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Aalto-1
Aalto-1 is a Finnish research nanosatellite, created by students of Aalto University. Based on the CubeSat architecture, it was originally scheduled to be launched in 2013, it was launched on 23 June 2017. It is Finland's first student satellite project and indigenously-produced satellite. As of 2021, the satellite is operational. Project history The Aalto-1 project began in 2010 with a feasibility study, which was conducted as part of a university course on space technology. The study was followed by the publication of a preliminary design in 2011. A critical design review (CDR) of the satellite was conducted in 2012. In all, over 80 students of Aalto University's School of Electrical Engineering were involved in the project. Design The solar-powered CubeSat - based satellite will weigh approximately , and has 3 main payloads: a miniature Fabry-Pérot spectrometer, designed by VTT Technical Research Centre, a RADMON-radiation detector developed by University of Helsink ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aalto-1 Nanosatellite
Aalto-1 is a Finnish research nanosatellite, created by students of Aalto University. Based on the CubeSat architecture, it was originally scheduled to be launched in 2013, it was launched on 23 June 2017. It is Finland's first student satellite project and indigenously-produced satellite. As of 2021, the satellite is operational. Project history The Aalto-1 project began in 2010 with a feasibility study, which was conducted as part of a university course on space technology. The study was followed by the publication of a preliminary design in 2011. A critical design review (CDR) of the satellite was conducted in 2012. In all, over 80 students of Aalto University's School of Electrical Engineering were involved in the project. Design The solar-powered CubeSat - based satellite will weigh approximately , and has 3 main payloads: a miniature Fabry-Pérot spectrometer, designed by VTT Technical Research Centre, a RADMON-radiation detector developed by University of Helsink ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Sail
An electric sail (also known as an electric solar wind sail or an E-sail) is a proposed form of spacecraft propulsion using the dynamic pressure of the solar wind as a source of thrust. It creates a "virtual" sail by using small wires to form an electric field that deflects solar wind protons and extracts their momentum. The idea was first conceptualised by Pekka Janhunen in 2006 at the Finnish Meteorological Institute. Principles of operation and design The electric sail consists of a number of thin, long and conducting tethers which are kept in a high positive potential by an onboard electron gun. The positively charged tethers deflect solar wind protons, thus extracting momentum from them. Simultaneously they attract electrons from the solar wind plasma, producing an electron current. The electron gun compensates for the arriving electric current. One way to deploy the tethers is to rotate the spacecraft, using centrifugal force to keep them stretched. By fine-tuning the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aalto Nanosatellite Series
Aalto is a Finnish surname meaning "wave". Notable people with the surname include: * Aino Aalto (1894–1949), Finnish architect and designer * Alec Aalto (1942–2018), Finnish diplomat * Alvar Aalto (1898–1976), Finnish architect and designer * Antti Aalto (born 1975), Finnish ice hockey player * Artturi Aalto (1876–1937), Finnish politician * Arvo Aalto (born 1932), Finnish politician * Ashprihanal Pekka Aalto (born 1970), Finnish runner * Einari Aalto (1926–1985), Finnish swimmer * Elissa Aalto (1922–1994), Finnish architect * Henri Aalto (born 1989), Finnish football player * Iiro Aalto (born 1977), Finnish footballer * Ilmari Aalto (1891–1934), Finnish painter * Jorma Aalto (born 1957), Finnish skier * Jussi Aalto (born 1983), Finnish footballer * Jyri Aalto (born 1969), Finnish badminton player * Kalle Aalto (1884–1950), Finnish politician * Kathryn Aalto, American landscape designer * Marja-Sisko Aalto (born 1954) Finnish minister of the Evangelical Luthe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PSLV-C38
PSLV-C38 was the 40th mission of the Indian Polar Satellite Launch Vehicle (PSLV) program and its 17th mission in the XL configuration. PSLV-C38 successfully carried and deployed 31 satellites in Sun-synchronous orbit. It was launched on 23 June 2017 by the Indian Space Research Organisation (ISRO) from the Satish Dhawan Space Centre at Sriharikota, Andhra Pradesh. Payload and other parameters PSLV-C38 carried the Indian mapping satellite Cartosat-2E as its main payload that weighed . 30 smaller satellites were carried as secondary payload, among them the Indian university NIUSAT monitoring satellite, Japanese CE-SAT1 technology demonstrator, Austrian AT-03 Pegasus research satellite and American CICERO-6 weather satellite. Satellites of Belgium, Chile, the Czech Republic VZLUSat-1, Finland, France, Germany, Italy, Latvia, Lithuania, Slovakia SkCube, and the United Kingdom were also launched. The NIUSAT satellite, weighing around , was prepared as a collaborative work by ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technology Demonstration
A technology demonstration (or tech demo), also known as demonstrator model, is a prototype, rough example or an otherwise incomplete version of a conceivable product or future system, put together as proof of concept with the primary purpose of showcasing the possible applications, feasibility, performance and method of an idea for a new technology. They can be used as demonstrations to the investors, partners, journalists or even to potential customers in order to convince them of the viability of the chosen approach, or to test them on ordinary users. Computers and gaming Technology demonstrations are often used in the computer industry, emerging as an important tool in response to short development cycles, in both software and hardware development. * Computer game developers use tech demos to rouse and maintain interest to titles still in development (because game engines are usually ready before the art is finished) and to ensure functionality by early testing. Short segmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spectrometer
A spectrometer () is a scientific instrument used to separate and measure spectral components of a physical phenomenon. Spectrometer is a broad term often used to describe instruments that measure a continuous variable of a phenomenon where the spectral components are somehow mixed. In visible light a spectrometer can separate white light and measure individual narrow bands of color, called a spectrum. A mass spectrometer measures the spectrum of the masses of the atoms or molecules present in a gas. The first spectrometers were used to split light into an array of separate colors. Spectrometers were developed in early studies of physics, astronomy, and chemistry. The capability of spectroscopy to determine chemical composition drove its advancement and continues to be one of its primary uses. Spectrometers are used in astronomy to analyze the chemical composition of stars and planets, and spectrometers gather data on the origin of the universe. Examples of spectrometers are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VTT Technical Research Centre Of Finland
VTT Technical Research Centre of Finland Ltd is a state-owned and controlled non-profit limited liability company. VTT is the largest research and technology company and research centre conducting applied research in Finland. It provides research and innovation services and information for domestic and international customers and partners, both in private and public sectors. VTT is part of Finland's innovation system and operates under the mandate of the Ministry of Economic Affairs and Employment. History Technical Research Institute of Finland (VTL) (1942–1972) VTT – then called the Technical Research Institute of Finland (VTL) – was founded on 16 January 1942 by President Risto Ryti’s decree. Its mission was to engage in technical research for the benefit of science and society as a whole. Construction started immediately, and the research institute was completed in autumn 1943. The volume of the building was 20,000 cubic metres, and seven of VTT’s first ten labor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Helsinki
The University of Helsinki ( fi, Helsingin yliopisto, sv, Helsingfors universitet, abbreviated UH) is a public research university located in Helsinki, Finland since 1829, but founded in the city of Turku (in Swedish ''Åbo'') in 1640 as the Royal Academy of Åbo, at that time part of the Swedish Empire. It is the oldest and largest university in Finland with the widest range of disciplines available. In 2020, around 31,600 students were enrolled in the degree programs of the university spread across 11 faculties and 11 research institutes. As of 1 August 2005, the university complies with the harmonized structure of the Europe-wide Bologna Process and offers bachelor, master, licenciate, and doctoral degrees. Admission to degree programmes is usually determined by entrance examinations, in the case of bachelor's degrees, and by prior degree results, in the case of master and postgraduate degrees. Entrance is particularly selective (circa 15% of the yearly applicants are admi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Turku
sv, Åbo universitet , latin_name = Universitas Aboensis , image_name = University of Turku.svg , motto = ''Vapaan kansan lahja vapaalle tieteelle'' , established = 1920 , type = Public University , endowment = , administrative_staff = 3,412 , rector = Jukka Kola , students = 20,768 , undergrad = 8,247 , postgrad = 6,244 , doctoral = 1,984 , city = Turku , country = Finland , campus = Urban , free_label = , free = , colors = , colours = , mascot = , affiliations = Coimbra Group, UArctic , website Official Website (in English) , motto_lang = fin , mottoeng = The gift of a free nation to free science ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmospheric Entry
Atmospheric entry is the movement of an object from outer space into and through the gases of an atmosphere of a planet, dwarf planet, or natural satellite. There are two main types of atmospheric entry: ''uncontrolled entry'', such as the entry of astronomical objects, space debris, or bolides; and ''controlled entry'' (or ''reentry'') of a spacecraft capable of being navigated or following a predetermined course. Technologies and procedures allowing the controlled atmospheric ''entry, descent, and landing'' of spacecraft are collectively termed as ''EDL''. Objects entering an atmosphere experience atmospheric drag, which puts mechanical stress on the object, and aerodynamic heating—caused mostly by compression of the air in front of the object, but also by drag. These forces can cause loss of mass (ablation) or even complete disintegration of smaller objects, and objects with lower compressive strength can explode. Crewed space vehicles must be slowed to subsonic speed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Design Review (U
A design review is a milestone within a product development process whereby a design is evaluated against its requirements in order to verify the outcomes of previous activities and identify issues before committing to—and, if need be, to re-prioritise—further work. The ultimate design review, if successful, therefore triggers the product launch or product release. The conduct of design reviews is compulsory as part of design controls, when developing products in certain regulated contexts such as medical devices. By definition, a review must include persons who are external to the design team. Contents of a design review In order to evaluate a design against its requirements, a number of means may be considered, such as: *Physical tests. *Engineering simulations. *Examinations (Walk-through). Timing of design reviews Most formalised systems engineering processes recognise that the cost of correcting a fault increases as it progresses through the development process. Addi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Junk
Space debris (also known as space junk, space pollution, space waste, space trash, or space garbage) are defunct human-made objects in space—principally in Earth orbit—which no longer serve a useful function. These include derelict spacecraft—nonfunctional spacecraft and abandoned launch vehicle stages—mission-related debris, and particularly numerous in Earth orbit, fragmentation debris from the breakup of derelict rocket bodies and spacecraft. In addition to derelict human-made objects left in orbit, other examples of space debris include fragments from their disintegration, erosion and collisions or even paint flecks, solidified liquids expelled from spacecraft, and unburned particles from solid rocket motors. Space debris represents a risk to spacecraft. Space debris is typically a negative externality—it creates an external cost on others from the initial action to launch or use a spacecraft in near-Earth orbit—a cost that is typically not taken into account no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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