Połowiczny sukces Falcona 16.02. o 03:59 z Cape Canaveral wystartowała RN Falcon-9R. Wyniosła ona w T+44' na orbitę o parametrach:
hp=190 km, ha=380 km, i=53,00° 60 satelitów Starlink (misja Starlink 20/v1.0 L19).
Pierwszy stopień RN (B1059.6)
w T+8' 45" miał wylądować na barce ASDS OCISLY/JRTI na Atlantyku, jednak spadł do niego w pobliżu barkihttp://lk.astronautilus.pl/n210216.htm#01SpaceX Starlink 19 launch & Falcon 9 first stage failed landing, 16 February 202112 842 wyświetlenia•16 lut 2021
Falcon 9 wynosi 19. paczkę Starlinków BY KRZYSZTOF KANAWKA ON 17 LUTEGO 2021
(...) Lot przebiegł prawidłowo i satelity zostały uwolnione na wstępnej orbicie okołoziemskiej, skąd pod własnym napędem dotrą do operacyjnej orbity o wysokości około 550 km. W przypadku tego startu uwolnienie satelitów nastąpiło po ponad godzinie od startu. Proces podwyższania orbity zajmie kilka tygodni.
Start dziewiętnastej paczki (osiemnastej operacyjnej) satelitów Starlink – 16.02.2021 / Credits – SpaceX
Tym razem nie udało się odzyskać pierwszego stopnia Falcona 9. Na obrazach z platformy morskiej można było zobaczyć przez chwilę pojaśnienie w części kadru. Tym razem rakieta nie “trafiła” w platformę morską. Dla tego stopnia (B1059) było to już szóste wykorzystanie w locie. (...)
https://kosmonauta.net/2021/02/falcon-9-wynosi-19-paczke-starlinkow/Photos: Falcon 9 test-fired before Starlink launchFebruary 14, 2021 Stephen Clark
Credit: Stephen Clark / Spaceflight Nowhttps://spaceflightnow.com/2021/02/14/photos-falcon-9-test-fired-before-starlink-launch/SpaceX successfully deploys 60 Starlink satellites, but loses booster on descentFebruary 16, 2021 Stephen Clark
A Falcon 9 rocket takes off from Cape Canaveral Space Force Station at 10:59 p.m. EST Monday (0359 GMT Tuesday) with 60 more Starlink internet satellites. Credit: Stephen Clark / Spaceflight Now(...) But something appeared to go wrong with the entry burn. A live video feed from an on-board camera showed the rocket trailing a fiery plume after the end of the entry burn, moments before telemetry data from the vehicle cut off. A camera from SpaceX’s drone ship showed an orange glow in the sky as the rocket presumably crashed into the Atlantic.
The booster flown on Monday’s mission — designated B1059 — was on its sixth trip to space. SpaceX says the most recent version of the Falcon 9 booster can make 10 flights with only inspections and minor refurbishment in between missions, and can fly on additional launches after a major overhaul.
SpaceX’s most-used Falcon 9 booster has flown eight times.
The company’s recovery and reuse of Falcon 9 first stages is unparalleled in the launch industry. No other commercial launch company has landed and reused boosters on orbital-class missions. Going into Monday night’s launch, SpaceX had recovered Falcon booster cores 74 times since 2015, including 24 straight successful landings since the last time the company lost a first stage in March 2020.
The loss of a rocket stage will almost certainly garner an investigation at SpaceX, and could impact the company’s near-term launch schedule. SpaceX has six Falcon 9 boosters left in its inventory. Three of those are earmarked for future missions for NASA and the U.S. Space Force: SpaceX’s next crew launch to the International Space Station in April, and launches with a GPS satellite and NASA asteroid probe in July.
Credit: Stephen Clark / Spaceflight NowSpaceX is building more Falcon cores, including boosters for the next triple-body Falcon Heavy launch later this year, but none are on the cusp of reaching the launch pad.
While the once-experimental rocket landings are a secondary objective on each mission, the successful recovery of Falcon boosters is more critical than ever for SpaceX’s ability to maintain its high-tempo launch cadence, especially for flights adding to the company’s Starlink internet network. The launch Monday night was SpaceX’s third in less than a month dedicated to the multibillion-dollar Starlink program, and officials planned two more Starlink missions before the end of February.
Before Monday night’s launch, SpaceX planned the next Falcon 9 flight — using a different first stage booster — from pad 39A at the Kennedy Space Center as soon as 12:55 a.m. EST (0555 GMT) Wednesday. It was not immediately clear how the booster’s failed landing might impact those plans.
SpaceX officials did not provide any details on why the booster failed to land on the drone ship Monday night. The second stage accomplished the primary goal of the flight, and used two burns of its Merlin-Vacuum, or MVAC, engine to inject the 60 Starlink satellites into an on-target orbit less than 200 miles (300 kilometers) above Earth. (...)
https://spaceflightnow.com/2021/02/16/spacex-successfully-deploys-60-more-starlink-satellites-but-loses-booster-on-descent/https://spaceflightnow.com/2021/02/14/falcon-9-starlink-v10-l19-mission-status-center/SpaceX Launches Six-Times-Flown Falcon 9, Misses Drone Ship LandingBy Ben Evans, on February 16th, 2021
B1059 roars aloft at 10:59 p.m. EST Monday, with the Air Force Thunderbirds demonstration team at Daytona Beach, Fla., visible in the foreground. Photo Credit: Mike Killian/AmericaSpace(...) It was a sad end for a booster which has flown no fewer than six times in a little over 14 months and, in so doing, closes its career as the third-most-flown member of SpaceX’s fleet to date. B1059 first entered active operational service to deliver a pair of Dragon cargo missions to the International Space Station (ISS) on 5 December 2019 and again on 6 March 2020.
These two flights marked the final pair of station-bound flights under the terms of the first-phase Commercial Resupply Services (CRS1) contract with NASA, originally signed way back in December 2008. Between them, they delivered over 11,600 pounds (5,200 kg) of pressurized and unpressurized payloads, equipment and supplies to the station’s incumbent Expedition 61 and 62 crews.
These payloads included experiments in combustion science, muscle loss, barley malting and foam-pellet manufacturing for Adidas performance midsoles.
They also featured Japan’s Hyperspectral Imager Suite (HISUI) for emplacement onto the Exposed Facility (EF) of the Kibo lab and Europe’s Bartolomeo payloads-anchoring platform, whose installation onto the hull of the Columbus lab was effected by spacewalking astronauts last month.
Both of these launches were preceded by Static Fire Tests,
but B1059’s third launch on 13 June 2020 represented the first Falcon 9 to fly without having been put through this pre-flight ritual, seen as an indicator of the system’s growing maturity.
This mission also boasted previously-flown payload fairing “halves” and carried 58 Starlink internet communications satellites and three SkySat Earth-imaging satellites, provided by San Francisco, Calif.-headquartered Planet Labs, Inc. The launch was notable in that the 45th Weather Squadron team overseeing the flight was an all-female affair for the first time.
A fourth flight on 30 August—SpaceX’s 100th—was originally intended to form part of a record-setting “double-header” weekend, with two missions set to fly only nine hours apart. But although B1059 successfully roared aloft with Argentina’s SAOCOM-1B radar-imaging satellite and a pair of “rideshare” payloads, the other mission was postponed due to a steadily worsening weather outlook.
Still, B1059’s fourth foray marked the first polar-orbiting mission from the Space Coast since February 1969, as well as the first time that a Static Fire Test had not been performed prior to the launch of a major commercial customer. And with the other mission launching successfully only 3.5 days later, B1059 also played its part in securing a record for the shortest interval between any two Falcon 9 flights.More recently, last 19 December, B1059 became only the fourth Falcon 9 booster to log a fifth launch when she delivered the highly secretive NROL-108 payload to orbit on behalf of the National Reconnaissance Office.
Although this marked the fourth national security payload to be lofted by SpaceX, it was the first time in history that it had been attempted aboard a previously-flown Falcon 9 core.
With five missions thus under her belt, the blackened and scorched B1059 core and a sparkling-new second stage
were rolled out to SLC-40 last Friday and—for the first time since last March—were put through a Static Fire Test. (...)
It was the first time that SpaceX had failed to land a booster in the last 24 attempts. Last spring, two Falcon 9s missed the drone ship, due to the provision of incorrect wind-speed data and residual cleaning fluid trapped in a sensor.
And the loss of B1059 carries particular resonance, as it has set a number of landing milestones on its previous flights.
On its first mission
in December 2019 it achieved SpaceX’s 20th successful ASDS touchdown and on its fourth flight
in August 2020 it made the 20th successful solid-ground landing. And
in March 2020 it recorded the 50th overall landing of a Falcon-class vehicle—inclusive of drone-ship or solid-ground touchdowns—and
last December it logged the 70th time that a SpaceX bird had been successfully recovered intact.
https://www.americaspace.com/2021/02/16/spacex-launches-six-times-flown-falcon-9-misses-drone-ship-landing/#more-163691https://www.nasaspaceflight.com/2021/02/starlink-l19/https://www.teslarati.com/spacex-starlink-doubleheader-landing-failure/AA
https://www.forum.kosmonauta.net/index.php?topic=3641.msg158245#msg158245https://space.skyrocket.de/doc_sdat/starlink-v1-0.htm
Wątek: Falcon 9 | Starlink-19 | 16.02.2021 (Przeczytany 6604 razy)