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 by Staff Writers Sriharikota, India (ISRO) Apr 02, 2019
India's Polar Satellite Launch Vehicle has successfully launched EMISAT and 28 international customer satellites into their designated orbits. The PSLV-C45 mission lifted off at 09:27 Hrs (IST) on April 01, 2019 from the second launch pad of Satish Dhawan Space Centre SHAR, Sriharikota in its 47th flight. This flight marked the first mission of PSLV-QL, a new variant of PSLV with four strap-on motors. About 17 minutes and 12 seconds after lift-off, EMISAT was successfully injected into intended sun-synchronous polar orbit of 748 km height. After the separation of EMISAT, the vehicle's fourth stage engines were restarted twice to place the 28 international customer satellites precisely into a sun-synchronous orbit of 504 km height. The last customer satellite was placed in its designated orbit 1 hour and 55 minutes after lift-off. About 3 hours after lift-off, the fourth stage (PS4) of the vehicle was moved to a lower circular orbit of 485 km after two restarts to establish it as an orbital platform for carrying out experiments with its three payloads. The PS4 payloads are Automatic Identification System from ISRO, Automatic Packet Repeating System from AMSAT, India and Advanced Retarding Potential Analyzer for ionospheric studies from Indian Institute of Space Science and Technology.
earlier report The launch is scheduled for Mon., April 1, 2019 Indian Standard Time (Sun., March 31 PDT). Payloads aboard the mission include the Astrocast-02 3U cubesat from Switzerland-based Astrocast and Flock 4a, 20 next-generation Dove satellites from Planet. This launch represents Spaceflight's eighth launch on a PSLV and with the completion of this mission, the company will have sent 95 spacecraft to orbit aboard PSLVs. "PSLV missions continue to offer a reliable and proven launch option for our customers," said Curt Blake, CEO of Spaceflight. "By working with Antrix/ISRO and a wide range of vehicle providers, we are uniquely positioned to offer the greatest number of launch options to our customers. Having greater flexibility in launches can minimize the negative impacts of delays which is especially valuable for organizations launching multiple spacecraft." Spaceflight successfully launched the first test satellite of Astrocast's IoT Nanosatellite Network on its historic SSO-A dedicated rideshare mission in December 2018. Astrocast's network of 64 cubesats will securely extend the reach of two-way communications to the 90 percent of the globe currently not covered by cellular networks. Using L-Band frequencies, Astrocast's small form factor modules, miniaturized antennas, and optimized data protocol make it the most advanced nanosatellite on the market today. "Reliable access to space is critical to Astrocast's mission," said Fabien Jordan, CEO of Astrocast. "With Spaceflight, we were able to successfully deploy our first satellite and are looking forward to the PSLV launch as well as other missions in the near future." In what is Planet's first launch of 2019, Flock 4a will join its current constellation of more than 100 Doves, replenishing the on-orbit fleet and providing upgrades to its imaging chain to improve image sharpness, radiometric consistency and spectral precision. This mission marks Spaceflight's second launch of 2019 and its first PSLV mission of the year following the successful launches of GTO-1, which deployed the first commercial lunar lander in February aboard a SpaceX Falcon 9, and SSO-A, the company's historic dedicated rideshare mission, which launched 64 unique smallsats in December 2018. To date, the company has negotiated the launch of 224 satellites and has plans for approximately 10 missions in 2019 launching nearly 100 payloads across a wide variety of launch vehicles, include the Falcon 9, Antares, Electron, Vega, Soyuz, and LauncherOne. More at SpaceFlight Industries
Russian S7 space firm to cancel deal with Ukraine's rocket maker Moscow (Sputnik) Mar 26, 2019 Russia's privately-owned S7 Space company will scrap a contract it has with a Ukrainian state rocket maker, Yuzhmash, on the production of 12 Zenit launch vehicles, the Russian firm's co-owner told Sputnik. "Yes, we are going to," Natalya Fileva, who owns the company together with her husband, Vladislav Filev, said, adding she could not name the exact date of the cancellation. Sputnik first learned about the plan to terminate the 2017 deal on the production of rockets for S7 Space's Sea Laun ... read more
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