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SpaceShip Two
The Scaled Composites Model 339 SpaceShipTwo (SS2) is an air-launched suborbital spaceplane type designed for space tourism. It is manufactured by The Spaceship Company, a California-based company owned by Virgin Galactic. SpaceShipTwo is carried to its launch altitude by a Scaled Composites White Knight Two, before being released to fly on into the upper atmosphere powered by its rocket engine. It then glides back to Earth and performs a conventional runway landing. The spaceship was officially unveiled to the public on 7 December 2009 at the Mojave Air and Space Port in California. On 29 April 2013, after nearly three years of unpowered testing, the first one constructed successfully performed its first powered test flight. Virgin Galactic plans to operate a fleet of five SpaceShipTwo spaceplanes in a private passenger-carrying service and has been taking bookings for some time, with a suborbital flight carrying an updated ticket price of US$250,000. The spaceplane could al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mother Ship
A mother ship, mothership or mother-ship is a large vehicle that leads, serves, or carries other smaller vehicles. A mother ship may be a maritime ship, aircraft, or spacecraft. Examples include bombers converted to carry experimental aircraft to altitudes where they can conduct their research (such as the B-52 carrying the X-15), or ships that carry small submarines to an area of ocean to be explored (such as the Atlantis II carrying the Alvin). A mother ship may also be used to recover smaller craft, or go its own way after releasing them. A smaller vessel serving or caring for ''larger'' craft is usually called a tender. Etymology In many Asian languages, such as Chinese, Japanese, Korean and Indonesian, the word ''mothership'' (, ja, 母艦, ko, 모함, id, Kapal induk, literally "mother" + "(war)ship") typically refers to an aircraft carrier, which is translated as "aircraft/aviation mothership" (, ja, 航空母艦, ko, 항공모함, ms, Kapal induk pesawa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VSS Enterprise Crash
VSS may refer to: Organizations * Vegetarian Society (Singapore) * Vernon Secondary School, a high school in Vernon, B.C. * Veronis Suhler Stevenson, media company * Voluntary Sports Societies of the Soviet Union * FC VSS Košice, a Slovak football club Science and technology * Variable structure system, a class of discontinuous nonlinear systems * Vehicle speed sensor, in automobiles * Verifiable secret sharing, a cryptographic primitive * Video surveillance system, cameras and other systems combined together to allow remote video monitoring * Visual SourceSafe, a source control software system produced by Microsoft * Vital signs stable, in List of medical abbreviations: V * Volatile suspended solids, a water quality measure * Voltage symmetrization system in power engineering * Volume Snapshot Service, or Shadow Copy, in Microsoft Windows * Visual Surround Sound / Visual Surround System : when surround sound is created and perceived with less sources than real surround sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermosphere
The thermosphere is the layer in the Earth's atmosphere directly above the mesosphere and below the exosphere. Within this layer of the atmosphere, ultraviolet radiation causes photoionization/photodissociation of molecules, creating ions; the thermosphere thus constitutes the larger part of the ionosphere. Taking its name from the Greek θερμός (pronounced ''thermos'') meaning heat, the thermosphere begins at about 80 km (50 mi) above sea level. At these high altitudes, the residual atmospheric gases sort into strata according to molecular mass (see turbosphere). Thermospheric temperatures increase with altitude due to absorption of highly energetic solar radiation. Temperatures are highly dependent on solar activity, and can rise to or more. Radiation causes the atmospheric particles in this layer to become electrically charged, enabling radio waves to be refracted and thus be received beyond the horizon. In the exosphere, beginning at about 600 km (375&n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apsis
An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any elliptic orbit. The name for each apsis is created from the prefixes ''ap-'', ''apo-'' (), or ''peri-'' (), each referring to the farthest and closest point to the primary body the affixing necessary suffix that describes the primary body in the orbit. In this case, the suffix for Earth is ''-gee'', so the apsides' names are ''apogee'' and ''perigee''. For the Sun, its suffix is ''-helion'', so the names are ''aphelion'' and ''perihelion''. According to Newton's laws of motion, all periodic orbits are ellipses. The barycenter of the two bodies may lie well within the bigger body—e.g., the Earth–Moon barycenter is about 75% of the way from Earth's center to its surface. If, compared to the larger mass, the smaller mass is negligible (e.g., f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspect Ratio (aerodynamics)
In aeronautics, the aspect ratio of a wing is the ratio of its span to its mean chord. It is equal to the square of the wingspan divided by the wing area. Thus, a long, narrow wing has a high aspect ratio, whereas a short, wide wing has a low aspect ratio.Kermode, A.C. (1972), ''Mechanics of Flight'', Chapter 3, (p.103, eighth edition), Pitman Publishing Limited, London Aspect ratio and other features of the planform are often used to predict the aerodynamic efficiency of a wing because the lift-to-drag ratio increases with aspect ratio, improving the fuel economy in powered airplanes and the gliding angle of sailplanes. Definition The aspect ratio \text is the ratio of the square of the wingspan b to the projected wing area S, which is equal to the ratio of the wingspan b to the standard mean chord \text: \text \equiv \frac = \frac Mechanism As a useful simplification, an airplane in flight can be imagined to affect a circular cylinder of air with a diameter equal to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burt Rutan
Elbert Leander "Burt" Rutan (; born June 17, 1943) is a retired American aerospace engineer and entrepreneur noted for his originality in designing light, strong, unusual-looking, and energy-efficient air and space craft. He designed the record-breaking Voyager, which in 1986 was the first plane to fly around the world without stopping or refueling, and the Virgin Atlantic GlobalFlyer, which in 2006 set the world record for the fastest (342 mph/551 km/h in 67 hours) and longest (25,766 miles/41,466 km) nonstop non-refueled circumnavigation flight in history. In 2004, Rutan's sub-orbital spaceplane design SpaceShipOne became the first privately funded spacecraft to enter the realm of space, winning the Ansari X-Prize that year for achieving the feat twice within a two-week period. With his VariEze and Long-EZ designs, which first flew in 1975 and 1979 respectively, Rutan is responsible for helping popularize both the canard configuration and the use of moldless c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mojave Aerospace Ventures
Mojave Aerospace Ventures (MAV) is a company founded by Paul Allen and Burt Rutan to handle the commercial spinoffs from the Tier One project. It owns the intellectual property arising from Tier One, and it is in turn owned by Allen (the majority shareholder) and Rutan's Scaled Composites. In 2004, it signed a deal with Virgin Galactic to develop the Virgin SpaceShip, a suborbital spacecraft, for space tourism. Virgin Group and Scaled Composites have subsequently formed a joint venture, The Spaceship Company, to manufacture the spacecraft. Company The structure of Mojave Aerospace Ventures appears to be the basis of the deal between Allen and Rutan for the funding of Tier One. The company owns all the intellectual property of the Tier One project, such as patents, and so controls commercial exploitation. Allen, the sole source of funding for Tier One, is the majority owner. Rutan, having developed the technology, owns a minority stake. This stands in contrast to the comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Allen
Paul Gardner Allen (January 21, 1953 – October 15, 2018) was an American business magnate, computer programmer, researcher, investor, and philanthropist. He co-founded Microsoft Corporation with childhood friend Bill Gates in 1975, which helped spark the microcomputer revolution of the 1970s and 1980s. Microsoft became the world's largest personal computer software company. Allen was ranked as the 44th-wealthiest person in the world by ''Forbes'' in 2018, with an estimated net worth of $20.3 billion at the time of his death. Allen left regular work at Microsoft in early 1983 after a Hodgkin lymphoma diagnosis, remaining on its board as vice-chairman. He and his sister, Jody Allen, founded Vulcan Inc. in 1986, a privately held company that managed his business and philanthropic efforts. He had a multi-billion dollar investment portfolio, including technology and media companies, scientific research, real estate holdings, private space flight ventures, and stakes in other se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scaled Composites Tier One
Tier One was a Scaled Composites' 1990s–2004 program of suborbital human spaceflight using the reusable spacecraft SpaceShipOne and its launcher White Knight. The craft was designed by Burt Rutan, and the project was funded 20 million US Dollars by Paul Allen. In 2004 it made the first privately funded human spaceflight and won the 10 million US Dollars Ansari X Prize for the first non-governmental reusable manned spacecraft. The objective of the project was to develop technology for low-cost routine access to space. SpaceShipOne was not itself intended to carry paying passengers, but was envisioned that there would be commercial spinoffs, initially in space tourism. The company Mojave Aerospace Ventures was formed to manage commercial exploitation of the technology. A deal with Virgin Galactic could see routine space tourism in the late 2010s using a spacecraft based on Tier One technology. Design Program components The design concept of Tier One was to air launch a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VSS Unity VP-03
VP-03 (also referred to in some sources as PF04) was a sub-orbital spaceflight of the SpaceShipTwo-class VSS ''Unity'' which took place on 13 December 2018, piloted by Mark P. Stucky and co-piloted by Frederick W. "CJ" Sturckow. VSS ''Unity'' was carried aloft by the White Knight Two carrier plane before being released. The spacecraft reached an apogee of ; the flight satisfied the United States definition of spaceflight () but fell short of the Kármán line (), the Fédération Aéronautique Internationale definition. The flight was operated by Virgin Galactic, a private company led by Richard Branson who conducted a space tourism flight on 11 July 2021. It was the first crewed spaceflight from U.S. soil since the Space Shuttle mission STS-135 in 2011. Crew Flights are currently only by U.S Convention. Background During the 20th century, human spaceflight was conducted exclusively by countries and government agencies, such as NASA. This began to change during the early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boundary To Space
Outer space, commonly shortened to space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty—it is a near-perfect vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays. The baseline temperature of outer space, as set by the background radiation from the Big Bang, is . The plasma between galaxies is thought to account for about half of the baryonic (ordinary) matter in the universe, having a number density of less than one hydrogen atom per cubic metre and a kinetic temperature of millions of kelvins. Local concentrations of matter have condensed into stars and galaxies. Studies indicate that 90% of the mass in most galaxies is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Observations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VSS Unity
VSS ''Unity'' (Virgin Space Ship Unity, Registration: N202VG), previously referred to as VSS ''Voyager'', is a SpaceShipTwo-class suborbital rocket-powered crewed spaceplane. It is the second ''SpaceShipTwo'' to be built and is part of the Virgin Galactic fleet. It first reached space as defined by the United States (above 50 miles) on 13 December 2018, on the VP-03 mission. ''Unity'' is able to reach space as defined by the U.S. Air Force, NASA, and the FAA, by going over 50 miles (80.5 km) above sea level. However, it is unable to go above the Kármán line, the FAI's defined space boundary at 62.1 miles (100 km). VSS ''Unity'' was rolled out on 19 February 2016 and completed ground-based system integration testing in September 2016, prior to its first flight on 8 September 2016. Overview VSS ''Unity'', the second SpaceShipTwo suborbital spaceplane for Virgin Galactic, is the first SpaceShipTwo built by The Spaceship Company. The ship's name was announced on 19 February ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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