scholarly journals Efficient supersonic air vehicle design using the Service-Oriented Computing Environment (SORCER)

2014 ◽  
Vol 5 ◽  
pp. A25 ◽  
Author(s):  
Scott A. Burton ◽  
Edward J. Alyanak ◽  
Raymond M. Kolonay
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Optimization Method ◽  
Computing Environment ◽  
Service Oriented Computing ◽  
Air Vehicle ◽  
Service Oriented ◽  
And Performance ◽  
Vehicle Technologies ◽  
The Impact

The Air Force Research Lab’s Multidisciplinary Science and Technology Center is investigating conceptual design processes and computing frameworks that could significantly impact the design of the next generation efficient supersonic air vehicle (ESAV). The ESAV conceptual design process must accommodate appropriate fidelity multidisciplinary engineering analyses (MDAs) to assess the impact of new air vehicle technologies. These analyses may be coupled and computationally expensive, posing a challenge due to the large number of air vehicle configurations analyzed during conceptual design. In light of these observations, a design process using the Service-Oriented Computing Environment (SORCER) software is implemented to combine propulsion, structures, aerodynamics, aeroelasticity, and performance in an integrated MDA. The SORCER software provides the automation and tight integration to grid computing resources necessary to achieve the volume of appropriate fidelity analyses required. Two design studies are performed using a gradient-based optimization method to produce long and short range ESAV wing designs. The studies demonstrate the capability of the ESAV MDA, the optimization algorithm, and the computational scalability and reliability of the SORCER software.

Mobile Web Services for P2P Computing

2010 ◽  
pp. 133-157
Author(s):  
Fahad Aijaz
Keyword(s):  
Web Services ◽  
Performance Optimization ◽  
Mobile Nodes ◽  
P2p Computing ◽  
Mobile Web Services ◽  
Mobile Web ◽  
Service Oriented Computing ◽  
Service Oriented ◽  
Design Characteristics ◽  
And Performance

The Information Technology (IT) and Telecommunication (TelCo) sectors face enormous integration challenges, due to the prominent heterogeneity in existing systems. Service-oriented computing tackles such challenges by providing a fundamental platform that facilitates the convergence of distinct domains based on Web Services (WSs). With the mobility and technological advancements, service-oriented computing has been pushed towards the mobile sector enabling P2P Mobile Web Services (MobWSs) provisioning. In this work, we investigate the interaction, architecture and design characteristics of MobWSs for P2P computing. Here, the two MobWS interaction strategies are presented followed by the architectural discussion, enfolding server and client side components, of a resource-oriented MobWS framework. We follow REST design principles to propose an efficient way of architecting P2P MobWS systems, as an alternative to SOAP, enabling significant payload reduction and performance optimization in mobile servers. The detailed performance evaluation is also presented and compared to SOAP based on real-time measurements. By analyzing performance characteristics, we show that REST is a promising technique to architect P2P MobWS systems for resource-constraint mobile nodes.

Service ORiented Computing EnviRonment (SORCER) for deterministic global and stochastic aircraft design optimization: part 1

2017 ◽  
Vol 4 (3) ◽  
pp. 297-316
Author(s):  
Chaitra Raghunath ◽  
Layne T. Watson ◽  
Mohamed Jrad ◽  
Rakesh K. Kapania ◽  
Raymond M. Kolonay
Keyword(s):  
Design Optimization ◽  
Aircraft Design ◽  
Computing Environment ◽  
Service Oriented Computing ◽  
Service Oriented

On the Impact of AOSE in Service-Oriented Computing

2007 ◽  
pp. 69-83
Author(s):  
Laura Bocchi ◽  
Paolo Ciancarini ◽  
Rocco Moretti ◽  
Valentina Presutti
Keyword(s):  
Service Oriented Computing ◽  
Service Oriented ◽  
The Impact

Unmanned aerial vehicle derivative design optimization based on light sport aircraft

2016 ◽  
Vol 231 (3) ◽  
pp. 485-496 ◽  
Author(s):  
Hyeong-Uk Park ◽  
Joon Chung ◽  
Jae-Woo Lee ◽  
Daniel Neufeld
Keyword(s):  
Design Optimization ◽  
Unmanned Aerial Vehicle ◽  
Design Process ◽  
Optimization Technique ◽  
Optimization Method ◽  
Vehicle Design ◽  
Baseline Design ◽  
Aerial Vehicle ◽  
Design Requirements ◽  
And Performance

Manufacturers often develop new products by modifying and extending existing products in order to achieve new market demands while minimizing development time and manufacturing costs. In this research, an efficient derivative design process was developed to efficiently adapt existing aircraft designs according to new requirements. The proposed design process was evaluated using a case study that derives an unmanned aerial vehicle design from a baseline manned 2-seatlight sport aircraft. Multiple unmanned aerial vehicle operational scenarios were analysed to define the requirements of the derivative aircraft. These included patrol, environmental monitoring, and communications relay missions. Each mission has different requirements and therefore each resulting derivative unmanned aerial vehicle design has different geometry, devices, and performance. The derivative design process involved redefining the design requirements and identifying the minimum design variable set that needed to be considered in order to efficiently adapt the baseline design. Uncertainty was considered as well to enhance the reliability of the optimized result when it considered different conditions for each mission. An optimization method based on the possibility based design optimization was proposed to handle uncertainty that arises in the design requirements for the multi-role nature of unmanned aerial vehicles. In this paper, the possibility based design optimization method was implemented with multidisciplinary design optimization technique to derive the derivative unmanned designs based on originally manned aircraft. This approach prevented constraint violation via uncertainty variations in the operating altitude and payload weight for each. The unmanned aerial vehicle derivative designs satisfying the requirements of three different missions were derived from the proposed design process.

Consistent Conceptual Design and Performance Modeling of Aero Engines

2015 ◽  
Author(s):  
Sebastian Samuelsson ◽  
Konstantinos G. Kyprianidis ◽  
Tomas Grönstedt
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Performance Modeling ◽  
Pressure Ratio ◽  
Thermodynamic Cycle ◽  
Or Efficiency ◽  
Ratio Distribution ◽  
Modeling Process ◽  
And Performance ◽  
Operating Points

During the conceptual design process of an engine, a thermodynamic cycle is initially defined. This is done to ensure that all aircraft requirements, defined in a number of discrete operating points, can be met. Critical component requirements can then be screened off from these operating points underpinning the conceptual design process. As an example, this has traditionally meant that aerodynamic sizing for low specific thrust turbofan engines occurs at top-of-climb and mechanical and temperature constraints are set at take-off. By providing additional parameters indicating the level of technology assumed, such as diffusion factors and stage loadings, a basic geometric representation of the engine can be mapped out as part of the conceptual design process. However, by choosing the parameters representing the component technology levels explicitly, the ability to trade efficiency for weight, or efficiency for cost, becomes less potent. In general, an explicit parameter choice will mean that a suboptimal solution is found. Hence, it makes sense to develop methods that allow including these technology parameters into the conceptual design and performance modeling process in a consistent way. If, for instance, component efficiency is modeled based on turbomachinery stage loading, including the stage loading parameters into the optimization means that the efficiency must be updated based on the stage loading variation. In general, a consistent method requires that conceptual design input is collected in a number of performance operating points, transferred into the conceptual design process and that output from the conceptual design process is returned to the optimizer. To illustrate the consistent conceptual design and performance modeling process, turbomachinery component models are included in the paper, interrelating polytropic efficiency, Reynolds number, size effects and component entry into service. These equations are solved consistently in the conceptual design and performance modeling to establish an optimum year 2020 engine. The method is then further illustrated by comparing the year 2020 engine with two year 2030 engines. The first year 2030 engine is established by an optimization assuming fixed polytropic turbomachinery efficiencies. The other case is defined by assuming the same engine architecture, i.e., the same number of turbomachinery stages as the year 2020 engine. In this case, the efficiency modeling is done using a consistent conceptual design optimization. The consistent optimization produced a more efficient engine despite the fact that the stage numbers were limited to the year 2020 configuration. The benefit is obtained by more thoroughly exploring the pressure ratio distribution between the engine components, as a result of the consistent optimization methodology.

scholarly journals HOW TO AUGMENT TASK AND CONTEXTUAL PERFORMANCE THROUGH EMPLOYEE ENGAGEMENT

2016 ◽  
Vol 12 (2) ◽  
Author(s):  
Bilal Khalid
Keyword(s):  
Employee Engagement ◽  
Practical Implication ◽  
Contextual Performance ◽  
Middle Level ◽  
The Other ◽  
Manufacturing Organizations ◽  
Service Oriented ◽  
And Performance ◽  
Telecom Sector ◽  
The Impact

Objective: The basic aim of the present study is to examine the impact of vigor and dedication on task as well as on contextual performance of employees in telecom sector of Pakistan. Human asset play their role as backbone in the organization, that’s why organizations in current era focusing on their development and engagement at workplace. Methodology: The present study based on 230 respondents (middle level managers) from private telecom organizations of Islamabad/Rawalpindi. Findings: results of the study show that vigor and dedication positively and significantly affect task and contextual performance of employees. Practical Implication: The present study is beneficial for the management of the Telecom sector within Islamabad/Rawalpindi as well as for other relevant settings. The future study should take into account the other dimensions of engagement and performance, replication of this study in other settings (service oriented / manufacturing organizations) are also recommended.

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