2018/7/31,Boeing and SpaceX test the next U.S. ride to space: The international space station is expecting two visitors this month: Starliner and Crew Dragon=ボーイングとSpaceXは、スペースへの次の米国道のりをテストします：国際宇宙ステーションは、今月、2人の訪問客をあてにしています： Starlinerとクルー・ドラゴン=
Two possible successors to NASA's space shuttle are scheduled to visit the International Space Station this month, in their last big step before they transport humans. A successful flight test for Boeing's CST-100 Starliner and SpaceX's Crew Dragon spacecraft would show that these vehicles are finally ready to carry both NASA astronauts and space tourists into orbit. https://ieeexplore.ieee.org/document/8423570/
2018/9/28,New Spot-Beam Antennas Boost Communication Satellites’ Bandwidth=新しいスポットビーム・アンテナは、通信衛星の帯域幅を押し上げます=
SSL’s satellites constructed for Telesat also feature 3D-printed components= Telesatのためにも造られるSSLの衛星は、3Dをプリントした構成要素を特徴とします=
Over the past few months, the spacecraft manufacturing company SSL put the finishing touches on three massive communications satellites. It built two of them for Canadian operator Telesat. Then it initiated its plan to have them launched, one after the other, into distinct geosynchronous orbits 36,000 kilometers above Earth—perches that will keep each satellite hovering over a particular spot, even as the planet turns.
From their respective vantage points, the pair built for Telesat will deliver high-speed communications services, including broadband Internet, to Asia and the Americas for the next 15 years.
At more than 7,000 kilograms, Telstar 19 Vantage became the heaviest commercial communications satellite ever launched when it left Earth on 22 July. But the record-setting 19V and its sibling, Telstar 18 Vantage (which was launched on 10 September), are also noteworthy in other ways.
What makes them so special? The 18V and 19V feature antennas that can transmit a type of beam that will vastly improve their data throughput. What’s more, SSL used 3D-printing techniques to build and customize both satellites.
https://spectrum.ieee.org/aerospace/satellites/new-spotbeam-antennas-boost-communication-satellites-bandwidth
Two possible successors to NASA's space shuttle are scheduled to visit the International Space Station this month, in their last big step before they transport humans. A successful flight test for Boeing's CST-100 Starliner and SpaceX's Crew Dragon spacecraft would show that these vehicles are finally ready to carry both NASA astronauts and space tourists into orbit. https://ieeexplore.ieee.org/document/8423570/
2018/9/28,New Spot-Beam Antennas Boost Communication Satellites’ Bandwidth=新しいスポットビーム・アンテナは、通信衛星の帯域幅を押し上げます=
SSL’s satellites constructed for Telesat also feature 3D-printed components= Telesatのためにも造られるSSLの衛星は、3Dをプリントした構成要素を特徴とします=
Over the past few months, the spacecraft manufacturing company SSL put the finishing touches on three massive communications satellites. It built two of them for Canadian operator Telesat. Then it initiated its plan to have them launched, one after the other, into distinct geosynchronous orbits 36,000 kilometers above Earth—perches that will keep each satellite hovering over a particular spot, even as the planet turns.
From their respective vantage points, the pair built for Telesat will deliver high-speed communications services, including broadband Internet, to Asia and the Americas for the next 15 years.
At more than 7,000 kilograms, Telstar 19 Vantage became the heaviest commercial communications satellite ever launched when it left Earth on 22 July. But the record-setting 19V and its sibling, Telstar 18 Vantage (which was launched on 10 September), are also noteworthy in other ways.
What makes them so special? The 18V and 19V feature antennas that can transmit a type of beam that will vastly improve their data throughput. What’s more, SSL used 3D-printing techniques to build and customize both satellites.
https://spectrum.ieee.org/aerospace/satellites/new-spotbeam-antennas-boost-communication-satellites-bandwidth