Автор tnt22, 21.03.2019 15:53:26
0 Пользователей и 1 гость просматривают эту тему.
Цитата100th Scottish-built satellite enters orbitBy Kenneth MacdonaldBBC Scotland Science Correspondent2 hours agoFour Lemurs were aboard the Indian Space Research Organisation's PSLV-C45 rocketThe data company Spire Global has announced the launch of its 100th Glasgow-built satellite.The Low Earth Multi-Use Receiver (Lemur) satellites are designed to gather data on shipping, weather and aircraft.The company, which is headquartered in San Francisco, says it already has the world's largest constellation of Earth observation satellites.It plans to have 175 of them in low Earth orbit.Each Lemur is based on the small CubeSat design.The basic unit is a 10cm cube - a litre of instrumentation. The Lemur is a so-called 3U design - a stack of three such cubes.That's not much more than the volume of an extra-large bottle of supermarket cola, but miniaturisation means a lot of sensor power can be crammed into a small space.The satellites are shot into their correct positions from a rocketIt also means a satellite that can piggyback on a rocket carrying a larger payload into orbit, cutting launch costs.The latest launch carried four Lemurs aboard the Indian Space Research Organisation's PSLV-C45 rocket.Once in space, the CubeSats made their final leap to orbit from a deployer built by the American company Nanoracks.Its basic principle is simple: the satellites are shot into their correct positions by a spring mechanism like an orbital jack in the box.Spire Global styles itself as a space data analytics company rather than a satellite builder.It uses its satellites to gather information from parts of the world which can be difficult to monitor.They harvest weather data from otherwise remote regions and track ships and their cargoes sailing far beyond the reach of coastal radar. They can also track aircraft.Control risksThe resulting datasets are quickly made available to customers across the world.They are marketed to shipping and insurance companies wanting to control risks, and to coastguards and other agencies fighting piracy and illegal fishing.Spire chose Glasgow as its European base because of the city's existing expertise in space technology.The first Scottish-built satellite was UKube-1, a 3U CubeSat built for the UK Space Agency and launched in 2014.It was assembled in Glasgow by Clyde Space, which has now been bought by the Swedish space company AAC. Clyde Space continues to be a major player in the market for CubeSat components.Scotland has a burgeoning space tech sector which has created thousands of jobs and now more than 100 satellites.Other firms are planning more satellites and launch vehicles.But there are already more Glasgow-built satellites in orbit than from any other city in Europe.
ЦитатаAstrocast Successfully Launches Second Test NanosatelliteSatellite Tests Clean Propulsion Technologies for Rapid Separation, Collision Avoidance, and De-OrbitingAstrocast Launches Mission Hawaii (Graphic: Business Wire)April 01, 2019 06:00 AM Eastern Daylight TimeLAUSANNE, Switzerland-- (BUSINESS WIRE)--Astrocast announced today the successful launch of its second IoT Nanosatellite. The launch, piloted by Indian Space Research Organization (ISRO) on its Polar Satellite Launch Vehicle (PSLV), took place yesterday from the Satish Dhawan Space Center. This second mission will offer more opportunities to customers interested in testing the Astrocast IoT communication services. This mission will also focus on a set of propulsion technologies designed for separation, collision avoidance and de-orbiting. Скрытый текст: "It is very important that companies think about the entire lifecycle of their nanosatellites. As a Swiss company, we will lead by example and do everything we can to keep space clean. Using a set of reliable and flight proven technologies, Astrocast is building the ability to control, maneuver and ultimately de-orbit its satellites," said Fabien Jordan, CEO of Astrocast. "We can avoid collisions from other satellites, easily de-orbit and re-deploy satellites for technology upgrades, and reduce the amount of space debris left at the end of a satellite's lifecycle. This nanosatellite represents the first of many technology advances we aim to develop toward the security and longevity of our network."The ability to control, reposition and de-orbit nanosatellites is key to lessening the amount of space debris that is currently plaguing low-earth orbit missions. Collision avoidance is an ongoing battle. Astrocast is the first to test a series of technologies that will allow them to have greater control and maneuverability of their network once it is launched. These technologies include:[/li]Gas propulsionElectric propulsionAutomatic de-orbitingBackup communications"It is important that companies begin to think long term about the nanosatellites they launch into orbit. Clean nanosatellite technology is possible, and we are taking some of the first steps toward this," Jordan said.This is the second test of the Astrocast IoT Nanosatellite network. The first test, launched in December, is fully stabilized with a working payload and is operating nominally. Astrocast is a nanosatellite network of 64 CubeSats specifically designed to transmit and receive low bandwidth data from IoT devices. Astrocast will be the first nanosatellite solution to deliver all of these features:[/li]100% coverage of the globe including remote areasLowest latency low earth orbit networkTwo-way communicationsL-Band and S-Band frequenciesCommunication module smaller than a credit card designed in partnership with Airbus256 bit encryption with multi-level securityPatented data protocol developed and optimized for satellite IoTLow-cost and ultra-low power chipset optimized for AstrocastMiniaturized antennaLow-cost data plansWeb application for monitoring assets and subscription plan.About AstrocastAstrocast SA, in partnership with the European Space Agency, Airbus, and Thuraya, is developing an advanced nanosatellite network for the Internet of things (IoT). Airbus and Astrocast have developed a low-cost ASIC and module that provides the most power efficient satellite modem for IoT applications. The constellation will consist of 64 CubeSat satellites in Low Earth Orbit (LEO) and will provide low latency global coverage. Astrocast was founded in 2014 by the developers of SwissCube, one of the longest lasting, operational nanosatellites in space. For more information visit www.astrocast.com.
ЦитатаPSLV-C45 Liftoff and Onboard Camera Viewhttps://www.isro.gov.in/sites/default/files/videos/c_45_lift_off_and_onboard_camera_view.mp4Description: PSLV-C45 Liftoff and Onboard Camera ViewFormat : MP4File Size : 47.7 MBDuration : 00:02:16
ЦитатаLiftoff and Onboard Camera View of PSLV-C45/EMISAT MissionSriharikota LiveОпубликовано: 1 апр. 2019 г.
ЦитатаLiftoff! 20 Next-Generation Dove Satellites Launch On ISRO's PSLVMike Safyan | April 1, 2019On Sunday evening Pacific Time, 20,000 next-generation Dove satellites were successfully launched into orbit aboard ISRO's PSLV-C45 rocket. (April Fools'! It was 20 satellites, not 20,000.) We're happy to report that all 20 satellites have made contact and began the automated commissioning process (thanks, Planet Mission Control team!).All 20 satellites, Flock 4a, were placed into a 500km Sun synchronous orbit (SSO) with a mid-morning crossing time.Many thanks to Antrix/ISRO for the safe journey - our 5th flight on a PSLV rocket. We'll be sharing more updates on the improved capabilities of these next-generation Dove satellites as they come online.Liftoff of PSLV-C45. Credit: ISRO
0 TBA - TO BE ASSIGNED1 44104U 19018AC 19091.80538929 -.00000087 00000-0 00000+0 0 99912 44104 97.5181 152.3082 0057708 344.6321 67.1993 15.30287057 990 TBA - TO BE ASSIGNED1 44105U 19018AD 19091.80573584 -.00000087 00000-0 00000+0 0 99982 44105 97.5272 152.3152 0058395 349.7156 64.1546 15.30414206 93
ЦитатаJonathan McDowellПодлинная учетная запись @planet4589 10 мин. назадPSLV launch: now 25 objects in the 493 x 507 km orbit (out of 28 expected) and two objects in a lower 435 x 515 km orbit. That's a bit odd, was expecting one object (PSLV PS4) in a 435 x 435 km orbit. Possibly final RCS burn did not happen, and a debris object came off.
0 TBA - TO BE ASSIGNED1 44108U 19018AE 19092.07810161 -.00000070 00000-0 00000+0 0 99982 44108 97.4667 152.6207 0008737 283.3755 167.6982 15.21878784 10
0 TBA - TO BE ASSIGNED1 44109U 19018AF 19094.76141006 .00003126 00000-0 10639-3 0 99992 44109 97.5200 155.2944 0060816 331.0046 147.9560 15.29450023 341
ЦитатаJonathan McDowellПодлинная учетная запись @planet4589 16:22 PDT - 3 апр. 2019 г.Three more objects cataloged today: 44106 and 44107 are GTO debris objects from the Centaur AV-049 breakup and 44109 is another object from the PSLV launch, in the same low orbit as the 4th stage16:23 PDT - 3 апр. 2019 г.This means that we now have the right number of objects being tracked from the PSLV launch, but two of them are not in the orbit they were expected to be in (deploy hang?)
ЦитатаT.S. Kelso @TSKelso 2 ч. назадCelesTrak has now identified all 30 objects from the PSLV-C45 launch, with input from @SpireGlobal on their 4 satellites and @HAMSATNL on M6P. That made BLUEWALKER 1 #44105, by process of elimination. https://celestrak.com/NORAD/elements/tle-new.php ...
ЦитатаTwo NanoAvionics Satellites were Launched with PSLV-C45, Communications Established Successfully Press Releases 2019-04-08After the last week's lift-off of the PSLV-C45 launch vehicle with two NanoAvionics nano-satellites, "M6P" and "Blue Walker 1", onboard, the company is pleased to confirm that the communication was successfully established with both satellites and they are flying in the Low Earth Orbit in a healthy condition."M6P" and "Blue Walker 1" were launched from the India Space Research Organization's Satish Dhawan Space Center on April 1 (03:57 UTC) with the PSLV-C45 launch vehicle, which rose to a 749-kilometer polar orbit and deployed the primary payload, the Indian government's own EMISAT. Eighty-three minutes later, the PSLV-C45 began deploying the remaining 28 small satellites, including "M6P" and "Blue Walker 1." NanoAvionics' mission operation control center established two-way communication with "M6P" on the 2nd of April 11 am UTC and with "Blue Walker 1" on 3rd of April 5 pm UTC. The telemetry data and information from NORAD indicates that both satellites were ins erted into a lower orbit than it had been expected, due to currently unknown reasons which are under investigation. Delayed separation from the 4th stage of PSLV caused delays in the initial commissioning of "M6P" and "Blue Walker 1" and also slightly reducing the expected orbital lifetime of both satellites. The impact of the anomaly on the mission is currently under evaluation.Currently, both nano-satellites are in the commissioning stage. NanoAvionics will operate "M6P" and "Blue Walker 1" for the full length of their missions, further benefiting its customers.NanoAvionics "M6P" is a ride-share mission which hosts payloads from two Internet of Things (IoT) communication companies. SpaceWorks Orbital and Lacuna Space are each developing satellite-based communication systems for a new generation of low-power IoT devices."BlueWalker 1" is used for testing AST & Science patented technologies in space. The "BlueWalker 1" is the first of three nano-satellites that AST & Science plans to deploy over the course of eighteen months. The two companies are partnering to take advantage of NanoAvionics' best-in-class buses, power systems, and services for this and subsequent AST & Science missions.The large payload volume of NanoAvionics M6P bus, up to 5U, can support small payloads from multiple customers. By sharing an M6P bus's up to 5U payload volume, project teams can divert resources to other essential tasks. Also, the rideshare service relieves the burden of launch integration and logistics, frequency allocation, and satellite operation while it's in orbit for NanoAvionics customers. The M6P bus's standardized hardware and software interfaces accelerate the satellite integration timeframe by several times as well as help to define an interface for payloads."Two NanoAvionics nano-satellites, both based on the company's flagship multipurpose satellite bus and carried on the PSLV-C45, demonstrate great team-work and the val ue of our design approach," NanoAvionics CEO Vytenis J. Buzas said. "We help our customers accelerate their development cycles with rapid integration and more frequent shared payload opportunities. "Blue Walker 1" was manufactured, tested, and launched in less than three months, which is a real manifestation of the new space ideology".ABOUT NANOAVIONICS:NanoAvionics is a nano-satellite bus manufacturer and mission integrator. Its flagship multi-purpose M6P is the first preconfigured nano-satellite Bus in the sector, designed to serve emerging commercial space markets. The company's efforts are focused on enabling critical satellite functions and optimizing their launch, hardware and operation costs - ranging from single missions to constellations. Its core engineering team has implemented over 40 successful satellite missions during the past several years. www.n-avionics.com Press contacts: Vaida Karaliunaite Head of Marketing NanoAvionics, LLC