Assessment of the Thermal Advantages of Biased Supersonic Cooling

The following work investigates an alternative supersonic film cooling method for hydrogen-fueled, gas-generator cycle rocket engines. The research is intended to serve as an initial proof-of-concept for a biased supersonic film cooling method envisioned for nozzle extension thermal management. The proposed method utilizes a dual-stream injection process that leverages the high heat capacity of the fuel-rich gas-generator gases. By comparing the proposed cooling strategy to the conventional mixed injection process, the research numerically validates the biased supersonic film cooling scheme for low supersonic slot Mach numbers. The average film cooling effectiveness was improved 5%-8% with increases as high as 12%. The average reduction in wall temperature ranged from 9%-15% with maximum reductions as high as 36% over the conventional method

DLR Lampoldschausen combines its successful space focus with forward-looking energy research

Energy-intensive applications are both the origin and future of hydrogen research, which has been an integral part of spaceflight for several decades. Researchers at the DLR Institute of Space Propulsion in Lampoldshausen are modelling the entire process, from the generation of renewable hydrogen to storage and liquefaction, all the way through to the testing of hydrogen in rocket propulsion systems. This work is making a major contribution towards achieving future sustainable spaceflight; meanwhile, the knowledge gained in working with hydrogen is being transferred to sectors including energy, mobility, air transport and shipping. Furthermore, this work is also kindly acknowledged by Hydrogen Europe Research, the leading European grouping on Fuel Cells and hydrogen technologies

Fifth International Symposium on Liquid Space Propulsion

Contents include the fiollowing: Theme: Life-life Combustion Devices Technology. Technical Sessions: International Perspectives. System Level Effects. Component Level Processes. Material Considerations. Design Environments -- Predictions. Injector Design Technology. Design Environments -- Measurements. Panel Discussion: Views on future research and development needs and Symposium observations. Aquarium Welcome and Southern Belle Riverboat Recognition Banquet evening events

Outlook on the New Generation of European Reusable Launchers

The technical investigations described in this paper evaluate the two seemingly antipodal design approaches of either establishing a launcher family consisting of modular building blocks or choosing a full-size reusable launcher stage which serves all missions with adaptations limited to the upper- and kick-stage selection. The paper summarizes major results of the preliminary technical design process iteratively performed at DLR-SART. The overall shape and aerodynamic configuration, the propulsion, the architectures of the stages are described and different technical solutions are compared. Payload performance is optimized for the different concepts in the GTO-mission, manned flight to ISS and to SSO. The winged configurations’ controllability in hypersonic reentry and subsequent subsonic flight is assessed

Towards an Innovation-Intensive Circular Economy. Integrating Research, Industry and Policies

The report ‘Towards an Innovation-intensive Circular Economy. Integrating research, industry, and policies’ is a result of the cooperation between FEEM and Università Cattolica. The report proposes an original perspective to the circular economy as a paradigm of change that involves the whole production system. While material circularity is increasing under the pressure of decades of waste/recycling policies in Europe and Italy, a ‘new’ circular economy more intensive of technological and social innovation is establishing itself beyond the waste/recycling system, and it involves the material and organisational efficiency of enterprises and the whole production/consumption systems. The report starts from a stocktaking of definitions, public policies, quantifications, innovations, and institutional initiatives on the circular economy in Europe and in Italy. Two ‘integrative approaches’ are then proposed for achieving a better interaction between research, industry, and policies. The first approach exploits the concepts of ‘System of innovation’ (national, regional, sectoral) to redefine the process towards a circular economy. In such a ‘System of innovation’, enterprises are at the core, and the sub-systems of policies, finance, research/university, and civil society can contribute, through network interactions, to the change of the industrial and consumption paradigms towards resource efficiency and circularity. By means of this approach, it is easier to understand the importance of internal factors (for example industrial capabilities and strategies) as well external factors (for example European research programmes and finance) in creating opportunities or barriers to the circular economy. The second ‘integrative’ approach mirrors the intrinsically systemic features of the circular economy by suggesting to put it in connection to other major transitions of this phase, in particular decarbonisation and the bioeconomy, through a NEXUS-type approach. The interactions between circular economy, decarbonisation, and the bioeconomy are several but not necessarily they are synergic in that potential conflicts may arise. Synergies and conflicts, for example through an intensive use of biomass for energy, are not fully recognised by policies, which are still designed and implemented with a sector-minded approach. This can impair the performance of enterprises in pursuing a profitable circularity strategy. The report also addresses some open issues in the ‘economics of the circular economy’, like the low prices of primary commodities that do not create incentives to circularity innovations, thus assigning a major burden to policy instruments (for example fiscal instruments), and the changing attitude of the financial sector, which is moving towards the adoption of circularity criteria in the allocation for financial resources

Aeronautical engineering: A continuing bibliography with indexes (supplement 255)

This bibliography lists 529 reports, articles, and other documents introduced into the NASA scientific and technical information system in June 1990. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

Proceedings of the 10th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurized Components

This conference, the tenth in a series on NDE in relation to structural integrity for nuclear and pressurized components, was held from 1st October to 3 October 2013, in Cannes, France. The scientific programme was co-produced by the European Commission’s Joint Research Centre, Institute for Energy and Transport (EC-JRC/IET). The Conference has been coordinated by the Confédération Française pour les Essais Non Destructifs (COFREND). The first conference, under the sole responsibility of EC-JRC was held in Amsterdam, 20-22 October 1998. The second conference was locally organized by the EPRI NDE Center in New Orleans, 24-26 May 2000, the third one by Tecnatom in Seville, 14-16 November 2001, the fourth one by the British Institute of Non-Destructive Testing in London, 6-8 December 2004, the fifth by EPRI in San Diego, 10-12 May 2006, the sixth by Marovisz in Budapest, 8-10 October 2007, the seventh by the University of Tokyo and JAPEIC in Yokohama, the eight by DGZfP, 29 September to 1st October 2010, the ninth by Epri NDE Center, 22-24 May 2012 in Seattle. The theme of this conference series is to provide the link between the information originated by NDE and the use made of this information in assessing structural integrity. In this context, there is often a need to determine NDE performance against structural integrity requirements through a process of qualification or performance demonstration. There is also a need to develop NDE to address shortcomings revealed by such performance demonstration or otherwise. Finally, the links between NDE and structural integrity require strengthening in many areas so that NDE is focussed on the components at greatest risk and provides the precise information required for assessment of integrity. These were the issues addressed by the papers selected for the conference.JRC.F.5-Nuclear Reactor Safety Assessmen

Chronology of KSC and KSC Related Events for 2011

This document is intended to serve as a record of KSC events and is a reference source for historian and other researchers. Arrangement is by day and month and individual articles are attributed to published sources. Materials were researched and compiled by the KSC Library Archivist for KSC Library Services Contractor, Abacus Technology Corporation

Exploring Written Artefacts

This collection, presented to Michael Friedrich in honour of his academic career at of the Centre for the Study of Manuscript Cultures, traces key concepts that scholars associated with the Centre have developed and refined for the systematic study of manuscript cultures. At the same time, the contributions showcase the possibilities of expanding the traditional subject of ‘manuscripts’ to the larger perspective of ‘written artefacts’

Exploring Written Artefacts

This collection, presented to Michael Friedrich in honour of his academic career at of the Centre for the Study of Manuscript Cultures, traces key concepts that scholars associated with the Centre have developed and refined for the systematic study of manuscript cultures. At the same time, the contributions showcase the possibilities of expanding the traditional subject of ‘manuscripts’ to the larger perspective of ‘written artefacts’