Raghu Chaitanya Munjulury, Ingo Staack, Adrián Sabaté López and Petter Krus
This paper aims to present a knowledge-based fuel system, implementation and application, oriented towards its use in aircraft conceptual design.
Abstract
Purpose
This paper aims to present a knowledge-based fuel system, implementation and application, oriented towards its use in aircraft conceptual design.
Design/methodology/approach
Methodology and software tools oriented to knowledge-based engineering applications (MOKA) is used as a foundation for the implementation and integration of fuel systems.
Findings
Including fuel systems earlier in the design process creates an opportunity to optimize it and obtain better solutions by allocating suitable locations in an aircraft, thereby reflecting on the centre of gravity of the aircraft.
Research limitations/implications
All geometries are symbolic, representing a space allocation inside the aircraft for the fuel system. A realistic representation of the real components could be realized in detail design.
Practical implications
Fuel weight is a significant part of take-off weight and decisive in aircraft sizing and range estimations. The three-dimensional geometry provides a better estimation of the volume that is available to allocate the necessary entities. It also provides fast measures for weight and balance, fuel capacity, relative tank positions and a first estimation of piping length.
Originality/value
Fuel systems appear early in the design process, as they are involved in several first estimations. By using a knowledge-based engineering approach, several alternatives can be visualized and estimated in the conceptual design process. Furthermore, using the weights and centre of gravity at different angles of pitch and roll of each fuel tank, the aircraft could be optimized for handling qualities by using automatically generated system simulation models.
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Keywords
Leonardo Murilo Nepomuceno, Roberto Gil Annes da Silva, Alejandro Sobron, Petter Krus and David Lundström
While computational methods are prevalent in aircraft conceptual design, recent advances in mechatronics and manufacturing are lowering the cost of practical experiments…
Abstract
Purpose
While computational methods are prevalent in aircraft conceptual design, recent advances in mechatronics and manufacturing are lowering the cost of practical experiments. Focussing on a relatively simple property, the lift curve, this study aims to increase understanding of how basic aerodynamic characteristics of a complex stealth configuration can be estimated experimentally using low-cost equipment, rapid prototyping methods and remotely piloted aircraft.
Design/methodology/approach
Lift curve estimates are obtained from a wind tunnel test of a three-dimensional-printed, 3.8%-scale model of a generic fighter and from flight testing a 14%-scale demonstrator using both a simple and a more advanced identification technique based on neural networks. These results are compared to a computational fluid dynamics study, a panel method and a straightforward, theoretical approach based on radical geometry simplifications.
Findings
Besides a good agreement in the linear region, discrepancies at high angles of attack reveal the shortcomings of each method. The remotely piloted model manages to provide consistent results beyond the physical limitations of the wind tunnel although it seems limited by instrumentation capabilities and unmodelled thrust effects.
Practical implications
Physical models can, even though low-cost experiments, expand the capabilities of other aerodynamic tools and contribute to reducing uncertainty when other estimations diverge.
Originality/value
This study highlights the limitations of commonly used aerodynamic methods and shows how low-cost prototyping and testing can complement or validate other estimations in the early study of a complex configuration.
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This paper aims to present the newly founded Swedish Aeronautical Research Center (SARC), based on the triple helix theory, to foster the seamless Swedish aerospace research…
Abstract
Purpose
This paper aims to present the newly founded Swedish Aeronautical Research Center (SARC), based on the triple helix theory, to foster the seamless Swedish aerospace research interplay between academia, research organizations and industry.
Design/methodology/approach
The paper is a technical paper, mainly relating and explaining sources and concepts for research planning and organization. Used concepts are the triple helix approach (for socioeconomic effects), the role of academia and industry interplay for education and the technology readiness level (TRL) concept for strategic research planning. Focusing on the establishment of a graduate school, lessons learned from previous national research schools are also presented.
Findings
The paper gives an overview of and explains the interplay between politics, social welfare and industrial R&D needs, with the academic viewpoint of aeronautical research and education. Shortcomings in both the use of TRL for research program planning and the Swedish competence cluster system are identified and remedies suggested. The main findings are suggestions for future actions to be conducted by SARC in the fields of research and education.
Practical implications
The paper includes implications for the seamless interplay between academia, research organizations and industry.
Originality/value
So far, no publication about the newly founded SARC has been made yet. It is unique in the way that it makes substantial use of national technical documents so that this information becomes available for non-Swedish speakers. Additionally, the perhaps-unique system of industrial competence clusters is presented.
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Lidia Santora, Geir Arild Espnes and Monica Lillefjell
The purpose of this paper is to examine the contribution of modern correctional service in health promotion exemplified by the case study of Norwegian health promotion policies in…
Abstract
Purpose
The purpose of this paper is to examine the contribution of modern correctional service in health promotion exemplified by the case study of Norwegian health promotion policies in prison settings.
Design/methodology/approach
This paper applies a two-fold methodology. First a narrative systematic literature review based on the Norwegian policy documents relevant for correctional settings is conducted. This is followed by a general review of the literature on the principles of humane service delivery in offender rehabilitation.
Findings
Alongside the contribution of the Risk-Need-Responsivity Model in corrections and prevention of reoffending, the findings demonstrate an evident involvement of Norway in health promotion through authentic health promoting actions applied in prison settings. The actions are anchored in health policy's overarching goals of equity and “health in all public policy” aiming to reduce social inequalities in population health.
Originality/value
In order to achieve a potential success of promoting health in correctional settings, policy makers have much to gain from endorsing a dialogue that respects the unique contributions of correctional research and health promotion. Focussing on inter-agency partnership and interdisciplinary collaboration between humane services may result in promising outcomes for individual, community and public health gain. The organizational factors and community involvement may be a significant aspect in prisoner rehabilitation, reentry and reintegration.