Shuttle system. (2) Orbital transfer vehicles with LOX/LH2 technology should be preferred over advanced propulsion systems because of proved technology and cost reduction by utilization of lunar produced LOX. (3) The evolution of the lunar base towards a lunar colony and manufacturing facility could only be initiated by a powerful transportation system allowing for cost-effective space construction projects and manned spaceflight to other planets.The lunar base program of this paper is based on a schedule considering a 8 years development, 5 years lunar base assembly and 20 years operational phase during which the lunar crew will increase from 60 to 180 people. Launch rates will be 10 shuttle launches and 10 HLLV launches p.a. at the average. Development costs of the transportation and lunar base system will amount to $29 billion. Adding hardware and operational costs for lunar base assembly results in the acquisition cost of $49 billion. Total life cycle costs are estimated to be in the order of $101 billion considering a 20 years operational phase which will cost $2.6 billion p.a. at the average. For the 2508 man-years spent in lunosphere the relative cost will be $40.2 million per man-year of which space transportation will cost $25.0 million per man-year.  相似文献   

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