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WorldView-4 Launches On Atlas V Rocket (161111-F-IV217-061)
''WorldView-4'', previously known as ''GeoEye-2'', was a third generation commercial Earth observation satellite launched on 11 November 2016, at 18:30:33 UTC. The spacecraft was operated by DigitalGlobe. With a maximum resolution of , ''WorldView-4'' provided similar imagery as ''WorldView-3'', the highest resolution commercially available at the time of its launch. The spacecraft suffered a failure in one of its control moment gyroscopes in January 2019, and operations were unable to be recovered. It reentered over New Zealand on 30 November 2021. History Work on ''GeoEye-2'' began in October 2007 when commercial imagery company GeoEye selected ITT Corporation to begin work on long lead-time items for the satellite camera system. In March 2010, an initial contract for construction of the spacecraft was awarded to Lockheed Martin Space Systems, which previously built the '' Ikonos'' imaging satellite. At the time, ''GeoEye-2'' was planned for launch in late 2012. The s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth Observation Satellite
An Earth observation satellite or Earth remote sensing satellite is a satellite used or designed for Earth observation (EO) from orbit, including spy satellites and similar ones intended for non-military uses such as environmental monitoring, meteorology, cartography and others. The most common type are Earth imaging satellites, that take satellite images, analogous to aerial photographs; some EO satellites may perform remote sensing without forming pictures, such as in GNSS radio occultation. The first occurrence of satellite remote sensing can be dated to the launch of the first artificial satellite, Sputnik 1, by the Soviet Union on October 4, 1957. Sputnik 1 sent back radio signals, which scientists used to study the ionosphere. The United States Army Ballistic Missile Agency launched the first American satellite, Explorer 1, for NASA’s Jet Propulsion Laboratory on January 31, 1958. The information sent back from its radiation detector led to the discovery of the Earth's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Preliminary Design Review
In the United States military integrated acquisition lifecycle the Technical section has multiple acquisition "Technical Reviews". Technical reviews and audits assist the acquisition and the number and types are tailored to the acquisition. Overall guidance flows from the Defense Acquisition Guidebook chapter 4, with local details further defined by the review organizations. Typical topics examined include adequacy of program/contract metrics, proper staffing, risks, budget, and schedule. In NASA's engineering design life cycle, design reviews are held for technical and programmatic accountability and to authorize the release of funding to a project. A design review provides an in-depth assessment by an independent team of discipline experts and managers that the design (or concept) is realistic and attainable from a programmatic and technical sense. Design review is also required of medical device developers as part of a system of design controls described in the US Food and D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exelis Inc
''Exelis'' is a genus of moths in the family Geometridae erected by Achille Guenée Achille Guenée (sometimes M.A. Guenée; 1 January 1809 – 30 December 1880) was a French lawyer and entomologist. Biography Achille Guenée was born in Chartres and died in Châteaudun. He was educated in Chartres, where he showed a very e ... in 1857. Species *'' Exelis dicolus'' Rindge, 1952 *'' Exelis mundaria'' Dyar, 1916 *'' Exelis ophiurus'' Rindge, 1952 *'' Exelis pyrolaria'' Guenee, 1857 References * Boarmiini {{Boarmiini-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Range (USAF)
The Western Range (WR) is the space launch range that supports the major launch head at Vandenberg Space Force Base. Managed by the Space Launch Delta 30, the WR extends from the West Coast of the United States to 90° East longitude in the Indian Ocean where it meets the Eastern Range Operations involve military, government, and commercial interests. The WR has been operated by civilian contractors since its establishment, following the precedent of the Eastern Range. On 1 October 2003, InDyne Inc. took over the range contract from ITT Industries which had operated the range for the previous 44 years. History Navy's Pacific Missile Range (PMR) The Navy established the Naval Missile Facility at Point Arguello (NMFPA) after the transfer from the Army of 19,800 acres from the southern portion of Camp Cooke in May 1958. Camp Cooke was a World War II training and POW facility and a maximum security Disciplinary Barracks site. Cooke Air Force Base, later Vandenberg Space Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canyon Fire (2016)
The Canyon Fire was a wildfire that burned on Vandenberg Space Force Base in Santa Barbara County, California during September 2016. By the time the fire was contained on September 24, it had burned of land. Due to the nature of the activities that take place on the Base, there were a number of unique challenges posed during the fire including the presence of potentially hazardous materials. The fire The fire broke out September 17 and quickly grew to over . Due to the location of the fire, burning in a remote canyon on the southern half of the base, access was difficult for fire crews. On September 18 the fire jumped to over prompting evacuation warnings for homes on San Miguelito Canyon south of Lompoc and east of the base. By mid-afternoon on September 19 the fire had grown to over and with no containment was continuing to burn with a moderate rate of spread. As the fire continued to spread, firefighters were faced with a number of unique challenges. Base officials warned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbilical Cable
An umbilical cable or umbilical is a cable and/or hose that supplies required consumables to an apparatus, like a rocket, or to a person, such as a diver or astronaut. It is named by analogy with an umbilical cord. An umbilical can, for example, supply air and power to a pressure suit or hydraulic power, electrical power and fiber optics to subsea equipment and divers. Spaceflight applications Rockets Umbilicals connect a missile or space vehicle to ground support equipment on the launch pad before launch. Cables carry electrical power, communications, and telemetry, and pipes or hoses carry liquid propellants, cryogenic fluids, and pressurizing and purge gases. These are automatically disconnected shortly before or at launch. Umbilical connections are also used between rocket stages, and between the rocket and its spacecraft payload; these umbilicals are disconnected as stages are disconnected and discarded. Space suits Early space suits used in Project Gemini in 1965 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Support Equipment
File:Qatar Airways Airbus A380-800 at Heathrow Airport Terminal 4 before Flying to Doha, 6 Jan 2015.jpg, Qatar Airways Airbus A380-800 on apron outside Heathrow Terminal 4 with a wide range of ground handling equipment around such as aircraft container, pallet loader, Unit load device, ULD, jet air starter, belt loader, pushback tug, catering vehicles, jet bridges, and dollies. File:CaribbeanAirlines738 POS.jpg, alt=Caribbean Airlines Boeing 737-800 with a ride range of Airport ground support equipment, Ground handling equipment at Piarco International Airport. Image:Airport equpment.JPG, Ground support equipment Image:KLM 777 pushback.jpg, Pushing a KLM Boeing 777 back Ground support equipment (GSE) is the support equipment found at an airport, usually on the apron, the servicing area by the terminal. This equipment is used to service the aircraft between flights. As the name suggests, ground support equipment is there to support the operations of aircraft whilst on the ground. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Hydrogen
Liquid hydrogen (LH2 or LH2) is the liquid state of the element hydrogen. Hydrogen is found naturally in the molecular H2 form. To exist as a liquid, H2 must be cooled below its critical point of 33 K. However, for it to be in a fully liquid state at atmospheric pressure, H2 needs to be cooled to .IPTS-1968 iupac.org, accessed 2020-01-01 A common method of obtaining liquid hydrogen involves a compressor resembling a jet engine in both appearance and principle. Liquid hydrogen is typically used as a concentrated form of . Storing it as liquid takes less space than storing it as a gas at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service Structure
A service structure is a steel framework or tower that is built on a rocket launch pad to facilitate assembly and servicing. An umbilical tower also usually includes an elevator which allows maintenance and crew access. Immediately before ignition of the rocket's motors, all connections between the tower and the craft are severed, and the bridges over which these connections pass often quickly swing away to prevent damage to the structure or vehicle. Kennedy Space Center During the Space Shuttle program, the structures at the Launch Complex 39 pads contained a two-piece access tower system, the Fixed Service Structure (FSS) and the Rotating Service Structure (RSS). The FSS permitted access to the Shuttle via a retractable arm and a "beanie cap" to capture vented LOX from the external tank. The RSS contained the Payload Changeout Room, which offered "clean" access to the orbiter's payload bay, protection from the elements, and protection in winds up to . The FSS on Pad 39A was co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
InSight
Insight is the understanding of a specific cause and effect within a particular context. The term insight can have several related meanings: *a piece of information *the act or result of understanding the inner nature of things or of seeing intuitively (called noesis in Greek) *an introspection *the power of acute observation and deduction, discernment, and perception, called intellection or noesis *An understanding of cause and effect based on the identification of relationships and behaviors within a model, context, or scenario (see artificial intelligence) An insight that manifests itself suddenly, such as understanding how to solve a difficult problem, is sometimes called by the German word '' Aha-Erlebnis''. The term was coined by the German psychologist and theoretical linguist Karl Bühler. It is also known as an epiphany, eureka moment or (for cross word solvers) the penny dropping moment (PDM). Sudden sickening realisations often identify a problem rather than solving i ... [...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] |
WorldView-4 Launches On Atlas V Rocket (161111-F-IV217-061)
''WorldView-4'', previously known as ''GeoEye-2'', was a third generation commercial Earth observation satellite launched on 11 November 2016, at 18:30:33 UTC. The spacecraft was operated by DigitalGlobe. With a maximum resolution of , ''WorldView-4'' provided similar imagery as ''WorldView-3'', the highest resolution commercially available at the time of its launch. The spacecraft suffered a failure in one of its control moment gyroscopes in January 2019, and operations were unable to be recovered. It reentered over New Zealand on 30 November 2021. History Work on ''GeoEye-2'' began in October 2007 when commercial imagery company GeoEye selected ITT Corporation to begin work on long lead-time items for the satellite camera system. In March 2010, an initial contract for construction of the spacecraft was awarded to Lockheed Martin Space Systems, which previously built the '' Ikonos'' imaging satellite. At the time, ''GeoEye-2'' was planned for launch in late 2012. The s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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