scholarly journals NANOSATELLITE MOTION SIMULATION FOR TESTING THE SUN SENSOR

2021 ◽  
Vol 118 (3) ◽  
pp. 34-42
Author(s):  
Yerkebulan Nurgizat
Keyword(s):  
Mathematical Model ◽  
The Sun ◽  
Motion Simulation ◽  
Test Results ◽  
Solar Panels ◽  
Small Spacecraft ◽  
Sun Sensor ◽  
The Earth ◽  
High Orientation

Nanosatellite (NS) began to perform complex missions that require high orientation. In this research, we developed a mathematical model of solar sensors to determine the orientation of a NS. Various moments of obtaining the angle of the sun's rays when they hit the solar sensors were presented. The test results of the solar sensors used to simulate various orbit scenarios are described in detail, and graphs of the solar sensor readings are plotted based on the results obtained. The article deals with modeling the motion of a NS in orbit. The NS is equipped with 6 solar panels. The VTS software was used to simulate the motion of the NS. Also, in the study of determining the orientation, two different problems were considered, that is, when the satellite is in the shadow part of the earth and when it is in the solar part of the earth. For these tasks, a mathematical model for determining the orientation was built. This method is very relevant for the study of small spacecraft.

scholarly journals Design and Implementation of Solar Tree

2019 ◽  
Vol 8 (12S) ◽  
pp. 180-182
Keyword(s):  
Solar Energy ◽  
Energy Production ◽  
Electrical Energy ◽  
The Sun ◽  
Solar Panels ◽  
Design And Implementation ◽  
The Earth ◽  
Sufficient Energy ◽  
The World ◽  
Enormous Amount

The paper is related to the solar energy power generation, more specifically the paper revolves around the topic of solar tree. This paper shows how efficient and important is the solar tree for this generation. This presents how solar trees converts the solar energy into electrical energy. Sunlight irradiates daily and blasts out an enormous amount of solar energy towards the earth, the total energy that is received from the sun is more than enough for humanity to run for many years, still the received solar energy is not harnessed properly and hence there is not sufficient energy production in the world. Since solar panels are the efficient method nowadays for generating electrical energy from the solar energy, but solar panels requires lot of space to install. Hence this paper solve this problem by using solar tree that is mounting of solar panels on artificial tree..

scholarly journals Accurate and Cost-Effective Micro Sun Sensor based on CMOS Black Sun Effect

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 739 ◽  
Author(s):  
Rashid Saleem ◽  
Sukhan Lee
Keyword(s):  
Cost Effective ◽  
Image Plane ◽  
Image Sensor ◽  
Stationary Mode ◽  
The Sun ◽  
Solar Panels ◽  
Moving Platforms ◽  
Sun Sensor ◽  
Sensor Orientation ◽  
Improved Accuracy

An accurate and cost-effective micro sun sensor based on the extraction of the sun vector using a phenomenon called the “black sun” is presented. Unlike conventional image-based sun sensors where there is difficulty in accurately detecting the sun center, the black sun effect allows the sun center to be accurately extracted even with the sun image appearing irregular and noisy due to glare. This allows the proposed micro sun sensor to achieve high accuracy even when a 1 mm × 1 mm CMOS image sensor with a resolution of 250 × 250 pixels is used. The proposed micro sun sensor is implemented in two application modes: (1) a stationary mode targeted at tracking the sun for heliostats or solar panels with a fixed pose of single image sensor of 1 mm × 1 mm × 1.74 mm in size and (2) a non-stationary mode targeted at determining the orientation of moving platforms with six sensors on the platform, which is configured in an icosahedron geometry of 23 mm × 23 mm × 12 mm in size. For the stationary mode, we obtained an accuracy of 0.013° by applying Kalman filter to the sun sensor measurement for a particular sensor orientation. For the non-stationary mode, we obtained an improved accuracy of 0.05° by fusing the measurements from three sun sensors available at any instant of time. Furthermore, experiments indicate that the black sun effect makes the precision of sun vector extraction independent of the sun location captured on the image plane.

scholarly journals Centralized Power Generation of Solar Parks using Wireless Controlling

2019 ◽  
Vol 9 (03) ◽  
Author(s):  
Anand M. Sharan ◽  
Mohammad Zamanlou ◽  
Md. Habibur Rahman ◽  
Mohammad A. A. Al-Mehdi
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Solar Energy ◽  
The Sun ◽  
Atmospheric Conditions ◽  
Solar Panels ◽  
The Earth ◽  
Photo Sensor ◽  
Mass Balancing

In this paper, solar energy based power plant is operated from a centralized location. From this location, signal is sent to various tracking machines having solar panels mounted on them to track the Sun from 6 A.M. to 6 P.M. This tracking is based on spin rate of the earth, which is not based on local atmospheric conditions; in our case, the tracking is based on global conditions (earth motions around the Sun). This process is different from normally used photo-sensor based tracking. The tracking machine is designed such that the torque of the motor is minimum due to mass balancing effect. This process is different from other tracking processes where each machine operates independent of each other. In this case likelihood of the occurrence of fault becomes many fold. The maintenance of such plants is very laborious and inefficient.

scholarly journals Prototype System of Solar Tracking Design to Optimize the Energy Absorption Based on Arduino

2020 ◽  
Vol 3 ◽  
pp. 251-254
Author(s):  
Alex Wenda ◽  
Rendy Dwi Putra
Keyword(s):  
Solar Energy ◽  
Rotation Axis ◽  
Tracking System ◽  
Prototype System ◽  
The Sun ◽  
Test Results ◽  
Solar Panels ◽  
Tilt Axis ◽  
Solar Tracking ◽  
Microcontroller Unit

This research optimizes the absorption of solar energy in solar panels by designing mechanical systems that can move solar panels in the direction of incoming sunlight. Light-sensitive sensors are used to track the sun. The solar tracking system is designed using two axes, namely rotation axis and the tilt axis. Both axes are driven by servo motors based on light-sensitive sensors. The system was developed using an ATmega328 microcontroller unit. The test results found that using solar tracking the amount of energy produced was greater than static solar panels. Radiation generated between solar tracking and static sun can increase by 55.2%.

scholarly journals Electrogravitic Propulsion System for a Satellite

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Takaaki Musha
Keyword(s):  
Theoretical Calculation ◽  
Electric Energy ◽  
Propulsion System ◽  
The Sun ◽  
Solar Panels ◽  
Space Propulsion ◽  
The Earth

Several methods for space propulsion, both pragmatic and hypothetical, have been developed each having its own drawbacks and advantages. In this paper, the possibility to propel a satellite by electrogravitic force is discussed. By theoretical calculation, this propulsion method can generate sufficient force to control the orbit of a satellite. It only uses electric energy generated by the use of solar panels and the satellite can travel perpetually around the Earth and any orbit near the Sun.

scholarly journals Sun Machines

2001 ◽  
Vol 123 (09) ◽  
pp. 46-50
Author(s):  
Paul Sharke
Keyword(s):  
San Francisco ◽  
Solar Heating ◽  
The Sun ◽  
Solar Panels ◽  
Heat Gain ◽  
The Earth ◽  
Energy Center ◽  
Night And Day ◽  
Intuitive Method ◽  
Solar Position

Pacific Energy Center in San Francisco offers building designers access to its heliodon. A machine that imitates the rotation and orbit of the Earth, a heliodon helps architects wanting to analyze passive solar heating options, site solar panels, or control solar heat gain. Sun machines are likely to always have a part in architecture. As instrumentation improves, sky simulators will see their roles increasingly directed toward comparative analyses. A silvered mesh, for example, while difficult to describe optically, could be tested easily in a sky simulator. Then, designers could feed the material’s optical characteristics into a program like Radiance, and proceed to simulate its effect on a room’s light. The heliodon provides an almost intuitive method of studying the sun as it makes its way across the seasonal skies. Into the sun machine are built the mathematics of solar position and seasonal variation, of night and day.

Seti Space Missions

1997 ◽  
Vol 161 ◽  
pp. 761-776 ◽  
Author(s):  
Claudio Maccone
Keyword(s):  
Electromagnetic Waves ◽  
Space Missions ◽  
Gravitational Lens ◽  
The Sun ◽  
Space Antenna ◽  
Focal Distance ◽  
Large Space ◽  
The Earth ◽  
Space Antennas ◽  
New Space

AbstractSETI from space is currently envisaged in three ways: i) by large space antennas orbiting the Earth that could be used for both VLBI and SETI (VSOP and RadioAstron missions), ii) by a radiotelescope inside the Saha far side Moon crater and an Earth-link antenna on the Mare Smythii near side plain. Such SETIMOON mission would require no astronaut work since a Tether, deployed in Moon orbit until the two antennas landed softly, would also be the cable connecting them. Alternatively, a data relay satellite orbiting the Earth-Moon Lagrangian pointL2would avoid the Earthlink antenna, iii) by a large space antenna put at the foci of the Sun gravitational lens: 1) for electromagnetic waves, the minimal focal distance is 550 Astronomical Units (AU) or 14 times beyond Pluto. One could use the huge radio magnifications of sources aligned to the Sun and spacecraft; 2) for gravitational waves and neutrinos, the focus lies between 22.45 and 29.59 AU (Uranus and Neptune orbits), with a flight time of less than 30 years. Two new space missions, of SETI interest if ET’s use neutrinos for communications, are proposed.

Spots on the Sun and Life on the Earth

2019 ◽  
Vol 15 (1) ◽  
pp. 73-77
Author(s):  
Valentina V. Ukraintseva ◽  
Keyword(s):  
The Sun ◽  
The Earth

Much Ado about (Practically) Nothing

2010 ◽  
Author(s):  
David Fisher
Keyword(s):  
Energy Source ◽  
Atomic Nucleus ◽  
The Sun ◽  
Scientific Journals ◽  
Rare Gases ◽  
Important Work ◽  
The Earth ◽  
Wide Range ◽  
Life On Mars ◽  
The Universe

There are eight columns in the Periodic Table. The eighth column is comprised of the rare gases, so-called because they are the rarest elements on earth. They are also called the inert or noble gases because, like nobility, they do no work. They are colorless, odorless, invisible gases which do not react with anything, and were thought to be unimportant until the early 1960s. Starting in that era, David Fisher has spent roughly fifty years doing research on these gases, publishing nearly a hundred papers in the scientific journals, applying them to problems in geophysics and cosmochemistry, and learning how other scientists have utilized them to change our ideas about the universe, the sun, and our own planet. Much Ado about (Practically) Nothing will cover this spectrum of ideas, interspersed with the author's own work which will serve to introduce each gas and the important work others have done with them. The rare gases have participated in a wide range of scientific advances-even revolutions-but no book has ever recorded the entire story. Fisher will range from the intricacies of the atomic nucleus and the tiniest of elementary particles, the neutrino, to the energy source of the stars; from the age of the earth to its future energies; from life on Mars to cancer here on earth. A whole panoply that has never before been told as an entity.

Dombey and Son

2008 ◽  
Author(s):  
Charles Dickens ◽  
Dennis Walder
Keyword(s):  
Family Relationships ◽  
The Sun ◽  
The Novel ◽  
The Earth ◽  
The Future ◽  
Original Illustrations ◽  
The One

Dombey and Son ... Those three words conveyed the one idea of Mr. Dombey's life. The earth was made for Dombey and Son to trade in, and the sun and moon were made to give them light.' The hopes of Mr Dombey for the future of his shipping firm are centred on his delicate son Paul, and Florence, his devoted daughter, is unloved and neglected. When the firm faces ruin, and Dombey's second marriage ends in disaster, only Florence has the strength and humanity to save her father from desolate solitude. This new edition contains Dickens's prefaces, his working plans, and all the original illustrations by ‘Phiz’. The text is that of the definitive Clarendon edition. It has been supplemented by a wide-ranging Introduction, highlighting Dickens's engagement with his times, and the touching exploration of family relationships which give the novel added depth and relevance.

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