Znów nowa wersja indyjskiej rakiety 01.04. o o 03:57:00 z Sriharikota wystrzelona została RN PSLV-QL (pierwszy lot wersji), która wyniosła w T+16' 24"
na orbitę o parametrach: hp=749 km, ha=749 km, i=98,38° satelitę EMISAT, w T+1h 49' 01" na orbitę o parametrach:
hp=504 km, ha=504 km, i=97,47° nanosatelity Flock-4A (20 sztuk), Lemur-2 (4 sztuki), Astrocast-2, M6P, BlueWalker 1
i Aistechsat-3. Po kolejnych zmianach orbity w T+3h 00' 58" na orbicie o parametrach: hp=485 km, ha=485 km, i=97,47°
znajdzie się czwarty stopień rakiety z eksperymentami AIS, APRS oraz ARIS.
http://lk.astronautilus.pl/n190401.htm#01Pierwszy start PSLV-QL BY MICHAŁ MOROZ ON 7 KWIETNIA 2019
Debiutancki lot PSLV-QL / ISRONa początku kwietnia Indie przeprowadziły pierwszy lot rakiety PSLV-QL. W tej konfiguracji posiada ona cztery boostery na paliwo stałe.
Czterdziesty siódmy start rakiety z rodziny PSLV (Polar Satellite Launch Vehicle) odbył się 1 kwietnia o godzinie 5:37 CEST. Nowa konfiguracja pozwoliła na wyniesienie szeregu ładunków na trzy różne orbity docelowe.
Głównym ładunkiem był EMISAT zbudowany przez indyjską Agencję Badan i Rozwoju Obronności DRDO. Zadania, jakie mają być wykonywane przez EMISAT, nie zostały podane do publicznej wiadomości. Po 16 minutach i 24 sekundach lotu EMISAT trafił na orbitę o parametrach 749 x 749 km i inklinacji 98,38 stopni.
Pakiet 28 satelitów został następnie umieszczony na orbicie 504 x 504 km i inklinacji 97,47 stopni. Były to kolejno 20 satelitów obserwacji Ziemi z serii Flock-4A amerykańskiej spółki Planet, 4 sztuki satelitów monitoringu morskiego Lemur-2 spółki Spire, szwajcarski demonstrator konstelacji komunikacyjnej Astrocast-2, litewskie demonstratory M6P i BlueWalker 1 spółki Nanoavionics oraz hiszpański satelita Aistechsat-3, służący do monitoringu sygnału AIS.
Czwarty stopień rakiety PSLV-QL następnie obniżył pułap na orbitę 485 km. Jest on wyposażony również w panele słoneczne, pozwalając na obsługę zamontowanych na niej eksperymentów związanych z technologiami AIS, APRS oraz ARIS. Był to drugi indyjski lot w 2019 roku.
https://kosmonauta.net/2019/04/pierwszy-start-pslv-ql/Indian military satellite, 20 more Planet imaging CubeSats launched by PSLVApril 1, 2019 Stephen Clark
A 145-foot-tall (44-meter) Polar Satellite Launch Vehicle lifts off from the Satish Dhawan Space Center on Monday. Credit: ISRO(...) The launcher initially headed toward the southeast from the Second Launch Pad at the space center. The four strap-on solid rocket motors burned out and jettisoned around 70 seconds into the mission, followed by burnout and separation of the PSLV’s solid-fueled core stage.
A hydrazine-fueled Vikas engine on the PSLV’s second stage fired next, followed by ignition of the rocket’s third stage, a solid-fueled motor. Finally, the PSLV’s fourth stage — known as the PS4 — fired its twin thrusters, which also burn hydrazine fuel, to place the EMISat spacecraft into an orbit roughly 465 miles (749 kilometers) above Earth, with an inclination of about 98.4 degrees to the equator.
The 961-pound (436-kilogram)
EMISat satellite, a joint project between the Indian Space Research Organization and India’s Defense Research and Development Organization, separated from the PSLV fourth stage around 17 minutes after liftoff. A video camera on the fourth stage showed the EMISat satellite, encased in golden insulation, flying away from the rocket over the Indian Ocean.
A frame from the live broadcast of the PSLV launch showed EMISat in a clean room before its mounting atop the PSLV. Credit: ISRO/Doordarshan TVEMISat carries instrumentation to detect, locate and characterize electromagnetic signals, such as those transmitted by military radars.
Two more firings by the PSLV fourth stage maneuvered the rocket into a lower orbit at an altitude of about 313 miles (504 kilometers), and slightly adjusted the orbit’s inclination to 97.5 degrees. The maneuvers set up for separation of 28 nanosatellites from companies in the United States, Lithuania, Spain and Switzerland.
The CubeSats launched inside spring-loaded modules, and the PSLV commanded the secondary payloads to deploy one-at-a-time over a sequence that concluded just prior to the two-hour mark in the mission.
The first nanosatellite to separate from the PSLV’s fourth stage was
AISTECHSAT 3, a roughly 5-pound (2.3-kilogram) CubeSat for the Spanish company Aistech. The AISTECHSAT 3 nanosatellite is Aistech’s second spacecraft to launch into orbit, and will serve as a pathfinder for the company’s planned network of satellites providing aviation tracking and remote asset management services.
A Lithuanian company named NanoAvionics had two satellites fastened atop the PSLV, and they separated from the rocket next.
The first of the NanoAvionics satellites to deploy was
M6P, a 15-pound (6.8-kilogram) spacecraft that hosts two commercial payloads for SpaceWorks Orbital and Lacuna Space, two companies designing communications and tracking networks using tiny satellites as relay nodes to collect and retransmit data from devices and sensors around the world.
The other NanoAvionics satellite launched was
BlueWalker 1. It will test unspecified “patented technologies” in space for AST & Science, a U.S.-based smallsat startup company which acquired a controlling interest in NanoAvionics last year, according to company statements.
NanoAvionics announced in February that it was building three low Earth orbit nanosatellites for AST & Science, the first of which is BlueWalker 1. The three nanosatellites “will be used to test a range of experimental payloads for defense and commercial customers, and will include a Q/V-band satellite for test and evaluation,” NanoAvionics said.
NanoAvionics said it took only one month to build the 22-pound (10-kilogram) BlueWalker 1 spacecraft and integrate its payload.
“The BlueWalker 1 mission demonstrates how NanoAvionics’ pre-integrated nano-satellite bus enables faster, more responsive approaches for advancing space technology readiness,” said Vytenis Buzas, CEO of NanoAvionics.
One of Aistech’s CubeSats. Credit: AistechThe second satellite for Astrocast, a Swiss company aiming to build a network of 64 data relay satellites in low Earth orbit, was also launched aboard the PSLV. The shoebox-sized, 8.4-pound (3.8-kilogram)
Astrocast 0.2 spacecraft joins Astrocast 0.1, which launched on a SpaceX Falcon 9 rocket in December, to demonstrate the company’s concept of using nanosatellites to collect and downlink data from weather buoys, wellhead sensors, pollution monitors and other remote stations.
Twenty of the secondary payloads launched on the PSLV-C45 mission are owned by Planet, a San Francisco-based company which operates more than 100 Earth-imaging satellites. Planet’s newest 20
Dove nanosatellites, each about the size of a toaster oven, join the company’s imaging fleet providing daily views of every location on Earth.
Four Lemur-2 CubeSats owned by Spire Global were also aboard the launch, adding to Spire’s fleet of more than 70 active nanosatellites tracking ships and collecting atmospheric data that could one day improve the accuracy of weather prediction models.
The new batch of Dove CubeSats are part of a group named “Flock 4a” by Planet.“Flock 4a will join our current constellation of 100+ Doves, replenishing our on-orbit fleet and furthering our daily global monitoring mission,” wrote Mike Safyan, Planet’s vice president of launch, in a post on the company’s website. “However, these Dove satellites aren’t solely for replenishment. They’re equipped with the latest technology – upgrades to our imaging chain to improve image sharpness, radiometric consistency, and spectral precision – and push the boundaries of what our on-orbit Doves are capable of.”
Planet sells its imagery to commercial clients and governments, including U.S. intelligence agencies. (...)
https://spaceflightnow.com/2019/04/01/indian-military-satellite-20-more-planet-imaging-cubesats-aboard-successful-pslv-launch/https://spaceflightnow.com/2019/03/31/indias-pslv-poised-for-launch-with-29-satellites/https://spaceflightnow.com/2019/04/01/pslv-c45-mission-status-center/Isro launches intelligence satellite EMISAT and 28 other satellites from US, Spain(...) The Indian Space Research Organisation (Isro) on Monday launched the EMISAT satellite along with 28 other satellites from other nations, including 24 from the US from the Sriharikota launch station at 9:27 am.
Isro's PSLV C45 lifted off from the Satish Dhawan Space Centre carrying India's EMISAT and 28 satellites from global customers, including the US.
The mission would witness Isro placing payloads in three orbits and conducting space experiments for the first time.
The EMISAT satellite is an intelligence satellite. According to Isro's statement, the EMISAT is aimed at electromagnetic measurement.
This comes days after DRDO's successful testing of an anti-satellite missile with
Mission Shakti that boosts India's national security. (...)
https://www.indiatoday.in/science/story/isro-emisat-satellite-28-countries-pslv-1491024-2019-04-01https://space.skyrocket.de/doc_sdat/emisat.htmhttps://space.skyrocket.de/doc_sdat/flock-1.htmhttps://space.skyrocket.de/doc_sdat/lemur-2.htmhttps://space.skyrocket.de/doc_sdat/bluewalker-1.htmhttps://space.skyrocket.de/doc_sdat/m6p.htmhttps://space.skyrocket.de/doc_sdat/astrocast-0.htmhttps://space.skyrocket.de/doc_sdat/aistechsat-1.htmhttps://space.skyrocket.de/doc_sdat/ais-aprs-aris.htm
Wątek: Starty rakiet (II kwartał 2019 roku) (Przeczytany 34948 razy)