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Veículo Lançador De Microssatélites
The VLM (''Veículo Lançador de Microssatélites'') is a proposed three-stage satellite launcher being developed by the Brazilian General Command for Aerospace Technology in collaboration with Germany. The project originated in 2008 as a simplified version of the VLS-1 rocket, using only the core stages. The first launch is currently planned for no earlier than 2023. A version based on the S-50 rocket engine is being developed, with the objective of launching satellites of up to 150 kg into equatorial circular orbits at 300 km altitude. VLM-1 description The VLM-1 vehicle is designed to deliver up to payloads to a 300 km equatorial circular orbit. VLM-1 is projected to have a total mass of , including 10 tons of propellant. The first two stages will use the S-50 solid fuel engine, with the third using the same S-44 engine as in the VS-40 sounding rocket. * Stage 1: S-50 rocket engine * Stage 2: S-50 rocket engine * Stage 3: S-44 rocket engine Launches will be from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Launch Vehicle
A launch vehicle or carrier rocket is a rocket designed to carry a payload (spacecraft or satellites) from the Earth's surface to outer space. Most launch vehicles operate from a launch pad, launch pads, supported by a missile launch control center, launch control center and systems such as vehicle assembly and fueling. Launch vehicles are engineered with advanced aerodynamics and technologies, which contribute to large operating costs. An orbital spaceflight, orbital launch vehicle must lift its payload at least to the boundary of space, approximately and accelerate it to a horizontal velocity of at least . Suborbital spaceflight, Suborbital vehicles launch their payloads to lower velocity or are launched at elevation angles greater than horizontal. Practical orbital launch vehicles are multistage rockets which use chemical propellants such as Solid-propellant rocket, solid fuel, liquid hydrogen, kerosene, liquid oxygen, or Hypergolic propellants. Launch vehicles are cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VS-40
The VS-40 (''Foguete Suborbital VS-40'') is a Brazilian sounding rocket using solid fuel, stabilized aerodynamically, distributed between the first stage S40TM (4,200 kg) engine and the second stage S44M (810 kg) engine. This configuration corresponds to the upper stages of the VLS-1 rocket. Flights * VS-40 PT-01 - "''Operação Santa Maria''" - 1993/04/02 - Qualifying flight for the S44 engine. 760 seconds in micro-gravity. * VS-40 PT-02 - "''Operação Livramento''" - 1998/03/21 - VAP-1 (Fokker) payload. * VS-40M / SHEFEX II - 2012/06/22 - ''SHEFEX ( Sharp Edge Flight Experiment) II'' payload. * VS-40M / V03 - "''Operação São Lourenço''" - 2015/11/13 - '' SARA - Satélite de Reentrada Atmosférica (Atmospheric Reentry Satellite) Suborbital 1'' - Failure (exploded on pad) * VS-40M - in development - HIFiRE 8 * VS-40M - Canceled - ''SARA Suborbital 2'' Characteristics *Length (mm) 6725 *Payload Mass (kg) 500 *Diameter (mm) 1000 *Total takeoff mass (kg) 6,737 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Launch Vehicles Of Brazil
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 "space ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rockets And Missiles
A rocket (from it, rocchetto, , bobbin/spool) is a vehicle that uses jet propulsion to Acceleration, accelerate without using the surrounding Atmosphere of Earth, air. A rocket engine produces thrust by Reaction (physics), reaction to exhaust expelled at high speed. Rocket engines work entirely from rocket propellant, propellant carried within the vehicle; therefore a rocket can fly in the vacuum of space. Rockets work more efficiently in a vacuum and incur a loss of thrust due to the opposing pressure of the atmosphere. Multistage rockets are capable of attaining escape velocity from Earth and therefore can achieve unlimited maximum altitude. Compared with Airbreathing jet engine, airbreathing engines, rockets are lightweight and powerful and capable of generating large accelerations. To control their flight, rockets rely on momentum, airfoils, Reaction control system, auxiliary reaction engines, gimballed thrust, Reaction wheel, momentum wheels, Thrust vectoring, deflection o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low Earth Orbit
A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never more than about one-third of the radius of Earth. The term ''LEO region'' is also used for the area of space below an altitude of (about one-third of Earth's radius). Objects in orbits that pass through this zone, even if they have an apogee further out or are sub-orbital, are carefully tracked since they present a collision risk to the many LEO satellites. All crewed space stations to date have been within LEO. From 1968 to 1972, the Apollo program's lunar missions sent humans beyond LEO. Since the end of the Apollo program, no human spaceflights have been beyond LEO. Defining characteristics A wide variety of sources define LEO in terms of altitude. The altitude of an object in an elliptic orbit can vary significantly along the orbit. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about one second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, ''Standard-Frequency and Time-Signal Emissions'', in 1963, but the official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) were not adopted until 1967. The system has been adjusted several times, including a brief period during which the time-coordination radio signals broadcast both UTC and "Stepped Atomic Time (SAT)" before a new UTC was adopted in 1970 and implemented in 1972. This change also a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sharp Edge Flight Experiment
SHEFEX (Sharp Edge Flight Experiment), is an experiment conducted by the German Aerospace Center (DLR), for the development of some new, cheaper and safer design principles for space capsules, hypersonic vehicles and space planes with re-entry capability in the atmosphere and their integration into a complete system. DLR explained the objectives of SHEFEX: The aim of the research is a space plane that is usable for experiments under microgravity from 2020 on. It is set to finish with a space plane project named REX Freeflyer (REX for Returnable experiment, German: Rückkehrexperiment). During re-entry of spacecraft into the earth's atmosphere, the high velocity of the spacecraft together with friction and displacement of air molecules leads to temperatures of over 2000 °C. In order to avoid catastrophic failure upon re-entry due to excess heat, current spacecraft mostly rely on very expensive and sometimes fragile materials for their heat shields. First spacecraft with s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low Earth Orbit
A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never more than about one-third of the radius of Earth. The term ''LEO region'' is also used for the area of space below an altitude of (about one-third of Earth's radius). Objects in orbits that pass through this zone, even if they have an apogee further out or are sub-orbital, are carefully tracked since they present a collision risk to the many LEO satellites. All crewed space stations to date have been within LEO. From 1968 to 1972, the Apollo program's lunar missions sent humans beyond LEO. Since the end of the Apollo program, no human spaceflights have been beyond LEO. Defining characteristics A wide variety of sources define LEO in terms of altitude. The altitude of an object in an elliptic orbit can vary significantly along the orbit. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Space Agency
The German Aerospace Center (german: Deutsches Zentrum für Luft- und Raumfahrt e.V., abbreviated DLR, literally ''German Center for Air- and Space-flight'') is the national center for aerospace, energy and transportation research of Germany, founded in 1969. It is headquartered in Cologne with 35 locations throughout Germany. The DLR is engaged in a wide range of research and development projects in national and international partnerships. DLR also acts as the German space agency and is responsible for planning and implementing the German space programme on behalf of the German federal government. As a project management agency, DLR coordinates and answers the technical and organisational implementation of projects funded by a number of German federal ministries. As of 2020, the German Aerospace Center had a national budget of €1.261 billion. Overview DLR has approximately 10.000 employees at 30 locations in Germany. Institutes and facilities are spread over 13 sites, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcântara Launch Center
Alcantara, Alcântara (Portuguese), Alcántara (Spanish), Alcàntara, Alcàntera, El-Qantarah and (El) Kantara are all transliterations of the Arabic word ''al qantara'' (القنطرة), meaning "the bridge". Alcantara may refer to: People * Alcantara (surname) Places Algeria * El Kantara, town and commune in Biskra province * El Kantara District, in Biskra province Brazil * Alcântara, Maranhão, city in the state of Maranhão ** Alcântara Launch Center, Maranhão, satellite launch center * Alcântara River, Rio de Janeiro state * Barra d'Alcântara, municipality in the state of Piauí * Dom Pedro de Alcântara, municipality in the state Rio Grande do Sul * São Pedro de Alcântara, Santa Catarina, municipality Chile * The area near Alcántara metro station in northeastern Santiago Cyprus * Kantara Castle, in the Kyrenia mountains Egypt * El-Qantarah el-Sharqiyya, city in the governorate of Shamal Sina, on the eastern side of the Suez Canal Italy * Alcantara (river) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
