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Prisma (satellite Project)
Prisma is a satellite project led by the Swedish Space Corporation (SSC) which consist of two satellites that fly in formation. Prisma is operated in collaboration with CNES, the French space agency, which provides the radiofrequency metrology system that enables the satellites to fly in close formation while autonomously avoiding collisions. It was launched, along with the PICARD spacecraft, on 15 June 2010 on a Dnepr launcher from Dombarovskiy Cosmodrome, near Yasny, Russia. Its primary objective is to test autonomous formation flying. A secondary objective was to flight test a new monopropellant thruster using ammonium dinitramide Ammonium dinitramide (ADN) is the ammonium salt of dinitraminic acid. ADN decomposes under heat to leave only nitrogen, oxygen, and water. The ions are the ammonium ion NH4+ and the dinitramide N(NO2)2−. It makes an excellent solid rocket o ... (ADN) propellant.K. Anflo, ''et al.,'' SSC09-II-4EXPANDING THE ADN-BASED MONO PROPELLANT THRUST ... [...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] |
Geocentric Orbit
A geocentric orbit or Earth orbit involves any object orbiting Earth, such as the Moon or artificial satellites. In 1997, NASA estimated there were approximately 2,465 artificial satellite payloads orbiting Earth and 6,216 pieces of space debris as tracked by the Goddard Space Flight Center. More than 16,291 objects previously launched have undergone orbital decay and entered Earth's atmosphere. A spacecraft enters orbit when its centripetal acceleration due to gravity is less than or equal to the centrifugal acceleration due to the horizontal component of its velocity. For a low Earth orbit, this velocity is about ; by contrast, the fastest crewed airplane speed ever achieved (excluding speeds achieved by deorbiting spacecraft) was in 1967 by the North American X-15. The energy required to reach Earth orbital velocity at an altitude of is about 36 MJ/kg, which is six times the energy needed merely to climb to the corresponding altitude. Spacecraft with a perigee belo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Programme Of Sweden
Space is the boundless three-dimensional extent in which objects and events have relative position and direction. In classical physics, physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. The concept of space is considered to be of fundamental importance to an understanding of the physical universe. However, disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework. Debates concerning the nature, essence and the mode of existence of space date back to antiquity; namely, to treatises like the ''Timaeus'' of Plato, or Socrates in his reflections on what the Greeks called ''khôra'' (i.e. "space"), or in the ''Physics'' of Aristotle (Book IV, Delta) in the definition of ''topos'' (i.e. place), or in the later "geometrical conception of place" as "spa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonium Dinitramide
Ammonium dinitramide (ADN) is the ammonium salt of dinitraminic acid. ADN decomposes under heat to leave only nitrogen, oxygen, and water. The ions are the ammonium ion NH4+ and the dinitramide N(NO2)2−. It makes an excellent solid rocket oxidizer with a slightly higher specific impulse than ammonium perchlorate and more importantly, does not leave corrosive hydrogen chloride fumes. This property is also of military interest because halogen-free smoke is harder to detect. It decomposes into low-molecular-mass gases so it contributes to higher performance without creating excessive temperatures if used in gun or rocket propellants. The salt is prone to detonation under high temperatures and shock more so than the perchlorate. The EURENCO Bofors company produced LMP-103S as a 1-to-1 substitute for hydrazine by dissolving 65% ammonium dinitramide, NH4N(NO2)2, in 35% water solution of methanol and ammonia. LMP-103S has 6% higher specific impulse and 30% higher impulse density t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space
Space is the boundless three-dimensional extent in which objects and events have relative position and direction. In classical physics, physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. The concept of space is considered to be of fundamental importance to an understanding of the physical universe. However, disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework. Debates concerning the nature, essence and the mode of existence of space date back to antiquity; namely, to treatises like the ''Timaeus'' of Plato, or Socrates in his reflections on what the Greeks called ''khôra'' (i.e. "space"), or in the ''Physics'' of Aristotle (Book IV, Delta) in the definition of ''topos'' (i.e. place), or in the later "geometrical conception of place" as "spac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yasny
Yasny (russian: Я́сный; masculine), Yasnaya (; feminine), or Yasnoye (; neuter) is the name of several types of inhabited localities in Russia, inhabited localities in Russia. ;Urban localities *Yasny, Orenburg Oblast, a town in Orenburg Oblast ;Rural localities *Yasny, Amur Oblast, a settlement in Oktyabrsky Rural Settlement of Zeysky District of Amur Oblast *Yasny, Arkhangelsk Oblast, a settlement in Shilegsky Selsoviet of Pinezhsky District of Arkhangelsk Oblast *Yasny, Republic of Bashkortostan, a village#Russia, village in Dmitriyevsky Selsoviet of Ufimsky District of the Republic of Bashkortostan *Yasny, Kursk Oblast, a ''khutor'' in Belyayevsky Selsoviet of Konyshyovsky District of Kursk Oblast *Yasny, Mari El Republic, a settlement in Solnechny Rural Okrug of Sovetsky District, Mari El Republic, Sovetsky District of the Mari El Republic *Yasny, Bagayevsky District, Rostov Oblast, a settlement in Manychskoye Rural Settlement of Bagayevsky District of Rostov Oblast *Ya ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PICARD (spacecraft)
PICARD is a satellite dedicated to the simultaneous measurement of the absolute total and spectral solar irradiance, the diameter and solar shape, and to the Sun's interior probing by the helioseismology method. These measurements obtained throughout the mission allow study of their variations as a function of solar activity. It launched, along with the Prisma spacecraft, on 15 June 2010 on a Dnepr launcher from Dombarovskiy Cosmodrome, near Yasny, Russia. The mission, originally planned for two years, ended on 4 April 2014. Objectives The objectives of the PICARD mission are to improve our knowledge of: * the functioning of our star through new observations, * the influence of the solar activity on the climate of the Earth. History The PICARD mission was named after the French astronomer of the 17th century Jean Picard (1620–1682) who achieved the first accurate measurements of the solar diameter. These measurements are especially important as they were made during a pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish Space Corporation
The Swedish Space Corporation (SSC) provides space subsystems, space and satellite operations, rocket and balloon systems including experiment equipment, launch services, aerospace engineering services as well as airborne maritime surveillance systems. Through its wholly owned subsidiaries ECAPS and NanoSpace, the SSC is also engaged in the development of propulsion systems and micromechanical systems for space applications. From its facility Esrange Space Center in Northern Sweden, the SSC launches sounding rockets and high-altitude balloons for research in the areas of microgravity, astrophysics, astronomy and atmospheric studies. One notable program during the late 1980s/early 1990s was a joint project with the Society of Japanese Aerospace Companies using SSC's MASER rocket to lift aloft various experiments requiring microgravity environments, at a low cost. This was during a period when U.S. Space Shuttle flights along with associated planned experiments were still being d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sun-synchronous Orbit
A Sun-synchronous orbit (SSO), also called a heliosynchronous orbit, is a nearly polar orbit around a planet, in which the satellite passes over any given point of the planet's surface at the same local mean solar time. More technically, it is an orbit arranged so that it precesses through one complete revolution each year, so it always maintains the same relationship with the Sun. Applications A Sun-synchronous orbit is useful for imaging, reconnaissance, and weather satellites, because every time that the satellite is overhead, the surface illumination angle on the planet underneath it is nearly the same. This consistent lighting is a useful characteristic for satellites that image the Earth's surface in visible or infrared wavelengths, such as weather and spy satellites, and for other remote-sensing satellites, such as those carrying ocean and atmospheric remote-sensing instruments that require sunlight. For example, a satellite in Sun-synchronous orbit might ascend acros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISC Kosmotras
The International Space Company Kosmotras or ISC Kosmotras (russian: ЗАО Международная космическая компания “Космотрас”) is a joint project, between Russia, Ukraine, and Kazakhstan, established in 1997. It developed and now operates a commercial expendable launch system using the Dnepr rocket. The Dnepr is a converted decommissioned SS-18 ICBM. ISC Kosmotras conducts Dnepr launches from Baikonur Cosmodrome and Yasny launch base in Dombarovskiy, Russia. In February 2015, following a year of strained relations as a result of a Russian military intervention into Ukraine, Russia announced that it would sever its "joint program with Ukraine to launch Dnepr rockets". ISC Kosmotras said it would honor its remaining launch contracts. Of the three launches planned for 2015, only one took place. As of 2016, it appears ISC Kosmotras no longer has customers, and thus whether the company is operational or not is uncertain. In May 2017, ISC Ko ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish National Space Board
The Swedish National Space Agency (SNSA, sv, Rymdstyrelsen) is a Government agency in Sweden operating under the Swedish Ministry of Education and Science. SNSA operates as a key component of the Swedish space programme, which is mostly carried out through international cooperation, and has included a sequence of satellite missions, both national ones and in cooperation with other nations. Furthermore, the agency distributes government grants to research and development, initiates research and development in space and remote sensing, and acts as the Swedish contact in international cooperative efforts. By the 2010s, it had a yearly budget of approximately 900 Mkr (100 M€), about 70% of which being used to support various programmes performed by the European Space Agency (ESA) that had been deemed to be of importance to Sweden. As of 2018, SNSA comprised a total of 21 permanent employees, the majority operating from its office in the Solna Municipality of Stockholm, Sweden. R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dombarovsky Site 370 of Orenburg Oblast, Russia
{{Disambiguation, geo ...
Dombarovsky (masculine), Dombarovskaya (feminine), or Dombarovskoye (neuter) may refer to: *Dombarovsky District, a district of Orenburg Oblast, Russia *Dombarovsky (air base), an interceptor aircraft base in Orenburg Oblast, Russia *Dombarovsky (rural locality), a rural locality (a settlement) in Dombarovsky District Dombarovsky District (russian: Домбаровский райо́н; kk, Дамбар ауданы, ) is an administrativeLaw #1370/276-IV-OZ and municipalLaw #2367/495-IV-OZ district (raion), one of the administrative divisions of Orenburg Oblas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
