Wind-tunnel free-flight investigation of a model of a forward-swept-wing fighter configuration

A wind-tunnel free-flight investigation was conducted to study the dynamic stability characteristics of a model of a forward-swept-wing fighter-airplane configuration at high angles of attack. Various other wind-tunnel techniques employed in the study included static- and dynamic- (forced-oscillation) force tests, free-to-roll tests, and flow-visualization tests. A unique facet of the study was the extreme level of static pitch instability (in excess of negative 32-percent static margin) inherent in the airframe design which precluded free-flight testing without stability augmentation in pitch. Results are presented which emphasize the high-angle-of-attack aerodynamics and the vehicle-component contributions to these characteristics. The effects of these aerodynamic characteristics on the high-angle-of-attack flying qualities of the configuration are discussed in terms of results of the wind-tunnel free-flight tests

An Integrated Assessment of Water Markets: Australia, Chile, China, South Africa and the USA

The paper provides an integrated framework to assess water markets in terms of their institutional underpinnings and the three 'pillars' of integrated water resource management: economic efficiency, equity and environmental sustainability. This framework can be used: (1) to benchmark different water markets; (2) to track performance over time; and (3) to identify ways in which water markets might be adjusted by informed policy makers to achieve desired goals. The framework is used to identify strengths and limitations of water markets in: (1) Australia's Murray-Darling Basin; (2) Chile (in particular the Limarí Valley); (3) China (in particular, the North); (4) South Africa; and (5) the western United States. It identifies what water markets are currently able to contribute to integrated water resource management, what criteria underpin these markets, and which components of their performance may require further development

Markets - Water Markets: Australia’s Murray-Darling Basin and the US Southwest

Worldwide supplies of fresh water are increasingly scarce relative to demand. This problem is likely to be exacerbated with climate change. In this paper, we examine water markets in both Australia’s Murray Darling Basin and the western US and their prospects for addressing water scarcity. The two regions share a number of important similarities including: climate variability that requires investment in reservoirs to make water available in low-rainfall periods; the need for internal and cross-border (state) water management; an historical major allocation of water to irrigators; increasing competition among different uses (agricultural, environmental and recreational in situ uses, urban demand); and the potential for water trading to more smoothly and quickly allocate water across these competing uses. A comparison of the two regions provides important insights about how economic factors can encourage more efficient water allocation, market structure and government regulation.

An Integrated Assessment of Water Markets: Australia, Chile, China, South Africa and the USA

The paper provides an integrated framework to assess water markets in terms of their institutional underpinnings and the three ‘pillars’ of integrated water resource management: economic efficiency, equity and environmental sustainability. This framework can be used: (1) to benchmark different water markets; (2) to track performance over time; and (3) to identify ways in which water markets might be adjusted by informed policy makers to achieve desired goals. The framework is used to identify strengths and limitations of water markets in: (1) Australia’s Murray-Darling Basin; (2) Chile (in particular the Limarí Valley); (3) China (in particular, the North); (4) South Africa; and (5) the western United States. It identifies what water markets are currently able to contribute to integrated water resource management, what criteria underpin these markets, and which components of their performance may require further development.

Assessment of the potential costs and benefits of water trading across northern Australia<br />

SummaryThis report is the final of three reports and part of a two year project entitled Establishing water markets in northern Australia: a study to assess feasibility and consequences of market-based mechanisms of water delivery undertaken through the Australian National University&rsquo;s Crawford School of Economics and Government. The Tropical Rivers and Coastal Knowledge (TRaCK) hub funded this project under Theme 6.1 &ldquo;Sustainable Enterprises&rdquo;. This research is also being done in collaboration with the North Australian Indigenous Land and Sea Management Alliance (NAILSMA).This third report provides an assessment of the potential costs and benefits of water markets across northern Australia with consideration of efficiency, equity and effectiveness criteria. The region under focus is the tropical belt of northern Australia which comprises the jurisdictions of Queensland, Northern Territory and Western Australia, (with attention on the Gulf, Timor and North East drainage divisions).Water trading is at a formative stage in northern Australia, with few (if any) recorded trades at the time of writing. Markets have been effective in southern Australia in providing flexibility to irrigators and supporting productivity through reallocation during drought. Markets under the National Water Initiative (NWI) are seen as an effective tool to optimise economic, social and ecological values associated with water.There are preconditions for a water market to be effective. Important is for there to be low to medium transactions costs. A transaction cost is the costs involved in executing a trade that are above and beyond the actual price paid for the water (they can include travel time, fees, title searches and other costs). The potential for high and increased transactions costs is significant across northern Australia. A key reason for this is uncertainty over Indigenous rights and interests to water, which if not resolved could impose constraints on water markets. This suggests that there must be greater certainty around Indigenous involvement in water markets.There are environmental costs associated with water markets. Experience in the Murray Darling Basin highlights there have been environmental impacts from water trading (though it is&nbsp; acknowledged that it is difficult to separate these impacts from the effects of drought and increased development). These impacts include increased salinity, and effects from the physical&nbsp; change in the timing and location of water use. One outcome of the development of water markets in southern Australia was the activation of sleeper and dozer entitlements- this meant more water was being used. Across northern Australia most rivers are not perennial, there is a reliance on groundwater and the expansion of storages is constrained There is the potential in northern Australia for environmental impacts from trade. These impacts include: increased salinity&nbsp; in-stream; water logging from more on-farm use; saltwater intrusion because of reduced flows; and&nbsp; during the dry increased nutrient loads could threaten the health of rivers. These issues can be addressed through management efforts. For example, in the Ord, water managers have increased dry&nbsp; season flows to disperse nutrients from agricultural activity.Efficiency is key aim of water markets. Economic efficiency arises when all the gains from trade&nbsp; have been exhausted and the costs imposed on others from water use have been fully accounted for in the decision making of water users. Any assessment of efficiency of water markets, however, requires more than simply a comparison of quantified private costs and benefits. This is because, typically, water markets have been implemented only for consumptive uses of water and the effects of water use on downstream users and the environment have typically been ignored or not fully considered. Any assessment of efficiency in the north must seek to integrate customary or ecological values, but it is acknowledged that this is complex as these values are intangible and difficult to quantify.Issues of equity are important in the transition to water access rights. In the north, equity should be given increased prominence because there is a significant Indigenous population in the region who are subject to chronic socioeconomic disadvantage. In allocating property rights to water there will need to be consideration of Indigenous Australians. Including Indigenous people in&nbsp; water markets through a structure that is appropriate will offer challenges to policy makers. Quantifying the amounts of water to be provided for consumptive purposes and non consumptive purposes (such as spiritual values) is also complex. There will need to be considerable Indigenous community consultation to ensure principles of equity are upheld. Water planning should provide important parameters to ensure Indigenous customary aspirations are not threatened by water trading. There will need to be consideration of surface and groundwater connectivity, and the effect of extraction on groundwater dependent ecosystems, which are of high importance to Indigenous people in the region. These parameters should be reflected in trading rules. Ongoing Indigenous collaboration and engagement in water allocation is essential- such efforts should be underpinned by capacity development.The concept of water markets can be politically contentious. In our first work for this project, community opposition was identified as a key barrier to the development of water markets by research participants. However, it is important to emphasise that a slender majority of all respondents in our second study agreed that water markets would be useful in their region. Indigenous respondents were more likely to agree that water markets would be useful. But respondents imposed conditions on how markets should operate. Respondents placed a high value on environmental and cultural assets, and Indigenous involvement in water markets was important. It was suggested by participants that there is required more community awareness on water reform and on water markets. There is little awareness that markets can support the optimisation of environmental, economic and social values to water (which is an overarching objective of the NWI).Non market approaches may be more appropriate in some areas than markets. Markets are efficient in optimising the allocation of water where scarcity and competition exist. Markets may by themselves be incapable of achieving ecological or equity outcomes. A blend of approaches to allocating water may be more suitable. There is a growing trend in water management for increased collaboration and stakeholder driven governance approaches. Central to these approaches are inclusivity and capacity building. Collaborative efforts provide a structure for stakeholders to develop rules over allocation and management of water, as well rules for enforcement and compliance. Efforts will be required to include Indigenous interests in collaborative approaches. A key barrier in the experience of collaborative approaches in New Zealand is uncertainty around customary rights to water. Uncertainty over customary rights exists across northern Australia, and has the potential to reduce collaboration between stakeholders and constrain water planning and management efforts. Resolving Indigenous rights to water through creation of Indigenous property rights may address this uncertainty

Analysis of institutional arrangements and constraints affecting the establishment of water markets across northern Australia<br />

This report is the first of three reports and part of a two year project entitled Establishing water markets in northern Australia: a study to assess feasibility and consequences of market-based&nbsp; mechanisms of water delivery undertaken through the Australian National University&rsquo;s Crawford&nbsp; School of Economics and Government. The Tropical Rivers and Coastal Knowledge (TRaCK) hub funded this project under Theme 6.1 &ldquo;Sustainable Enterprises&rdquo;. This research is being undertaken in collaboration with the North Australian Indigenous Land and Sea Management Alliance (NAILSMA). This first report provides analysis of current institutional arrangements and constraints affecting the establishment of water markets across tropical Queensland, Northern Territory and Western Australia, (with focus on the Gulf, Timor and North East drainage divisions).Research needs were identified by TRaCK and NAILSMA (and the Indigenous Water Policy Group), and from this structured interview questions were developed. Data collection involved a review of literature from a number of different sources (government, media and scholarly articles) and utilised qualitative interviews with 42 State, Territory, Commonwealth government officials, land council representatives and experts. Data was collected through structured personal interviews using an open ended format; telephone interviews were undertaken when face-to-face interviews were not possible. Most interviews were audio recorded, with transcripts sent back to all interviewees for confirmation. Findings were developed comparing multiple data sources, and sent out to interviewees for their feedback. Changes were made where appropriate and from this the final report was then produced.The research findings highlight that the jurisdictions analysed have the framework in place to support water markets, but some States have more robust frameworks in place (such as Queensland)&mdash; however, it is emphasised that the development and importance of water markets is influenced by the demand for water in each of the jurisdictions. This study found that all jurisdictions have focused on planning in the north and have taken a precautionary approach to implementing water reform. This approach has been implemented using best available knowledge, but it is informed by a recognition that generally there is a limited understanding of the characteristics of water resources across the north, as well as related ecological and cultural values. Several features are shared across jurisdictions including a desire to support Indigenous access to water that may be accommodated through an Indigenous reserve (which may include water for drinking, customary and consumptive purposes) or through an entitlement, or ablend of both. Including Indigenous people in water planning has been hampered by community capacity in the north and relevant governments are constrained in overcoming this challenge by limited resources. A key finding of the study is that inter-basin transfers are not, in general, supported by interviewees and, at present, cross border trading is highly circumscribed. Some concern was also raised about inclusion of mining activities in water markets.Various constraints were identified to the establishment of water markets across northern Australia. The key constraints identified generally across the north include physical limits to trade, knowledge gaps and legislative and institutional frameworks. In the Northern Territory, interviewees identified community attitude and values as being a major limitation on the establishment of water markets. In Queensland, the Wild Rivers Act 2005 which prescribes the intensity of water-based development in the north was viewed as a significant barrier to water trading. In Western Australia, land tenure issues, particularly native title processes were seen as being the most significant limitation (albeit indirect) to the establishment of water markets in the north. Despite these constraints, many respondents recognised that establishing a robust and cost effective water management framework has the potential to support sustainable development outcomes across the north

A Comparative Assessment of Water Markets: Insights from the Murray-Darling Basin of Australia and the Western US

Water markets in Australia’s Murray-Darling Basin (MDB) and the US west are compared in terms of their ability to allocate scarce water resources. The study finds that the gains from trade in the MDB are worth hundreds of millions of dollars per year. Total market turnover in water rights exceeds $2 billion per year while the volume of trade exceeds over 20$4.3 billion (2008 $) spent or committed by urban buyers between 1987 and 2008. The two-market comparison suggests that policy attention should be directed towards ways to promote water trade while simultaneously mitigating the legitimate thirdparty concerns about how and where water is used, especially conflicts between consumptive and in situ uses of water. The study finds that institutional innovation is feasible in both countries and that further understanding about the size, duration, and distribution of third-party effects from water trade, and how these effects might be regulated, can improve water markets to better manage water scarcity.water markets, US west, Murray-Darling Basin, gains from trade