Conceptual Design of Mars Octastrut Lander for Large Scale Mass Landing

2021 ◽  
Author(s):  
Malaya Kumar Biswal M ◽  
Ramesh Naidu Annavarapu
Keyword(s):  
Conceptual Design ◽  
Large Scale

A computer-assisted automatic conceptual design system for the distributed multi-disciplinary resource environment

2016 ◽  
Vol 231 (6) ◽  
pp. 1094-1112 ◽  
Author(s):  
Bin Chen ◽  
You-Bai Xie
Keyword(s):  
Conceptual Design ◽  
Large Scale ◽  
Design System ◽  
Computer Assisted ◽  
Illustrative Case ◽  
Detail Design ◽  
Starting Point ◽  
Design Resources ◽  
The Rich ◽  
Resource Environment

The trend of large-scale development of design industry requires efficient and full use of the rich design resources in the distributed multi-disciplinary resource environment. However, the designers are susceptible to many subjective and objective impacts, like knowledge structure, computing capability, geographic position, and administrative division. These impacts make the usage of design resources unstable and inefficient. Therefore, this paper proposed a computer-assisted automatic conceptual design system (CACDS). This system assumes that the design resources in the distributed multi-disciplinary resource environment exist in the form of functional elements with the same format, so that, the geographic, administrative, and disciplinary barriers in the design process can be broken, and the design resources can be fully used. CACDS is based on a group of basic concepts and their representations, its core is a functional solution generating algorithm, which is used to automatically generate functional solutions. As the result of the conceptual design, these functional solutions are also the starting point of the following detail design phase. Finally, a lighting system for underground greenhouse is designed as an illustrative case to validate the feasibility of the proposed CACDS.

Mission Critical Events

2015 ◽  
pp. 38-49
Keyword(s):  
Decision Making ◽  
Conceptual Design ◽  
Large Scale ◽  
Problem Definition ◽  
Analytic Structure ◽  
Critical Events ◽  
Operational Conditions ◽  
Time Compression ◽  
Operational Decision Making ◽  
Mission Critical

Mission critical events are changing operational conditions that will have a significant impact on the mission. If they are specified correctly, one can begin to design meaningful crew station responses. This chapter is about how to make decisions that are appropriate for the environment; in this case, under increased time compression. The theoretical focus of decisions shifts the conceptual design of the decision analytic structure forward to the problem definition stage. In large-scale dynamic systems, getting the problem right is often the most difficult task of the operator and operational manager. Operational decision making (ODM) stands in visible contrast to conventional decision making, and conventional decision theory, in that among all classes of decisions, an operational decision is singular, and contains a number of unique components.

scholarly journals Thomson linac-based X-ray generator: a primer for theory and design

2016 ◽  
Vol 34 (4) ◽  
pp. 637-644 ◽  
Author(s):  
I.A. Artyukov ◽  
E.G. Bessonov ◽  
M.V. Gorbunkov ◽  
Y.Y. Maslova ◽  
N.L. Popov ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Laser Radiation ◽  
Conceptual Design ◽  
Large Scale ◽  
State Of The Art ◽  
Thomson Scattering ◽  
Powerful Laser ◽  
X Ray ◽  
X Ray Imaging

AbstractThe paper presents a general theoretical framework and related Monte Carlo simulation of novel type of the X-ray sources based on relativistic Thomson scattering of powerful laser radiation. Special attention is paid to the linac X-ray generators by way of two examples: conceptual design for production of 12.4 keV photons and presently operating X-ray source of 29.4 keV photons. Our analysis shows that state-of-the-art laser and accelerator technologies enable to build up a compact linac-based Thomson source for the same X-ray imaging and diffraction experiments as in using of a large-scale X-ray radiation facility like a synchrotron or Thomson generator based on electron storage ring.

Conceptual Design of the Flow Noise Simulator

2003 ◽  
Author(s):  
Ryuichi Sato ◽  
Takayuki Mori ◽  
Ryo Yakushiji ◽  
Kenji Naganuma ◽  
Masaharu Nishimura ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Large Scale ◽  
Scale Model ◽  
Variable Pressure ◽  
Cavitation Noise ◽  
Flow Noise ◽  
Model Studies ◽  
Surface Ship ◽  
Noise Measurements ◽  
Under Construction

The Flow Noise Simulator (FNS) of the 1st Research Center of TRDI/JDA (Japan Defense Agency) is a large, variable pressure, recirculating water tunnel with very low background noise level. The tunnel is 20m high and 49m long, containing 2000m3 of water. The test section has a square cross section of 2m × 2m with 10m in length. It will accept large size surface ship models of 6m, submarine models of 4m in length and full scale ship appendix models. The FNS is currently under construction and will be accomplished in 2005. It will be used for a wide variety of hydrodynamic and hydroacoustic testing of surface ships and submarines, such as propeller cavitation noise measurements and propeller-hull interaction observation, with sufficiently large scale models. Conceptual design of the FNS was started in 1996 and evaluated by following scale model studies. This paper discusses some technical issues of the FNS.

An Update of the Virtual Energy Laboratory

2000 ◽  
Author(s):  
H. Perez-Blanco ◽  
Paul Albright
Keyword(s):  
System Design ◽  
Conceptual Design ◽  
Large Scale ◽  
Thermal System ◽  
Exergetic Efficiency ◽  
Thermal Systems ◽  
Large Scale Systems ◽  
Conceptual Designs

The Virtual Energy Lab (VEL) is a PC based didactic tool for use in conjunction with courses on technical thermodynamics and thermal system design. The tool can also be used for conceptual design of large-scale systems incorporating cogeneration schemes of varied types. The user can learn how to combine conventional thermal systems in creative ways to enhance exergetic efficiency. In the present work, we describe upgrades to this tool, and we present several examples to show the possibilities of energy cascading. The features of ease of learning, user ability to specify important parameters and ready targeting of conceptual designs were preserved in the updated version.

Research on Combined Lifting Conceptual Design for Large-Scale Ship

2011 ◽  
Vol 295-297 ◽  
pp. 473-476
Author(s):  
Ji Ping Zhang ◽  
Li Hua Tu
Keyword(s):  
Conceptual Design ◽  
Large Scale ◽  
Structure Characteristic ◽  
Bulk Carrier ◽  
Capacity Limit ◽  
Combined Operation ◽  
Lifting Equipment

Combined lifting conceptual design is put forward in the paper. Complete lifting for large subsection of large-scale ship can’t be achieved constantly according the capacity limit of lifting equipment, such the shipbuilding cost will increase greatly. So it is significant to study the conceptual design so as to make the best of the present equipments. Combined lifting conceptual is designed with two cranes and applied to the lifting about superstructure of 92500DWT bulk carrier, in which the software MSC Nastran is used to simulate the lifting process in allusion to the lifting condition and structure characteristic of superstructure. Results show that it is feasible to accomplish the complete lifting for large subsection through combined operation of different equipments. The research in the paper is significant for the lifting conceptual design of large subsection and with great value to popularize.

The Application of Heat Pipe Discharge Containment Heat Experimental Study: New Type of Passive Containment Heat Removal System Concept Design

2017 ◽  
Author(s):  
Haiqi Qin ◽  
Daogang Lu ◽  
Shengfei Wang
Keyword(s):  
Conceptual Design ◽  
Nuclear Power ◽  
Large Scale ◽  
Heat Removal ◽  
Operating Conditions ◽  
Concept Design ◽  
Heat Removal System ◽  
Removal System ◽  
Residual Heat

Practice has proved that nuclear power technology development and operation of nuclear power is a clean, safe and large-scale provided stable power. AP1000 uses a large number of passive safety technologies. Passive residual heat removal system is an important part, in the long-term cooling stage of nuclear reactor normal operating conditions or accident conditions, to prevent the core meltdown. The research of this paper is to solve the long-term discharge of residual heat of the containment in the accident condition of nuclear power plant. Based on the passive heat removal system of AP1000, combined with the heat transfer characteristics and advantages of heat pipes, the PRHR system is further improved on the basis of the present situation, and a conceptual design of passive containment residual heat removal system is proposed. In order to further verify the feasibility of the conceptual design, we make a simplified simulation of small containment test bench to carry out experimental verification and give a detailed experimental design.

scholarly journals A Logic Model Approach to Conceptual Design of a Scientific/Industrial Complex

2002 ◽  
Author(s):  
Terry F. Bott ◽  
Stephen W. Eisenhawer
Keyword(s):  
Conceptual Design ◽  
Large Scale ◽  
Numerical Data ◽  
Logic Model ◽  
Approximate Reasoning ◽  
Ar Model ◽  
Industrial Complex ◽  
Inference Models ◽  
Formal Basis ◽  
Design Options

We demonstrate how the use of logic models and approximate reasoning can lead to more effective conceptual design of a large-scale scientific/industrial complex. A deductive model is used to describe the relationships between the mission of a complex, the tasks that are the concrete expressions of the mission, and the capabilities and resources that allow the mission to be carried out. This deductive logic model provides the formal basis for integrating these relationships into a conceptual design and provides a framework to express design options that are an essential part of the description of the complex. A decision model for choosing among the design options is constructed using approximate reasoning. This AR model uses forward-chaining inference models to emulate the types of reasoning used by experts. This approach allows the analyst to use both numerical data when available and the qualitative knowledge that forms much of the information base used in conceptual designs of new and innovative complexes.

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