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4MV
The 4MV planetary probe (short for 4th-generation Mars-Venus probe) is a designation for a common design used for Soviet unmanned probes to Mars and Venus. It was an incremental improvement of earlier 3MV probes and was used for Mars missions 2 to 7 and Venera missions 9 to 16. The same base design was used for some earth-orbiting space observatories. Design The spacecraft bus has a height of and a solar panel span of . The central section of the bus has a diameter of about and contained propellant. The main engine (KTDU-425) is encircled by a conical instrument compartment with the diameter of at the base. While Mars 2,3 and Kosmos 419 used the KTDU-425, 4MV buses after 1971 used the KTDU-425A). Variants *Mars M-71, 3MS:Kosmos 419 (M-71, 3MS No.170), Mars 2 (M-71 No.171), Mars 3 (M-71 No.172) *Prognoz: Prognoz 1 to 9, Intercosmos 23 *Mars M-73, 3MS, 3MP: Mars 4 (M-73, 3MS No.52S), Mars 5 (M-73, 3MS No.53S), Mars 6 (M-73, 3MP No.50P), Mars 7 (M-73, 3MP No.51P) *Venera 4V-1: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KTDU-425
The KTDU-425 was a former Soviet liquid fuelled engine designed Aleksei Isaev of the Isayev Design Bureau. It was mainly used on the 4MV bus, which employed it as its main propulsion system. The first version which was the KTDU-425 (11D425), which had a thrust of 18.85kN was first used in 1971 for Mars-2, Mars-3 as well as the failed M-71C (Kosmos 419) probe. This was soon replaced by the KTDU-425A, which had a thrust of 18.89kN. This version was employed on the remaining 4MV and 5VK The 5VK planetary probe (short for 5th-generation Venus-Comet probe) is a designation for a common design used for Soviet unmanned probes to comet 1P/Halley and Venus. It was an incremental improvement of earlier 4MV probes used for Mars and Venu ... probes built, as well as Phobos 1 and 2. Variants * KTDU-425 (11D425) - First version of the KTDU-425. Employed in 1971 on M-71 Probes. Thrust: 18.85Kn, Specific Impulse: 312s, Burn time: 520s.{{Cite web , title=Spacecraft-propulsion blocks fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granat
The International Astrophysical Observatory "GRANAT" (usually known as Granat; russian: Гранат, lit. ''pomegranate''), was a Soviet (later Russian) space observatory developed in collaboration with France, Denmark and Bulgaria. It was launched on 1 December 1989 aboard a Proton rocket and placed in a highly eccentric four-day orbit, of which three were devoted to observations. It operated for almost nine years. In September 1994, after nearly five years of directed observations, the gas supply for its attitude control was exhausted and the observatory was placed in a non-directed survey mode. Transmissions finally ceased on 27 November 1998. With seven different instruments on board, Granat was designed to observe the universe at energies ranging from X-ray to gamma ray. Its main instrument, SIGMA, was capable of imaging both hard X-ray and soft gamma-ray sources. The PHEBUS instrument was meant to study gamma-ray bursts and other transient X-Ray sources. Other experiments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars 2
The Mars 2 was an uncrewed space probe of the Mars program, a series of uncrewed Mars landers and orbiters launched by the Soviet Union beginning 19 May 1971. The Mars 2 and Mars 3 missions consisted of identical spacecraft, each with an orbiter and an attached lander. The orbiter is identical to the Venera 9 bus. The type of bus/orbiter is the 4MV. They were launched by a Proton-K heavy launch vehicle with a Blok D upper stage. The lander of Mars 2 became the first human-made object to reach the surface of Mars, although the landing system failed and the lander was lost. Overview * Launch Date/Time: ** Mars 2: 19 May 1971 at 16:22:44 UTC * Launch mass (including fuel): ** Combined: ** Orbiter: ** Lander: * On-orbit dry mass: * Dimensions: tall, across ( across with solar panels deployed) Launch On 19 May 1971, the Proton-K heavy launch vehicle launched the probe from Baikonur Cosmodrome. After the first stage separated the second stage was ignited. The third stage engi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venera 10
Venera 10 (russian: Венера-10 meaning ''Venus 10''), or 4V-1 No. 661, was a Soviet uncrewed space mission to Venus. It consisted of an orbiter and a lander. It was launched on June 14, 1975, 03:00:31 UTC and had a mass of 5033 kg (11096 lb). Orbiter When the mission launched, the Soviet Union only disclosed that the mission's objective was to explore Venus and the surrounding space. Western sources speculated that the spacecraft contained a lander. The orbiter entered Venus orbit on October 23, 1975. Its mission was to serve as a communications relay for the lander and to explore cloud layers and atmospheric parameters with several instruments and experiments: * 1.6–2.8 μm IR Spectrometer * 8–28 μm IR Radiometer * 352 nm UV Photometer * 2 Photopolarimeters (335–800 nm) * 300–800 nm Spectrometer * Lyman-α H/D Spectrometer * Bistatic radar mapping * CM, DM radio occultations * Triaxial Magnetometer * 345–380 nm UV Camera * 355 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars 6
Mars 6 (), also known as 3MP No.50P was a Soviet spacecraft launched to explore Mars. A 3MP bus spacecraft launched as part of the Mars program, it consisted of a lander, and a coast stage with instruments to study Mars as it flew past. Spacecraft The Mars 6 spacecraft carried an array of instruments to study Mars. The lander was equipped with a thermometer and barometer to determine the surface conditions, an accelerometer and radio altimeter for descent, and instruments to analyse the surface material including a mass spectrometer. The coast stage, or bus, carried a magnetometer, plasma traps, cosmic ray and micrometeoroid detectors, and an instrument to study proton and electron fluxes from the Sun. Built by Lavochkin, Mars 6 was the first of two 3MP spacecraft launched to Mars in 1973 and was followed by Mars 7. Two orbiters, Mars 4 and Mars 5, were launched earlier in the 1973 Mars launch window and were expected to relay data for the two landers. However, Mars 4 failed to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmos 419
Kosmos 419 (russian: Космос 419 meaning ''Cosmos 419''), also known as 3MS No.170 was a failed Soviet spacecraft intended to visit Mars. The spacecraft was launched on 10 May 1971, however due to an upper stage malfunction it failed to depart low Earth orbit. Background In 1971, Mars was at its closest to Earth since 1956 and in May of that year both the Soviet Union and the United States made new attempts to reach the Red Planet. Kosmos 419 was intended to overtake the United States probes, Mariner 8 and Mariner 9, in the aim of becoming the first Mars orbiter. As it was, Mariner 8 was lost in a launch failure two days before Kosmos 419 was launched, and Mariner 9 went on to become the first spacecraft to orbit Mars. Launch Kosmos 419 was one of three ''Mars'' spacecraft launched by the Soviet Union in 1971, the others being Mars 2 and Mars 3; launched days after Kosmos 419. Unlike the 4M spacecraft, Mars 2 and 3, Kosmos 419 was a 3MS spacecraft which consisted only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars 7
Mars 7 (), also known as 3MP No.51P was a Soviet Union, Soviet spacecraft launched in 1973 to explore Mars. A 3MP bus spacecraft which comprised the final mission of the Mars programme, it consisted of a Lander (spacecraft), lander and a coast stage with instruments to study Mars as it Flyby (spaceflight), flew past. Due to a malfunction, the lander failed to perform a maneuver necessary to enter the Martian atmosphere, missing the planet and remaining in heliocentric orbit along with the coast stage. Spacecraft Mars 7 spacecraft carried an array of instruments to study Mars. The lander was equipped with a thermometer and barometer to determine the surface conditions, an accelerometer and radio altimeter for descent, and instruments to analyse the surface material including a mass spectrometer. The coast stage, or bus, carried a magnetometer, plasma traps, cosmic ray and micrometeoroid detectors, stereo antennae, and an instrument to study proton and electron fluxes from the Sun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venera 9
Venera 9 (russian: Венера-9, lit=Venus-9), manufacturer's designation: 4V-1 No. 660, was a Soviet uncrewed space mission to Venus. It consisted of an orbiter and a lander. It was launched on June 8, 1975, at 02:38:00 UTC and had a mass of . The orbiter was the first spacecraft to orbit Venus, while the lander was the first to return images from the surface of another planet. Orbiter The orbiter entered Venus orbit on October 20, 1975. Its mission was to act as a communications relay for the lander and to explore cloud layers and atmospheric parameters with several instruments and experiments. It performed 17 survey missions from October 26, 1975, to December 25, 1975. The orbiter consisted of a cylinder with two solar panel wings and a high gain parabolic antenna attached to the curved surface. A bell-shaped unit holding propulsion systems was attached to the bottom of the cylinder, and mounted on top was a sphere which held the lander. Orbiter design The instru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prognoz (satellite)
Prognoz, also known as SO (Solar Object, first three satellites), SO-M (SO-modified, next seven satellites) and SO-M2 (last two satellites, also known as Interball) was a Soviet Union, Soviet scientific research satellite programme. Twelve Prognoz satellites were launched between 14 April 1972 and 29 August 1996, by Molniya-M carrier rockets. The satellites were placed in High Earth orbits. First ten Prognoz spacescrafts were launched from Baikonur Cosmodrome Site 31, Site 31/6 at the Baikonur Cosmodrome and last two from Plesetsk Cosmodrome Site 43, Site 43/3 at the Plesetsk Cosmodrome. The satellites were primarily used for Sun, Solar research, however the later satellites were used for other research, including research into the Big Bang theory, and Earth's magnetosphere.Encyclopedia Astronautica - Prognoz The ten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars 3
Mars 3 was a robotic space probe of the Soviet Mars program, launched May 28, 1971, nine days after its twin spacecraft Mars 2. The probes were identical robotic spacecraft launched by Proton-K rockets with a Blok D upper stage, each consisting of an orbiter and an attached lander. After the Mars 2 lander crashed on the Martian surface, the Mars 3 lander became the first spacecraft to attain a soft landing on Mars, on December 2, 1971. It failed 110 seconds after landing, having transmitted only a gray image with no details. The Mars 2 orbiter and Mars 3 orbiter continued to circle Mars and transmit images back to Earth for another eight months. Overview * Launch Date/Time: ** Mars 3: May 28, 1971 at 15:26:30 UTC * Launch mass (including fuel): ** Combined: ** Orbiter: ** Lander: * On-orbit dry mass: * Dimensions: tall, across ( across with solar panels deployed) Orbiter The primary purpose of the 4M-V orbiter was to study the topography of the Martian surface; analyze ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venera 12
The Venera 12 (russian: Венера-12 meaning Venus 12) was an uncrewed Soviet space mission designed to explore the planet Venus. Venera 12 was launched on 14 September 1978 at 02:25:13 UTC. After separating from its flight platform on 19 December 1978, the Venera 12 lander entered the Venus atmosphere two days later at 11.2 km/s. During its descent, the lander employed aerodynamic braking followed by parachute braking, ending with atmospheric braking. After a nearly one-hour descent, a soft landing was made at 06:30 Moscow time (0330 UT) on 21 December. Touchdown speed was 7–8 m/s; landing coordinates are . Continuing for about 110 minutes after touchdown, the lander transmitted data to the flight platform for about 110 minutes until the flight platform, which remained in a heliocentric orbit, moved out of range. Venera 11 and 12 carried identical instruments. Flight platform The Venera 12 flight platform carried solar wind detectors, ionosphere electron instr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venera 11
The Venera 11 (russian: Венера-11 meaning ''Venus 11'') was a Soviet uncrewed space mission which was part of the Venera program to explore the planet Venus. Venera 11 was launched on 9 September 1978 at 03:25:39 UTC. Separating from its flight platform on December 23, 1978 the lander entered the Venus atmosphere two days later on December 25 at 11.2 km/s. During the descent, it employed aerodynamic braking followed by parachute braking and ending with atmospheric braking. It made a soft landing on the surface at 06:24 Moscow Time (03:24 UT) on 25 December after a descent time of approximately 1 hour. The touchdown speed was 7 to 8 m/s. Information was transmitted to the flight platform for retransmittal to earth until it moved out of range 95 minutes after touchdown. Landing coordinates are . Flight platform After ejection of the lander probe, the flight platform continued on past Venus in a heliocentric orbit. Near encounter with Venus occurred on December 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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