scholarly journals CONFIGURATION SELECTION AND ANALYSIS OF A SUPERSTRUCTURE SOLAR SAIL

2021 ◽  
Vol 9 (2) ◽  
pp. 1186-1192
Author(s):  
Suresh P, Et. al.
Keyword(s):  
Radiation Pressure ◽  
Solar Sail ◽  
Propulsion System ◽  
Field Of Study ◽  
Configuration Selection ◽  
Selection Of

Solar sail propulsion is one of the most innovative spaceship propulsion system which make use of the radiation pressure in space. The continuous supply of radiation pressure means the ship has infinite propellant reserve. Theoretically, the solar sail keeps accelerating to gain high velocities due to this continuous supply of radiation pressure, therefore this system is ideal for interstellar exploration. As there are numerous developments going on this field of study, it is important to have a generalized sail design that can be used for further developments. This paper gives the configuration selection of the sail along with calculations and analysis to develop a superstructure solar sail, which is theoretically ideal for interstellar exploration and for future engineering

Influence of Shape Change Caused by Warp of Thin-film Device on Solar Radiation Pressure Torque in Solar Sail

2020 ◽  
Vol 19 (0) ◽  
pp. 101-110
Author(s):  
Rikushi KATO ◽  
Masanori MATSUSHITA ◽  
Hideyuki TAKAHASHI ◽  
Osamu MORI ◽  
Nobukatsu OKUIZUMI ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Radiation ◽  
Radiation Pressure ◽  
Shape Change ◽  
Solar Radiation Pressure ◽  
Solar Sail ◽  
Thin Film Device

Romance and Latin approaches to word structure features

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Elisabeth Gibert-Sotelo ◽  
Isabel Pujol Payet
Keyword(s):  
The Other ◽  
Special Issue ◽  
Valuable Contribution ◽  
Field Of Study ◽  
Word Structure ◽  
New Approaches ◽  
Theoretical Approaches ◽  
Special Collection ◽  
Introductory Paper ◽  
Selection Of

Abstract The interest in morphology and its interaction with the other grammatical components has increased in the last twenty years, with new approaches coming into stage so as to get more accurate analyses of the processes involved in morphological construal. This special issue is a valuable contribution to this field of study. It gathers a selection of five papers from the Morphology and Syntax workshop (University of Girona, July 2017) which, on the basis of Romance and Latin phenomena, discuss word structure and its decomposition into hierarchies of features. Even though the papers share a compositional view of lexical items, they adopt different formal theoretical approaches to the lexicon-syntax interface, thus showing the benefit of bearing in mind the possibilities that each framework provides. This introductory paper serves as a guide for the readers of this special collection and offers an overview of the topics dealt in each contribution.

Hybrid Estimation of Solar Radiation Pressure for a Spinning Solar Sail Spacecraft

2014 ◽  
Vol 51 (1) ◽  
pp. 381-384 ◽  
Author(s):  
Tomohiro Yamaguchi ◽  
Yuya Mimasu ◽  
Yuichi Tsuda ◽  
Makoto Yoshikawa
Keyword(s):  
Solar Radiation ◽  
Radiation Pressure ◽  
Solar Radiation Pressure ◽  
Solar Sail ◽  
Hybrid Estimation

Selection of an Optimized Integrated Propulsion System

1981 ◽  
Vol 18 (6) ◽  
pp. 499-505 ◽  
Author(s):  
H. Macklis ◽  
R.L. Sackheim ◽  
B. Vogt
Keyword(s):  
Propulsion System ◽  
Selection Of

Decision tree classifiers for unmanned aircraft configuration selection

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
João Antônio Dantas de Jesus Ferreira ◽  
Ney Rafael Secco
Keyword(s):  
Decision Tree ◽  
Aircraft Design ◽  
Classification Problem ◽  
Unmanned Aircraft ◽  
Requirements Traceability ◽  
Content Type ◽  
Configuration Selection ◽  
Incomplete Databases ◽  
Engine Type ◽  
Selection Of

Purpose This paper aims to investigate the possibility of lowering the time taken during the aircraft design for unmanned aerial vehicles by using machine learning (ML) for the configuration selection phase. In this work, a database of unmanned aircraft is compiled and is proposed that decision tree classifiers (DTC) can understand the relations between mission and operational requirements and the resulting aircraft configuration. Design/methodology/approach This paper presents a ML-based approach to configuration selection of unmanned aircraft. Multiple DTC are built to predict the overall configuration. The classifiers are trained with a database of 118 unmanned aircraft with 57 characteristics, 47 of which are inputs for the classification problem, and 10 are the desired outputs, such as wing configuration or engine type. Findings This paper shows that DTC can be used for the configuration selection of unmanned aircraft with reasonable accuracy, understanding the connections between the different mission requirements and the culminating configuration. The framework is also capable of dealing with incomplete databases, maximizing the available knowledge. Originality/value This paper increases the computational usage for the aircraft design while retaining requirements’ traceability and increasing decision awareness.

On-orbit verification of fuel-free attitude control system for spinning solar sail utilizing solar radiation pressure

2011 ◽  
Vol 48 (11) ◽  
pp. 1740-1746 ◽  
Author(s):  
Ryu Funase ◽  
Yoji Shirasawa ◽  
Yuya Mimasu ◽  
Osamu Mori ◽  
Yuichi Tsuda ◽  
...  
Keyword(s):  
Control System ◽  
Solar Radiation ◽  
Radiation Pressure ◽  
Attitude Control ◽  
Solar Radiation Pressure ◽  
Solar Sail ◽  
Attitude Control System

Pugh Analysis for Configuration Selection of a Hybrid Buoyant Aircraft

2015 ◽  
Author(s):  
Anwar ul Haque ◽  
Waqar Asrar ◽  
Erwin Sulaeman ◽  
Ashraf Omar ◽  
Jaffar Syed Mohamed Ali
Keyword(s):  
Configuration Selection ◽  
Selection Of

Gravitational towing of asteroids by spacecrafts with a solar sail as a propulsion system

2020 ◽  
Author(s):  
R.M. Poluektov ◽  
M.V. Skrob
Keyword(s):  
Comparative Analysis ◽  
Solar Sail ◽  
Propulsion System ◽  
Joint Motion ◽  
Jet Engines ◽  
Low Thrust ◽  
Design Features ◽  
Long Period ◽  
The Impact

The paper considers the possibility of changing the orbit of potentially dangerous aste-roids using a gravity tractor. The concept of using spacecrafts equipped with a solar sail for gravitational towing is described. The analysis of this type spacecraft effectiveness is carried out on the example of changing the orbit of the Apophis asteroid. Software and mathematical support for modeling the joint motion of the asteroid-spacecraft system has been developed. The model was used to assess the impact of spacecraft with design features on the asteroid’s orbit over a long period of time. Several variants of the spacecraft configuration with different weight and sail design are considered. A comparative analysis of the results of using solar sail vehicles with similar vehicles using low-thrust jet engines is carried out.

Path Planning Based on Distance Transformation and Its VLSI Implementation

2000 ◽  
Vol 12 (5) ◽  
pp. 527-533 ◽  
Author(s):  
Masanori Hariyama ◽  
Michitaka Kameyama
Keyword(s):  
Path Planning ◽  
Free Path ◽  
Collision Detection ◽  
Minimum Distance ◽  
Memory Architecture ◽  
Distance Transformation ◽  
Processing Elements ◽  
Configuration Selection ◽  
Robot Configuration ◽  
Selection Of

This paper presents a fast path planning method to find a feasible collision-free path. A collision-free path is searched for by iterations of selection of a robot configuration and collision detection for it. A most promising configuration is selected according to a minimum distance from every point in 3-D workspace and obstacles. The configuration selection keeps a robot as far away as possible from obstacles, and reduces the number of configurations for collision detection. Moreover, a highly-parallel processor based on logicin-memory architecture is proposed to overcome a transfer bottleneck between a memory and processing elements.

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