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Genesis II (space Habitat)
''Genesis II'' is the second experimental space habitat designed and built by the private American firm Bigelow Aerospace, launched in 2007. As the second module sent into orbit by the company, this spacecraft builds on the data and experience gleaned from its previously orbited sister-ship ''Genesis I''. Like its sister-ship and other modules being designed by Bigelow Aerospace, this spacecraft is based on the NASA TransHab design, which provides increased interior volume and reduced launch diameter along with potentially reduced mass compared to traditional rigid structures. ''Genesis II'' was "retired" when its avionics systems stopped working after two and a half years, thus becoming a derelict spacecraft. , the spacecraft remains in orbit. Spacecraft history Similar to the process endured by Bigelow for ''Genesis I'', transporting ''Genesis II'' to Russia for launch was the end result of nearly a year of regulatory processes due to restrictions imposed by Internati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bigelow Aerospace
Bigelow Aerospace is an American aeronautics and outer space technology company which manufactures and develops expandable space station modules. Bigelow Aerospace was founded by Robert Bigelow in 1998, and is based in North Las Vegas, Nevada. It is funded in large part by the profit Bigelow gained through his ownership of the hotel chain, Budget Suites of America. By 2013, Bigelow had invested US$250 million in the company. Bigelow stated on a number of occasions that he was prepared to fund Bigelow Aerospace with about US$500 million through 2015 in order to achieve launch of full-scale hardware. Bigelow Aerospace announced in 2010 that they intended to create a modular set of space habitats for creating or expanding space stations but despite many concepts and models, never completed a working space station beyond two small prototypes that flew in 2006 and 2007. In March 2020, the company laid off all 88 of its employees due to the COVID-19 pandemic, and planned to rehire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antonov An-124
The Antonov An-124 Ruslan (; russian: Антонов Ан-124 Руслан, , Ruslan; NATO reporting name: Condor) is a large, strategic airlift, four-engined aircraft that was designed in the 1980s by the Antonov design bureau in the Ukrainian SSR, then part of the Soviet Union (USSR). The An-124 is the world's 2nd heaviest gross weight production cargo airplane and heaviest operating cargo aircraft, behind the destroyed one-off Antonov An-225 Mriya (a greatly enlarged design based on the An-124) and the Boeing 747-8. The An-124 remains the largest military transport aircraft in service. In 1971, design work commenced on the project, which was initially referred to as ''Izdeliye 400'' (''Product #400''), at the Antonov Design Bureau in response to a shortage in heavy airlift capability within the Military Transport Aviation Command (''Komandovaniye voyenno-transportnoy aviatsii'' or VTA) arm of the Soviet Air Forces. Two separate final assembly lines plants setup for the ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotation
Rotation, or spin, is the circular movement of an object around a '' central axis''. A two-dimensional rotating object has only one possible central axis and can rotate in either a clockwise or counterclockwise direction. A three-dimensional object has an infinite number of possible central axes and rotational directions. If the rotation axis passes internally through the body's own center of mass, then the body is said to be ''autorotating'' or '' spinning'', and the surface intersection of the axis can be called a '' pole''. A rotation around a completely external axis, e.g. the planet Earth around the Sun, is called ''revolving'' or ''orbiting'', typically when it is produced by gravity, and the ends of the rotation axis can be called the '' orbital poles''. Mathematics Mathematically, a rotation is a rigid body movement which, unlike a translation, keeps a point fixed. This definition applies to rotations within both two and three dimensions (in a plane and in spa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reaction Wheel
A reaction wheel (RW) is used primarily by spacecraft for three-axis attitude control, and does not require rockets or external applicators of torque. They provide a high pointing accuracy, and are particularly useful when the spacecraft must be rotated by very small amounts, such as keeping a telescope pointed at a star. A reaction wheel is sometimes operated as (and referred to as) a momentum wheel, by operating it at a constant (or near-constant) rotation speed, to provide a satellite with a large amount of stored angular momentum. Doing so alters the spacecraft's rotational dynamics so that disturbance torques perpendicular to one axis of the satellite (the axis parallel to the wheel's spin axis) do not result directly in spacecraft angular motion about the same axis as the disturbance torque; instead, they result in (generally smaller) angular motion ( precession) of that spacecraft axis about a perpendicular axis. This has the effect of tending to stabilize that spacecraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kosmos 1300
Kosmos 1300 also known as Tselina-D #30 is an electronic signals intelligence satellite launched by the Soviet Union on 8 August 1981 from Plesetsk Cosmodrome Site 32/1 on a Tsyklon-3 rocket. It is estimated to weigh two tons and have a lifetime of two months. It has been space debris since it stopped functioning. Potential collision On 18 September 2019 at 8:05:55 UTC it was projected to have a 5.6% chance of colliding with the Genesis II commercial space debris at a velocity of 14.6 km/s. The collision would take place over Awasa, Ethiopia. Bigelow Aerospace Bigelow Aerospace is an American aeronautics and outer space technology company which manufactures and develops expandable space station modules. Bigelow Aerospace was founded by Robert Bigelow in 1998, and is based in North Las Vegas, Nevada. ..., the company that made Genesis II, reported afterward that the US Air Force had notified them that there was no collision. References {{Orbital launches in 1981 Kos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derelict Satellite
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Air Force
The United States Air Force (USAF) is the Aerial warfare, air military branch, service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal Corps (United States Army), Signal Corps, the USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947. It is the second youngest branch of the United States Armed Forces and the fourth in order of precedence. The United States Air Force articulates its core missions as air supremacy, intelligence, surveillance, target acquisition, and reconnaissance, global integrated intelligence, surveillance and reconnaissance, airlift, rapid global mobility, Strategic bombing, global strike, and command and control. The United States Air Force is a military service branch organized within the United States Department of the Air Force, De ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attitude Control
Attitude control is the process of controlling the orientation of an aerospace vehicle with respect to an inertial frame of reference or another entity such as the celestial sphere, certain fields, and nearby objects, etc. Controlling vehicle attitude requires sensors to measure vehicle orientation, actuators to apply the torques needed to orient the vehicle to a desired attitude, and algorithms to command the actuators based on (1) sensor measurements of the current attitude and (2) specification of a desired attitude. The integrated field that studies the combination of sensors, actuators and algorithms is called guidance, navigation and control (GNC). Aircraft attitude control An aircraft's attitude is stabilized in three directions: '' yaw'', nose left or right about an axis running up and down; ''pitch'', nose up or down about an axis running from wing to wing; and ''roll'', rotation about an axis running from nose to tail. Elevators (moving flaps on the horizontal t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Eccentricity
In astrodynamics, the orbital eccentricity of an astronomical object is a dimensionless parameter that determines the amount by which its orbit around another body deviates from a perfect circle. A value of 0 is a circular orbit, values between 0 and 1 form an elliptic orbit, 1 is a parabolic escape orbit (or capture orbit), and greater than 1 is a hyperbola. The term derives its name from the parameters of conic sections, as every Kepler orbit is a conic section. It is normally used for the isolated two-body problem, but extensions exist for objects following a rosette orbit through the Galaxy. Definition In a two-body problem with inverse-square-law force, every orbit is a Kepler orbit. The eccentricity of this Kepler orbit is a non-negative number that defines its shape. The eccentricity may take the following values: * circular orbit: ''e'' = 0 * elliptic orbit: 0 < ''e'' < 1 * [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BA 330
The B330 (previously known as the Nautilus space complex module and BA 330) was an inflatable space habitat being privately developed by Bigelow Aerospace from 2010 until 2020. The design was evolved from NASA's TransHab habitat concept. B330 will have of internal volume, hence its numeric designation. The craft is intended to support zero-gravity research including scientific missions and manufacturing processes. Beyond its industrial and scientific purposes, however, it has potential as a destination for space tourism and a craft for missions destined for the Moon and Mars. Several test articles were built and tested in various conditions in ground test facilities, but no flight versions were built. Features Compared to their volume-mass ratio, expandable modules offer more living space than traditional rigid modules. For example, the pressurised volume of a B330 module is , compared to of the 15-tonne ISS Destiny module. Thus B330 offers 210% more habitable space, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairfax, Virginia
The City of Fairfax ( ), colloquially known as Fairfax City, Downtown Fairfax, Old Town Fairfax, Fairfax Courthouse, FFX, or simply Fairfax, is an independent city (United States), independent city in the Commonwealth (U.S. state), Commonwealth of Virginia in the United States. At the 2010 United States Census, 2010 census the population was 22,565, which had risen to 24,146 at the 2020 census. The City of Fairfax is an enclave surrounded by the separate political entity Fairfax County, Virginia, Fairfax County. Fairfax City also contains an exclave of Fairfax County, the Fairfax County Court Complex. The City of Fairfax and the area immediately surrounding the historical border of the City of Fairfax, collectively designated by Fairfax County as "Fairfax", comprise the county seat of Fairfax County. The city is part of the Washington metropolitan area as well as a part of Northern Virginia. The city is west of Washington, D.C. The Washington Metro's Orange Line (Washington Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
