Al Yah 3, SES-14 (NASA GOLD) - Ariane 5 ECA (VA241) - Kourou ELA-3 - 25.01.2018 22:20 UTC

Автор tnt22, 16.11.2017 13:37:39

« назад - далее »

0 Пользователи и 1 гость просматривают эту тему.

PIN


Apollo13

ЦитироватьPIN пишет:
Логично, не понимаю, почему "жесть".
Шокирован суммой. Вроде ж совсем немного недолетели.

tnt22

ЦитироватьJonathan McDowell‏Подлинная учетная запись @planet4589 9 ч. назад

After the Ariane VA241 misdelivery in January, the Al Yah 3 satellite has reached geostationary orbit and arrived on station today at 20.1W. SES-14 still has a long way to go, currently in a 17854 x 50563 km orbit

tnt22

ЦитироватьPeter B. de Selding‏ @pbdes 2 ч. назад

UAE's @yahsatofficial: IOT done, Al Yah 3 sat ready for service at 20degW; Ka-band in Africa/Brazil. @Eutelsat a customer in Africa. ~43% loss of rev capacity w/ 5-month, fuel-using trip to GEO slot after off-target @Arianespace Ariane 5 in Jan; $108M insurance claim likely.


tnt22

http://www.yahsat.com/en/news/2018/yahsat-announces-successful-al-yah-3-mission-completion
Цитировать30 MAY, 2018

Yahsat Announces Successful Al Yah 3 Mission Completion

Yahsat, a leading global satellite operator based in the UAE, has announced that its third satellite Al Yah 3, located at 20 °W has successfully completed its in-orbit testing, and is ready to support the launch of commercial services. The satellite will expand Yahsat's Ka-band coverage to 19 additional markets across Africa covering 60% of the population and marks Yahsat's first entry into Brazil where 95% of the population will have access to its satellite broadband services.
Спойлер
Masood M. Sharif Mahmood, Chief Executive Officer at Yahsat, said: "Access to the Internet is a key facilitator of social and economic progress. Today, broadband connectivity is playing an important role in creating new opportunities and in accelerating innovation. We are excited by the opportunity Al Yah 3 brings in our ability to deliver reliable and affordable satellite broadband services to parts of the world that need it the most, building upon our previous achievements as pioneers of such services across Africa, the Middle East and south-west Asia."

The successful mission is the culmination of a project which has seen Al Yah 3 designed and built with Emirati engineers leading at every stage of the process in partnership with Orbital ATK. The engineers were critical in ensuring the successful end-to-end delivery of the satellite into orbit.

"It has been an incredible journey for us and a very proud moment for both Yahsat and for the UAE. Our engineers have been heavily involved in managing all aspects of the project, including design, development and launch. We are now focusing on the commercial launch of our services using Al Yah 3 over the coming weeks." Mahmood added.

Al Yah 3, an all Ka-band satellite, and the first hybrid electric propulsion GEOStar-3™ satellite completed by Orbital ATK, was launched on an Ariane 5 rocket by Arianespace, on January 26th 2018.
[свернуть]

tnt22

ЦитироватьJonathan McDowell‏Подлинная учетная запись @planet4589 7 ч. назад

Al Yah 3 is on station at 20.1W in a 35777 x 35796 km x 0.0 deg orbit. Launch companion SES-14 is in a 25732 x 45150 km x 5.0 deg orbit still on its electric propulsion trek to GEO

поц

Космический аппарат введен в коммерческую экслуатацию
ЦитироватьКомпания Yahsat объявила о том, что ее третий космический аппарат Al Yah 3 успешно прошел этапы орбитального тестирования и готов к оказанию коммерческих услуг. Сообщается, что космический аппарат будет работать в интересах потребителей в Африке и Бразилии. Производителем космического аппарата является североамериканская Orbital ATK при сотрудничестве с инженерами из ОАЭ. Космический аппарат построен на основе платформы GEOStar-3 и оснащен гибридной электроустановкой.

tnt22

ЦитироватьJonathan McDowell‏Подлинная учетная запись @planet4589 8 ч. назад

The SES-14 satellite, misdelivered by Ariane 5 in January, finally arrived on station in geostationary orbit at 39.0W on Jul 17.

tnt22

https://www.ses.com/press-release/ses-14-goes-operational-serve-americas
ЦитироватьSES-14 Goes Operational to Serve the Americas

Written on 04 Sep 2018

SES's geostationary satellite with its wide-beam and high throughput capabilities will capture attractive growth opportunities in video, maritime and aeronautical markets across the Americas

Luxembourg, 4 September 2018 – SES announced today that the high-powered SES-14 satellite, positioned at 47.5 degrees West, is now serving Latin America, the Caribbean, North America, North Atlantic and West Africa.
Спойлер
The all-electric satellite, which has both C- and Ku-band wide-beam coverage and Ku-band high throughput spot beam coverage, is SES's second hybrid satellite to serve the Americas, with the first being SES-15.

SES-14's C-band and Ku-band wide beams and high throughput capabilities are serving various markets. The satellite is expanding the reach of SES's second cable neighbourhood in Latin America, and provides new capacity for direct-to-home services. It is also delivering more high-speed connectivity to the dynamic aeronautical market and other traffic-intensive applications in the maritime and cellular backhaul markets.
[свернуть]
The satellite also carries a hosted payload for NASA's Global-scale Observations of the Limb and Disk (GOLD) mission. GOLD will provide unprecedented imaging of the Earth's upper atmosphere from geostationary orbit to deepen scientists' understanding of the boundary between Earth and space.
Спойлер
SES-14 at 47.5 degrees West is replacing and augmenting services currently provided on NSS-806. The license to operate at this Brazilian orbital location was the result of SES's successful participation in a spectrum auction in 2014.

Martin Halliwell, Chief Technology Officer at SES, said, "Thanks to the Airbus, Arianespace and SES teams, SES-14 is able to fulfil its planned satellite mission of bringing better picture quality TV content to people across Latin America, as well as delivering high-speed broadband services to airline passengers flying over the Americas and North Atlantic routes. Enterprises and communities within the region will also be able to access the reliable connectivity provided by SES-14. SES-14 is key to SES's future growth trajectory and is part of our ongoing strategy to develop innovative capabilities for specific and growing markets."

SES-14 was launched on an Ariane 5 rocket from the Guiana Space Centre in Kourou, French Guiana. SES-14 was built by Airbus Defence and Space and is an all-electric satellite. The satellite also features a Digital Transparent Processor (DTP), which increases payload flexibility and will provide customised connectivity solutions to SES's customers.
[свернуть]

tnt22

ЦитироватьSES‏Подлинная учетная запись @SES_Satellites 5 сент.

SES-14 carries a hosted payload for @NASA's GOLD mission. This month, the team will conduct commissioning activities, incl. first light, then science operations early Oct!


tnt22

ЦитироватьNASA Sun & Space‏Подлинная учетная запись @NASASun 18 сент.

GOLD's commissioning phase continues through October, and then it will start its two-year science mission! Follow along here and at http://nasa.gov/gold 
#NASAGOLD

tnt22

ЦитироватьNASA Sun & Space‏Подлинная учетная запись @NASASun 22 ч. назад

Our GOLD instrument launched to space earlier this year to study the little-understood region where Earth's uppermost atmosphere meets the space that surrounds us. Last week, it took its first full-disk ultraviolet portrait of Earth! http://lasp.colorado.edu/home/2018/09/17/nasas-gold-instrument-captures-its-first-image-of-the-earth/ ...
#NASAGOLD


tnt22

https://www.nasa.gov/feature/goddard/2018/three-nasa-missions-return-1st-light-data
ЦитироватьSept. 21, 2018

Three NASA Missions Return 1st-Light Data

NASA's continued quest to explore our solar system and beyond received a boost of new information this week with three key missions proving not only that they are up and running, but that their science potential is exceptional. On Sept. 17, 2018, TESS — the Transiting Exoplanet Survey Satellite — shared its first science observations. Later in the week, the latest two missions to join NASA's heliophysics fleet returned first light data: Parker Solar Probe, humanity's first mission to "touch" the Sun, and GOLD, a mission that studies the dynamic boundary between Earth and space.
...

Together, the two other missions represent two key observation points in the giant system of space — ...; GOLD monitors changes in the space close to Earth, much of them driven by ever-changing solar activity. The two viewpoints support heliophysics' focus on our star and how it influences the very nature of space — and, in turn, the atmospheres of planets and human technology.
...
GOLD's first light closely followed Parker Solar Probe's. On Sept. 11, the GOLD — short for Global-scale Observations of the Limb and Disk — instrument powered on and opened its cover to scan Earth for the first time, returning a full-disk image of the Western Hemisphere in ultraviolet. In this wavelength of light, which is invisible to the human eye, GOLD enables researchers to view global-scale temperature and composition at the dynamic region where Earth's upper atmosphere meets space.

GOLD commissioning began Sept. 4 and will run through early October, as the team continues to prepare the instrument for its planned two-year science mission.
Спойлер

First light data from GOLD was captured at 6 a.m. local time, near sunrise in eastern South America, and shows the ultraviolet atomic oxygen emission from Earth's upper atmosphere. Colors correspond to emission brightness, with the strongest in red and the weakest in blue. The emission is produced at altitudes around 100 miles above the surface (note how it extends above Earth's surface on the horizon), when Earth's upper atmosphere absorbs high energy photons and particles. The aurora, at the top and bottom of the image, and daytime airglow, on the right-hand side, are also visible. An ultraviolet star, 66 Ophiuchi, is visible above the western horizon of Earth.
Credits: NASA/LASP/GOLD

"The GOLD mission is a game-changer, providing never-before-seen footage of upper atmospheric weather similar to the very first terrestrial weather satellites," said Sarah Jones, GOLD mission scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "These global-scale pictures of the boundary between Earth and space will allow scientists to start teasing out the effects coming from the Sun versus those coming from Earth's weather below."

With missions both near and far, like bookends in the vast stretch of space between the Sun and Earth, researchers are eager to fill knowledge gaps in our understanding of the complex relationship between solar activity and conditions at Earth.

Historically difficult to observe, the region GOLD studies is little-understood and can undergo dramatic change in as little as an hour. GOLD — which occupies geostationary orbit, hovering 22,000 miles over the Western Hemisphere — will provide hour-by-hour updates on the ever-changing conditions in near-Earth space, known as space weather. Shifts in space weather can garble space-traveling communications signals, interfere with electronics onboard satellites, endanger astronauts and at their most severe, disrupt power grids.
...
GOLD is a NASA mission of opportunity as part of the heliophysics Explorer Program. Goddard manages the Explorer Program for the Heliophysics Division of NASA's Science Mission Directorate in Washington. It is designed to provide frequent, low-cost access to space using principal investigator-led space science investigations relevant to the agency's astrophysics and heliophysics programs. GOLD is led by the University of Central Florida. The Laboratory for Atmospheric and Space Physics at the University of Colorado Boulder built and operates the instrument. The GOLD instrument is hosted on a commercial communications satellite, SES-14, built by Airbus for Luxembourg-based satellite operator, SES.

By Lina Tran
NASA's Goddard Space Flight Center, Greenbelt, Md.
[свернуть]
Last Updated: Sept. 21, 2018
Editor: Rob Garner

tnt22

https://blogs.nasa.gov/sunspot/2018/10/02/heres-the-very-first-image-from-nasas-new-gold-mission/
ЦитироватьHere's the Very First Image fr om NASA's New GOLD Mission

Miles Hatfield
Posted Oct 2, 2018 at 6:17 pm

By Tom Mason
Office of Communications and Outreach Manager
Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado Boulder


On Sept. 11, 2018, at approximately 6 a.m. local time in eastern South America, NASA's Global-scale Observations of the Limb and Disk, or GOLD, mission sent back its very first image.


Credit: NASA/LASP/GOLD
Спойлер
Maps like this one enable researchers to determine global-scale temperature and composition at the dynamic region wh ere Earth's upper atmosphere meets space. The image shows ultraviolet light (135.6 nm) — a kind of light that's invisible to the human eye — emitted by atomic oxygen present approximately 99 miles (160 km) above Earth's surface. The colors in the image correspond to emission brightness: The strongest emissions are shown in red and the weakest in blue. Known as "airglow," this light is produced by oxygen as it transitions from an excited state to a lower energy state. Outlines of the continents and a latitude-longitude grid have been added for reference.

The right side of the image shows the Sun-facing side of Earth, revealing daytime airglow, but emissions at the North and South Poles extend to the left, into the night side. These are the aurora borealis (northern lights) and australis (southern lights). The northern lights are more clearly visible in this image because their location depends on Earth's magnetic dipole field, which is tilted southward over North America at the top left of the image. At the southern horizon, the magnetic field is tilted slightly away from the Americas.

The speck of light visible over the western horizon is an ultraviolet star, 66 Ophiuchi (HD 164284).

GOLD launched from Kourou, French Guiana, on Jan. 25, 2018, onboard the SES-14 satellite and reached geostationary orbit in June 2018. Built by the University of Colorado Boulder's Laboratory for Atmospheric and Space Physics, and managed by NASA's Goddard Space Flight Center in Greenbelt, Maryland, GOLD will improve our understanding of the Sun's impact on Earth's upper atmosphere as well as the effects from terrestrial weather below. GOLD commissioning — the period during which the instrument's performance is assessed — began on Sept. 4 and will run through early October, as the team continues to prepare the instrument for its planned two-year science mission.

[свернуть]