A joint European strategy for space

This paper describes the background to the creation of the first coherent space strategy for Europe and explains why such a co-operative effort is necessary—in order to achieve strategic economic and security goals for the benefit of Europe's citizens. It discusses the three major objectives of the strategy and looks at the differing roles that will be played by ESA and the European Commission in its implementation, as well as at the developing relationship between the two bodies.     

Return to the Moon: A sustainable strategy

On 14 January 2004 President George Bush announced his vision for space exploration, to include a human return to the Moon. He argued that, with a moderate increase in NASA's annual expenditure, such a return was possible. This paper is an exploration of how the President's space initiative can be realised on an international co-operative basis along similar lines to those already existing with the international space station (ISS). By abandoning the concept of a lunar landing as the major goal of a lunar programme, the initiative is made feasible. The three-stage plan here presented meshes with the currently evolving plans for the US space initiative to provide a realistic, affordable and sustainable strategy for manned lunar exploration. It represents a significant opportunity for the USA to unite and lead the world on this grand, civilisation defining adventure.     

A Ticket pricing strategy for an oligopolistic space tourism market

It is important for any new launch system to develop a successful pricing strategy and to optimize launch system parameters to receive a high economic profit. A question arises, what will happen when an existing suborbital flight market (the first likely to be established in space) is interfered with by a new established orbital flight market for space tourism. There is a risk that the suborbital space tourism market could be almost instantly displaced when a product capable of reaching orbit was introduced. This is best discussed using the following three cases whose results are presented in this paper. Case A presents a ticket pricing strategy for a suborbital and orbital vehicle if the two vehicles do not compete in the same market. Case B shows the necessary ticket pricing strategy for a suborbital vehicle if there is competition from an orbital flight operator. However, the suborbital vehicle would not be able to keep up with a drop in ticket prices due to its obsolete characteristics. Thus, the suborbital vehicle would be forced to stop operation in the year when flight costs became higher than flight receipts as shown in case C.     

A new cooperative strategy for space in the twenty-first century

The context within which the major government space programmes of the world are planned and obtain political approval has changed dramatically with the end of the Cold War. International economic competition has become a central issue in international affairs. Economic and political constraints require that space agencies adapt the ambitious plans they put forward in the 1980s to the realities of this decade and beyond. This paper argues that in this changed context, enhanced international space cooperation can make important contributions to advancing the core interests of nations and firms, and that in some situations, increased and more intimate cooperation may be the only way to achieve ambitious space goals. The paper contains a series of policy-oriented findings and recommendations that together comprise a ‘new cooperative strategy’ for space.     

A sulfur-based survival strategy for putative phototrophic life in the venusian atmosphere

Several observations indicate that the cloud deck of the venusian atmosphere may provide a plausible refuge for microbial life. Having originated in a hot proto-ocean or been brought in by meteorites from Earth (or Mars), early life on Venus could have adapted to a dry, acidic atmospheric niche as the warming planet lost its oceans. The greatest obstacle for the survival of any organism in this niche may be high doses of ultraviolet (UV) radiation. Here we make the argument that such an organism may utilize sulfur allotropes present in the venusian atmosphere, particularly S(8), as a UV sunscreen, as an energy-converting pigment, or as a means for converting UV light to lower frequencies that can be used for photosynthesis. Thus, life could exist today in the clouds of Venus.     

A novel SETI strategy targeting the solar focal regions of the most nearby stars

Many hypotheses have been raised to explain the famous Fermi paradox. One of them is that self-replicating probes could have explored the whole Galaxy, including our Solar System, and that they are still to be detected. In this scenario, it is proposed here that probes from neighboring stellar systems could use the stars they orbit as gravitational lenses to communicate efficiently with each other. Under this hypothesis, a novel SETI approach would be to monitor the solar focal regions of the most nearby stars to search for communication devices. The envisioned devices are probably not detectable by imagery or stellar occultation, but an intensive multi-spectral monitoring campaign could possibly detect some communication leakages. Another and more direct option would be to message the focal regions of nearby stars in an attempt to initiate a reaction.     

When inspiration fails to inspire: A change of strategy for the US space program

A pressing issue facing the US space program is the projected shortfall in the skilled aerospace workforce, as the number of students in space-related fields wanes. This has prompted many to emphasize the rhetoric of inspiration that prevailed during the Cold War, at the expense of concrete arguments for space that are thought to be lackluster and insufficient. This essay argues that the logic of inspiration fails to consider the changed context and attitudes of this younger public. Instead, such an approach proves counterproductive in attracting generations compelled by a host of ideas, some incompatible with the rhetoric of competition and prestige that prevailed before. Arguments that draw attention to the pragmatic elements of space, and that successfully align space with the notions that make sense now, may in turn prove to be the solution to draw the best and the brightest to the space program.     

新抵消战略与导弹攻防

叙述了美国新抵消战略与美国亚太再平衡的呼应关系,追溯了三次抵消战略的来龙去脉与启示,围绕着美重返亚太、第三次的新抵消战略和导弹攻防问题,梳理了2016年美国国防部给其国会的中国军力报告所分析出的中国导弹攻击能力,从美国权威智库的2025美国重返亚太预测报告中概括了现在的美国导弹防御能力、差距与对策建议,通过导弹攻防力量对比,剖析了美导弹攻防新抵消战略的新质特点。     

European thoughts on the new US defence strategy: A major repositioning in a difficult budgetary context

The USA adopted a new defence strategy in 2012 which responds to the changing geopolitical landscape and straightened economic circumstances. The emphasis is on leaner, more flexible and diversified operations, while priority areas have shifted from Europe to the Asia-Pacific (in acknowledgement of China's growing military might) and the Middle East. This will have consequences for Europe, which is now expected to take a greater share of the strategic burden. The major developments in the strategy – such as eschewing the pursuit of lengthy engagements on more than one front, and using the military to complement diplomatic and economic initiatives – are discussed. Europe is urged to respond by maintaining its national strategic and industrial autonomy, including in access to space and missile defence.     

Multinational and ethical issues in manned-space strategy

This paper discusses alternative approaches to communication and dispute resolution pertinent to a variety of perspectives on manned-space strategy. Since contemporary astronaut activities are both national and multinational, and increasingly involve different sectors, cultures, disciplines and specialists, there is reason to reflect on the potential use of astronauts in advisory roles to entities and groups of individuals.     

关于航天实施标准战略的思考

针对国内外标准化发展的态势和我们面临的巨大挑战,论述了在当今不断变化的形势下,航天实施标准战略的重要性,并结合工作实际,提出了构建航天科技集团公司标准战略的总体思路、实施策略及措施。     

网络攻击方式及防御策略分析研究

通过对网络安全脆弱性的分析,研究了网络攻击的方式和过程,分析了网络安全防御的特点、策略和过程。     

美国空间对抗新思维与装备技术发展新动向

美国2011年出台《国家安全空间战略》,针对空间对抗问题,首次提出多层空间威慑措施,首次从战略层面指明美国未来空间对抗装备和技术的发展方向,体现出美国空间对抗的新思维。对照美国空间对抗的新思维和空间对抗装备技术发展的新动向,可以看出,这种新思维已在落实中。新形势下,其他国家争取有限制天权面临风险增加、难度增大等新挑战。     

An alternative strategy process for government space activities

This article is a revised and updated version of a paper presented at the 49th International Astronautical Congress, held in Melbourne, Australia from September 28 to October 2, 1998. It presents a methodical approach to the future planning of government space activities. Rather than generating detailed programme plans that are hard to implement in a dynamic environment, the method described herein is rather modelling the priorities of different project alternatives. This is less detailed as the plans that usually result from the classic space planning approach, yet is highly usable as a roadmap for implementation. This approach enables a dynamic planning with inherent learning cycles that can easily be adapted to the dynamic changes which are plaguing today’s space policies.     

实施标准化战略 提高航天产品批生产水平

阐述标准化在航天企业发展中的地位与作用,介绍航天产品批生产中的几项标准化工作,并结合航天企业实际,提出实施标准化战略中应考虑的几个问题.     

Some comments on the ESA/EU space strategy

Not only have the European Space Agency (ESA) and the European Union Commission succeeded in producing a joint space strategy within the time set for it, they have created a substantial and worthwhile document which recognises the importance of space for Europe and acknowledges that ESA—not national agencies—is the right body for the conduct of Europe's space efforts. Nevertheless, the strategy's lack of any government financial commitment is a worry— Public–Private Partnerships will never be enough—as is its failure to include any thought for the long term, and in particular manned flight. This critique of the strategy argues for more government spending on space and for greater long-term vision.     

Creating a European internal security strategy involving space applications

Space applications are used for countering a wide variety of external security threats but their use for the provision of internal security (for non-military threats like terrorism, organised crime or illegal immigration) is still largely neglected. Several steps have recently been taken to consider space applications for counter-terrorism and other internal security threats. In the context of the general call for a specific European security research programme, the European Union’s Framework Programme for Research and Technological Development (FP 7) is conducting several projects using space applications for fighting internal security threats. However, current attempts remain scattered across national and European initiatives, policy fields and pillars, institutional actors and actors involved in various projects. There is thus a strong need for a more integrated approach at the EU-level through a European Internal Security Strategy complementing the existing European Security Strategy. The US has been looking at the provision of homeland security for some time. A revision of existing structures in Europe should thus not neglect the dimension of transatlantic cooperation in this policy area.     

A strategy to study regional hydrology and terrestrial ecosystem processes using satellite remote sensing, ground-based data and computer modeling

This paper describes a multidisciplinary research project which seeks to characterize the terrestrial water cycle and use this characterization to derive simulations of carbon dioxide and methane flux. The water cycle work links interpolated climate fields, macrohydrologic models and Scanning Multichannel Microwave Radiometer datasets. The aim of the analysis is to use output from calibrated water balance models to develop relationships with SMMR datasets. SMMR estimates of surface hydrology can then be evaluated. Both modeled and SMMR datasets will be tested as inputs to regional biogeochemical models. All determinations will be made under climatically-averaged conditions and for 1979–1985, the years for which SMMR data is available.     

Optimal diving maneuver strategy considering guidance accuracy for hypersonic vehicle

An optimal maneuver strategy considering terminal guidance accuracy for hypersonic vehicle in dive phase is investigated in this paper. First, it derives the complete three-dimensional nonlinear coupled motion equation without any approximations based on diving relative motion relationship directly, and converts it into linear decoupled state space equation with the same relative degree by feedback linearization. Second, the diving guidance law is designed based on the decoupled equation to meet the terminal impact point and falling angle constraints. In order to further improve the interception capability, it constructs maneuver control model through adding maneuver control item to the guidance law. Then, an integrated performance index consisting of maximum line-of-sight angle rate and minimum energy consumption is designed, and optimal control is employed to obtain optimal maneuver strategy when the encounter time is determined and undetermined, respectively. Furthermore, the performance index and suboptimal strategy are reconstructed to deal with the control capability constraint and the serous influence on terminal guidance accuracy caused by maneuvering flight. Finally, the approach is tested using the Common Aero Vehicle-H model. Simulation results demonstrate that the proposed strategy can achieve high precision guidance and effective maneuver at the same time, and the indices are also optimized.