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pre> Given the increasing number of space-related applications, research in the emerging space industry is becoming more and more attractive. One compelling area of current space research is the design of miniaturized satellites, known as CubeSats, which are enticing because of their numerous applications and low design-and-deployment cost. The new...
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... Q i is the right ascension of the ascending node. Fig. 7 shows an example of such constellation design, where a group of three orbits on the same orbital plane is used with the same inclination, eccentricity, and semimajor axis. Flower constellations provide some interesting orbital mechanics for flying formation and can support both regional and global area services. Satellite constellation ...
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Given the increasing number of space-related applications, research in the emerging space industry is becoming more and more attractive. One compelling area of current space research is the design of miniaturized satellites, known as CubeSats, which are enticing because of their numerous applications and low design-and-deployment cost. The new para...
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... Athip Thirupathi Raj, 1 Connor Sturgeon, 2 ...
Autonomous docking is an important part of spacecraft innovation since it unlocks the potential for spacecraft to join, thus opening the realm of in-space assembly (making bigger complex space structures using building blocks) and on-orbit servicing (transfer of goods and services in space). Non-contact docking is a concept where two or more spacecraft are locked to each other without any physical contact between each other. This creates a safer way to attach to another spacecraft since if there are any errors while approaching the mother spacecraft, there is less probability of both crashing since the magnet will repel the spacecraft. Therefore, there is less chance of touch and leakage issues. Smaller spacecraft that operate through non-contact docking can be used in formation flying, surveillance, security, and fault detection for larger “mother” spacecraft.
In this paper, we discuss the concept and technology needed to achieve non-contact docking in the space environment. Our objective is to have two spacecraft in space and being able to do autonomous non-contact docking. The docking spacecraft may identify each other using active lighting cues by using flashing LEDs and photodetectors. Once the spacecraft have been identified they will approach each other and align accordingly so that both magnets are next to each other. Once the two spacecraft are sufficiently close enough to each other, we propose using magnets for alignment and non-contact docking.
Electromagnetic levitation is one of the safest ways of approaching this problem. A magnetic field will ensure a stable storage position and will enable the CubeSat to “hover” around the mother spacecraft. This can be achieved by including ratio-metric sensors, once the magnetic field increases the voltage will also increase in the electromagnet, with a negative feedback to help it stabilize. The device will have concentric anti-polar magnets that repel and attract to have a stable position. Multiple tests of the electromagnets signal level will be done to make sure the spacecraft can be levitated. This will provide an idea on how far the spacecraft can be reached from. We aim to arrive at relations between magnetic field strength, electric power consumption and corresponding hover distances between spacecraft of various masses by means of simulations and preliminary lab testing.
... List of a few well-known CubeSat missions and small satellite projects, adapted from[9], licensed under CC BY 4.0. ...
CubeSats and small satellite solutions are increasing in popularity as they enable a fast, cheap, and agile way for satellite applications. An essential component of nearly every satellite is the energy storage device, which is practically equal to a battery. Consequently, an overview of past, present, and future battery technologies for CubeSats is presented. CubeSats use typically commercial off-the-shelf (COTS) batteries. They are not primarily dedicated to space, so their suitability to the space environment needs to be evaluated. Batteries are also considered as potentially dangerous goods. Thus, there are guidelines and standards that specify safety criteria and tests for the batteries in order to be allowed for transportation and launch. Furthermore, the character of satellites’ missions determines their demand on batteries in terms of current rates, depth-of-discharge, and lifetime. Thus, these expectations are discussed. A market survey was also carried out to identify currently available commercial battery solutions and their parameters. This work summarizes the status, requirements, and the market situation of batteries for CubeSats.
Accordingly, many engineering designers have improved the wear friction performance of such
materials. Also, the use of polymers as reinforcements in their endeavors has been done to improve intrinsic
performance. Intrinsic properties played an important role in intrinsic polymer orientations, improving the
cohesion of some reinforcement while at the same time worsening those Effects Woven glass, carbon and amethyst
polymeric composites Inter-laminar shear strength and abrasion composites samples. Wear properties are
calculated using machine and testing machine in computer aided universal testing. Fracture of composites showed
surface modifications for Group bonding. The mechanical properties of basalt are better than glass reinforced
composites the result of the study confirms the applicability of basalt as a reinforcing agent in polymer composites.
Hybrid Mechanical Processes Ultrasonic assisted laser/water jet machining processes are used to solve machining
problems related to insulating ceramics such as ultrasonic assisted discharge machining, discharge milling,
electro-chemical discharge machining and powder hybrid discharge machining and discharge diamond grinding.
Processes can create complex patterns in spark discharges. An attempt has been made here to compare the convex
stability with the above cast iron and polymer impregnated mechanical properties
Small satellites have started to be produced as a solution to the volume, weight and cost problems of traditional satellites. CubeSat as a small nano satellite whose production is gaining speed today, has contributed to research in space and satellite with the Internet of Things. CubeSat networks that can communicate each other in space are created with the development of the Internet of Things. The performance of satellites is attempted to be maximized with small satellites. Small electronic components of these satellites increase the sensitivity to space radiation. At the same time, the performance of the satellite is affected. More durable materials are being developed to minimize these impacts. In addition,satellites are tested for their durability by irradiating the satellite to be sent with close amounts of space radiation before it is sent into space. Signals that are important in satellite communication are affected by atmospheric conditions. In this context, the effect of the ionosphere which is the layer of the atmosphere on signals is mentioned. A compilation article about CubeSat networks that bring the concept of the Internet of Space Things to the fore, the effects of space radiation on small satellites, the materials that can be used on small satellites to reduce this effect and the radiation tests conducted has been written to address the lack of local resources.
In this work, we evaluate the performance of a bidirectional teleportation protocol on an IBM Q Experience quantum processor of six or more qubits. Moreover, we analyze the viability in the implementation of the mentioned protocol in a configuration composed by two submerged nuclear submarines on opposite sides of the ocean and a satellite that generates and distributes entangled pairs, and transmits optical bits of disambiguation to those buoys located on the sea surface, and associated to those submerged submarines. The results of the implementations on a 16-qubits Melbourne IBM Q processor turned out to be extremely satisfactory with a low margin of error considering that this processor does not belong to the Premium family of IBM Q, which implies a high presence of decoherence and sensitivity to flip errors even in few-gate quantum circuits.
