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PhoneSat
PhoneSat is an ongoing NASA project of building nanosatellites using unmodified consumer-grade off-the-shelf smartphones and Arduino platform and launching them into Low Earth Orbit. This project is part of NASA's Small Spacecraft Technology Program and was started in 2009 at NASA Ames Research Center (Moffett Field, California). When the project started, a typical smartphone had a faster CPU and more memory than the average satellite, one or two cameras, multiple acceleration and rotation sensors, a compass, a GPS receiver, radios, and a Li-Ion battery, all of which had benefited from significant research and development efforts and economy of scale in the telecommunications industry to reduce cost. The construction cost of the first version of PhoneSat satellite was reported to be US$3,500 and that of the second version was reported to be below US$7,000. The chassis is a single standard CubeSat bus and sized 10cm × 10cm × 10cm (around 4 inches per side). Control software ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell (satellite)
Bell, also known as PhoneSat 1.0b or PhoneSat v1b was a technology demonstration satellite operated by NASA's Ames Research Center, which was launched in April 2013. Part of the PhoneSat programme, it was one of the first three PhoneSat spacecraft to be launched. A PhoneSat-1.0 satellite, ''Bell'' was built to the single-unit (1U) CubeSat specification, and measures in each dimension. The satellite is based on an off-the-shelf HTC Nexus One smartphone which serves in place of an onboard computer and avionics system. Unlike the more advanced PhoneSat-2.0 spacecraft, ''Bell'' is powered by non-rechargeable batteries, and has no attitude control system, however onboard sensors can be used to determine and monitor the satellite's attitude. The cameras built into the phones aboard ''Bell'' and its sister satellite ''Graham'' have been used to return images of the Earth from space. Unlike ''Graham'', Bell has an external Iridium modem attached to one of its side. Independent battery ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graham (satellite)
Graham, also known as PhoneSat 1.0a or PhoneSat v1a was a technology demonstration satellite operated by NASA's Ames Research Center, which was launched in April 2013. Part of the PhoneSat programme, it was one of the first three PhoneSat spacecraft to be launched. A PhoneSat-1.0 satellite, ''Graham'' was built to the single-unit (1U) CubeSat specification, and measures in each dimension. The satellite is based on an off-the-shelf HTC Nexus One smartphone which serves in place of an onboard computer and avionics system. Unlike the more advanced PhoneSat-2.0 spacecraft, ''Graham'' is powered by non-rechargeable batteries, and has no attitude control system, however onboard sensors can be used to determine and monitor the satellite's attitude. The cameras built into the phones aboard ''Graham'' and its sister satellite ''Bell'' was used to return images of the Earth from space. ''Graham'' was named after Alexander Graham Bell, the inventor of the telephone. The two other PhoneS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander (satellite)
Alexander, also known as PhoneSat 2.0 Beta or PhoneSat v2a is a technology demonstration satellite operated by NASA's Ames Research Center, which was launched in April 2013. Part of the PhoneSat programme, it was one of the first three PhoneSat spacecraft, and the first Phonesat-2.0 satellite, to be launched. A PhoneSat-2.0 satellite, ''Alexander'' was built to the single-unit (1U) CubeSat specification, and measures in each dimension. The satellite is based on an off-the-shelf Samsung Electronics Nexus S smartphone which serves in place of an onboard computer. The satellite is equipped with a two-way S-band transponder and solar cells for power generation. The spacecraft uses the phone's gyroscopes, along with a GPS receiver, to determine its position and orientation, and a system of reaction wheels and magnetorquer coils for attitude control. ''Alexander'' was named after Alexander Graham Bell, the inventor of the telephone. The two other PhoneSat spacecraft launched aboar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TechEdSat
Technology Education Satellite (TechEdSat) is a successful nano-sat flight series conducted from the NASA Ames Research Center in collaboration with numerous universities (San Jose State University, University of Idaho, University of California, University of Minnesota, Smith College). While one of the principal aims has been to introduce young professionals and university students to the practical realm of developing space flight hardware, considerable innovations have been introduced. In addition, this evolving flight platform has tested concepts for Low Earth Orbit (LEO) sample return, as well as planetary nano-sat class mission concepts. TechEdSat-1 The first TechEdSat (later renamed "TechEdSat-1" or "TES-1") was a 1U-Cubesat designed to evaluate Space Plug-and-play Avionics (SPA) designed in Sweden by ÅAC Microtec. It was also originally intended to perform a communications experiment utilizing the Iridium and Orbcomm satellite phone network, although this functi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanosatellite
A small satellite, miniaturized satellite, or smallsat is a satellite of low mass and size, usually under . While all such satellites can be referred to as "small", different classifications are used to categorize them based on mass. Satellites can be built small to reduce the large economic cost of launch vehicles and the costs associated with construction. Miniature satellites, especially in large numbers, may be more useful than fewer, larger ones for some purposes – for example, gathering of scientific data and radio relay. Technical challenges in the construction of small satellites may include the lack of sufficient power storage or of room for a propulsion system. Rationales One rationale for miniaturizing satellites is to reduce the cost; heavier satellites require larger rockets with greater thrust that also have greater cost to finance. In contrast, smaller and lighter satellites require smaller and cheaper launch vehicles and can sometimes be launched in mul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nexus One
The Nexus One (codenamed HTC Passion) is an Android smartphone designed and manufactured by HTC as Google's first Nexus smartphone. The Nexus became available on January 5, 2010, and features the ability to transcribe voice to text, an additional microphone for dynamic noise suppression, and voice guided turn-by-turn navigation to drivers. The device was sold SIM-unlocked and not restricted to use on a single network provider. Google offered T-Mobile US and AT&T versions of the phone online in the United States before closing the online store in July 2010. A version for use on Vodafone (European) networks was announced on April 26, 2010, available in the United Kingdom four days later. On March 16, 2010, the Nexus One became available on the Google web store (Play Store) for sale in Canada for use with most Canadian carriers. In May 2010, Google announced the closing of the web store, with the intention to distribute the phone through partners around the world. History A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CubeSat
A CubeSat is a class of miniaturized satellite based around a form factor consisting of cubes. CubeSats have a mass of no more than per unit, and often use commercial off-the-shelf (COTS) components for their electronics and structure. CubeSats are put into orbit by deployers on the International Space Station, or launched as secondary payloads on a launch vehicle. , more than 1,600 CubeSats have been launched. In 1999, California Polytechnic State University (Cal Poly) professor Jordi Puig-Suari and Bob Twiggs, a professor at Stanford University Space Systems Development Laboratory, developed the CubeSat specifications to promote and develop the skills necessary for the design, manufacture, and testing of small satellites intended for low Earth orbit (LEO) that perform a number of scientific research functions and explore new space technologies. Academia accounted for the majority of CubeSat launches until 2013, when more than half of launches were for non-academic purpose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nexus S
The Nexus S 4G is a smartphone co-developed by Google and Samsung and manufactured by Samsung Electronics for release in 2010. It was the first smartphone to use the Android 2.3 "Gingerbread" operating system, and the first Android device to support Near Field Communication (NFC) in both hardware and software. This was the fourth time that Google worked with a manufacturer to produce a phone, the previous being the Google G1, myTouch and the Nexus One, all three by HTC. Following the Nexus S, the next Android Developer phone was the Galaxy Nexus, released the following year. Nexus S is the first commercial smartphone certified by NASA to fly on the space shuttle and to be used on the International Space Station, as part of the SPHERES experiment. History and availability The Nexus S was demonstrated by Google CEO Eric Schmidt on November 15, 2010, at the Web 2.0 Summit. Google officially announced the phone on their blog on December 6, 2010. The phone became available f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetorquer
A magnetorquer or magnetic torquer (also known as a torque rod) is a satellite system for attitude control, detumbling, and stabilization built from electromagnetic coils. The magnetorquer creates a magnetic dipole that interfaces with an ambient magnetic field, usually Earth's, so that the counter-forces produced provide useful torque. Functional principle Magnetorquers are essentially sets of electromagnets laid out to yield a rotationally asymmetric (anisotropic) magnetic field over an extended area. That field is controlled by switching current flow through the coils on or off, usually under computerized feedback control. The magnets themselves are mechanically anchored to the craft, so that any magnetic force they exert on the surrounding magnetic field will lead to a magnetic reverse force and result in mechanical torque about the vessel's center of gravity. This makes it possible to freely pivot the craft around in a known local gradient of the magnetic field by only usi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samsung
The Samsung Group (or simply Samsung) ( ko, 삼성 ) is a South Korean multinational manufacturing conglomerate headquartered in Samsung Town, Seoul, South Korea. It comprises numerous affiliated businesses, most of them united under the ''Samsung'' brand, and is the largest South Korean (business conglomerate). Samsung has the eighth highest global brand value. Samsung was founded by Lee Byung-chul in 1938 as a trading company. Over the next three decades, the group diversified into areas including food processing, textiles, insurance, securities, and retail. Samsung entered the electronics industry The electronics industry is the economic sector that produces electronic devices. It emerged in the 20th century and is today one of the largest global industries. Contemporary society uses a vast array of electronic devices built-in automated or ... in the late 1960s and the construction and shipbuilding industries in the mid-1970s; these areas would drive its subseque ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S Band
The S band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a part of the microwave band of the electromagnetic spectrum covering frequencies from 2 to 4 gigahertz (GHz). Thus it crosses the conventional boundary between the UHF and SHF bands at 3.0 GHz. The S band is used by airport surveillance radar for air traffic control, weather radar, surface ship radar, and some communications satellites, especially those used by NASA to communicate with the Space Shuttle and the International Space Station. The 10 cm radar short-band ranges roughly from 1.55 to 5.2 GHz. The S band also contains the 2.4–2.483 GHz ISM band, widely used for low power unlicensed microwave devices such as cordless phones, wireless headphones (Bluetooth), wireless networking (WiFi), garage door openers, keyless vehicle locks, baby monitors as well as for medical diathermy machines and microwave ovens (typically at 2.495 GHz). India's reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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