Автор tnt22, 30.07.2019 20:28:51
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ЦитатаPirat5 написал:ЦитатаСтарый написал:2. очень тяжёлая ПН. Поэтому тяжёлые спутники отправляются только на ступенях совершающих последний полёт? Нет? Если рейс последний - значит доверие к ступени невысокое. Пускать в последний рейс самую тяжёлую (=самую дорогую) ПН - лотерея, может ступень и не вытянет. Одна из основных причин - трещины в лопатках турбин, которые прокачивают топливо? Полагаю, что конкретная ступень годится под конкретную ПН только после конкретного осмотра. И не зависимо от числа повторного использования.
ЦитатаСтарый написал:2. очень тяжёлая ПН. Поэтому тяжёлые спутники отправляются только на ступенях совершающих последний полёт? Нет?
ЦитатаPirat5 написал: ЦитатаСтарый написал:Дык может 1. ступени трёхразовые А как же планирование (весной 2019) ядра В1046 на 4й полёт в качестве Abort-in-flight ? Значит не только трёхразовые. Или не все трёхразовые.
ЦитатаСтарый написал:Дык может 1. ступени трёхразовые
ЦитатаSpaceX targets Saturday launch with Amos 17 communications satelliteAugust 1, 2019 | Stephen ClarkThe test-firing of a SpaceX Falcon 9 rocket Wednesday evening kicked up a cloud of exhaust at Cape Canaveral's Complex 40 launch pad. Credit: Spaceflight NowSpaceX test-fired a Falcon 9 rocket at Cape Canaveral on Wednesday evening, clearing the way for liftoff with the Israeli-owned Amos 17 commercial communications satellite Saturday, pending favorable weather and the completion of final preflight data assessments.After completing a mock countdown, the Falcon 9's nine Merlin 1D first stage engines ignited for several seconds at 8 p.m. EDT Wednesday (0000 GMT Thursday) at Cape Canaveral's Complex 40 launch pad as hold-down clamps kept the rocket firmly on the ground.SpaceX said the launch team was "assessing data" Wednesday night after the test-firing, which is a customer milestone in all SpaceX launch campaigns. Ground crews planned to remove the rocket fr om the launch pad Thursday and return to a hangar south of pad 40 for attachment of the Amos 17 spacecraft, already encapsulated inside its payload shroud.The Boeing-built Amos 17 satellite is owned by Spacecom Ltd., an Israeli company based in Tel Aviv. The last time a Spacecom-owned satellite was to launch on a SpaceX rocket, the spacecraft was destroyed during an explosion minutes before a planned static fire test.Since that accident, SpaceX has no longer placed one of its customer payloads on the rocket for the static fire test.Liftoff of the Falcon 9 rocket with Amos 17 is scheduled for Saturday during a launch window opening at 6:52 p.m. EDT (2252 GMT) and extending to 8:20 p.m. EDT (0020 GMT).The reused Falcon 9 first stage, seen here with a new second stage attached, assigned to launch the Amos 17 spacecraft will fly without landing legs. Credit: SpacecomSpaceX's team at Cape Canaveral aims to launch Amos 17 just nine days after the last launch from pad 40, which occurred July 25 with a Dragon supply ship heading for the International Space Station.The nine-day turnaround at pad 40 would be the shortest span between liftoffs from the same launch pad in SpaceX's history.The Falcon 9 rocket launching with Amos 17 will fly in expendable mode without any landing legs. The heavy weight of Amos 17, at some 6.5 metric tons (14,330 pounds) fully fueled, requires all of the Falcon 9's lift performance to deliver it into a geostationary transfer orbit stretching more than 22,000 miles (nearly 36,000 kilometers) over the equator.This will be the second time SpaceX's has flown one of its Falcon 9 rockets in the new-generation "Block 5″ configuration without attempting a recovery of the first stage.The booster launching with Amos 17 previously flew two times from Cape Canaveral last year to send the Telstar 19 VANTAGE and Es'hail 2 communications satellites toward orbit, then returned to landings on SpaceX's drone ship in the Atlantic Ocean for refurbishment and reuse.Amos 17 will use its own engine to circularize its orbit more than 22,000 miles over the equator, wh ere it will park at 17 degrees east longitude. In geostationary orbit, Amos 17's orbital velocity will match the rate of Earth's rotation, giving the satellite a fixed geographic coverage area over sub-Saharan Africa, Europe, Asia and the Middle East.Spacecom says it has a $58 million sales backlog for communication services to the African market using Amos 17. The operator says Amos 17 is designed for a 20-year lifetime after launch."Spacecom has long been the pioneering leader in providing international satellite communication services in Israel and worldwide," said David Pollack, Spacecom's president and CEO. "Amos 17's launch is a meaningful and strategic milestone that boosts Israel's continued presence in space and our corporate growth."The Amos 17 satellite during encapsulation inside the Falcon 9 payload fairing. Credit: Spacecom Ltd.Amos 17 will replace the Amos 5 satellite at 17 degrees east, which failed in 2015. The new satellite carries C-band, Ku-band and Ka-band communications payloads to provide television broadcast, broadband Internet and other networking and data relay services.Spacecom purchased the Amos 17 satellite in 2016 from Boeing under a $161 million contract.The launch of Amos 17 will be the 10th flight by SpaceX's Falcon rocket family this year.But the official weather forecast suggests SpaceX's launch team will contend with stormy conditions during the countdown Saturday.There is a 70 percent chance of unfavorable weather during Saturday's launch window, according to an outlook issued by the U.S. Air Force's 45th Weather Squadron.
ЦитатаKZMAFDC 9/1279 (A1177/19) - FL..AIRSPACE CAPE CANAVERAL FL..TEMPORARY FLT RESTRICTION.PURSUANT TO 14 CFR SECTION 91.143, FLT LIMITATION IN THE PROXIMITY OF SPACE FLT OPS, OPS BY FAA CERT PILOTS OR U.S.REG ACFT ARE PROHIBITED WI AN AREA DEFINED AS 285116N0804219W (OMN141034.4) TO 290730N0803000W (OMN108033.9) THEN CLOCKWISE VIA A 30 NM ARC CENTERED AT 283703N0803647W (OMN147048.7) TO281330N0801600W (OMN145078.4) TO 282501N0803029W (OMN149061.9) TO282501N0803759W (OMN155058.8) TO 282501N0804144W (OMN157057.4) TO283121N0804349W (OMN157050.9) TO 283801N0804701W (OMN157043.7) TO284910N0805044W (OMN154032.2) TO 285116N0804714W (OMN148031.8) TOPOINT OF ORIGIN.SFC-FL180.MIAMI / ZMA / ARTCC, PHONE 305-716-1589, IS THE FAA COORDINATION FACILITY. THIS AREA ENCOMPASSES R2932, R2933, R2934, AND W497A.THOSE PORTIONS OF W137F, W137G, IN THE ABOVE DISRIPTION ARE EXCLUDED.ADDITIONAL WARNING AND RESTRICTED AREAS MAY ACT.PILOTS MUST CONSULT ALL NOTAMS REGARDING THIS OP AND MAY CONTACT ZMA FOR CURRENT AIRSPACE STATUS.03 AUG 22:15 2019 UNTIL 04 AUG 01:17 2019.CREATED: 31 JUL 21:31 2019
Цитата SpaceXFleet Updates @SpaceXFleet 2 ч. назадGO Navigator appears to have just performed a 180° turn and is now facing back in the direction of Port Canaveral.The ship is ~275km offshore. Ms. Tree has not reported a position recently which would allow me to determine if the ship has performed the same maneuver.1 ч. назадUpdate: GO Navigator is continuing in the direction of Port Canaveral at full steam. 8.6 knots if far faster than the speed of ~7.2 knots they headed out at.No position update from Ms. Tree yet. https://twitter.com/SpaceXFleet/status/1157022167953022978 ...
Цитата Chris B - NSF @NASASpaceflight 21 мин. назадWe understand SpaceX's Falcon 9/AMOS-17 launch will slip a few days (the weather was going to be poor anyway!) due to an apparent requirement to conduct a second Static Fire test on Friday (NET).Picture: @julia_bergeron
Цитата SpaceX Подлинная учетная запись @SpaceX 39 мин. назадTeam is setting up an additional static fire test of Falcon 9 after replacing a suspect valve. Will confirm updated target launch date for AMOS-17 once complete.
Цитата08/02/2019 01:24 Stephen ClarkSpaceX is set to test-fire a Falcon 9 rocket for the second time Friday after replacing a valve following an earlier static fire test Wednesday. The move is expected to postpone the Falcon 9 rocket's launch with the Amos 17 commercial communications satellite to no earlier than Monday.The launch of the Falcon 9 rocket with Amos 17 was previously scheduled for Saturday evening.
Цитата Julia @julia_bergeron 25 мин. назадThrough the Cape haze and rain clouds the AMOS-17 booster appears vertical at LC 40. Launch date pending a second static fire which may occur today. #SpaceX #AMOS17
ЦитатаAfter 2016 explosion, satellite company will again entrust payload to SpaceX for launch By CHABELI HERRERAORLANDO SENTINEL | AUG 02, 2019 | 8:34 AMThe Amos-17 satellite, built by Boeing for Isreal's Spacecom, will provide connectivity to parts of Europe, the Middle East and Africa. (WICKERING GLADYS P/Boeing)An Israeli satellite is scheduled to head to orbit on a SpaceX launch no earlier than Monday, marking the first time since a 2016 explosion that the satellite provider will entrust its payload to Elon Musk's rocket company.Tel Aviv-based Spacecom will launch its Amos-17 satellite on a SpaceX Falcon 9 rocket from Cape Canaveral Air Force Station's launch complex 40. The launch window is expected to open Monday evening, though a new time has not yet been confirmed. : In September 2016, a Falcon 9 rocket was destroyed at the very pad from which SpaceX plans to launch this weekend. It was carrying Amos-6 for Spacecom, a $200 million satellite that was leasing some of its capabilities to Facebook to provide Internet connectivity to developing areas.The explosion happened while propellant was being loaded into the rocket during a static fire test. It wasn't until months later in early 2017 that SpaceX pinned down what it believed to be the cause of the accident: An issue with a pressure vessel, known as a COPV, in the second-stage liquid oxygen tank.In September 2016, a Falcon 9 rocket was destroyed at the very pad from which SpaceX plans to launch this weekend. It was carrying Amos-6 for Spacecom, a $200 million satellite that was leasing some of its capabilities to Facebook to provide Internet connectivity to developing areas.A static fire test for the upcoming launch went by without incident Wednesday night, but the company said Thursday evening that it would plan an additional static fire test after it replaced a "suspect valve." That moves the launch date from Saturday, as planned, to no earlier than Monday.This launch will be free for Spacecom, which endeavors to offer TV, internet and data satellite services to part of Europe, the Middle East and Africa with its Amos fleet. This particular satellite, Amos-17, was built by Boeing and includes Boeing's first 3D-printed metal antenna, a one-piece unit that the company says creates greater reliability while using fewer parts. The antennas typically require multi-part assembly.The 3D-printed part, Boeing hopes, will reduce assembly time and weight.For the launch, SpaceX is making modifications to its typical model of landing boosters back on the Space Coast when it launches locally. The Falcon 9 is flying in expendable mode, meaning it won't have landing legs.The choice helps Falcon 9 focus on lifting the heavy, 14,330-pound Amos-17 satellite, but means the previously flown booster won't be recovered.The launch will be a quick turnaround for SpaceX, which just last week launched an International Space Station resupply mission from pad 40. Muggy weather and high humidity for that launch helped the sound of sonic booms, caused by the booster landing, carry as far west as Orlando. With no landing, don't expect that this time.Weather was looking bad for the weekend, with the Air Force's 45th Weather Squadron forecasting conditions that were only 30% favorable for a Saturday launch due in part to a tropical wave that is expected to move across the western Bahamas and closer to the Space Coast. Conditions improved slightly to 40% "go" for launch on Sunday.The Air Force has not yet released a forecast for Monday, the new launch date.
Цитата Julia @julia_bergeron 4 ч. назадWelcome back, for now, GO Ms. Tree to Port Canaveral. Hopefully we see a second static fire today/tonight and they get the all clear to go back out. #SpaceXFleet
Цитата08/02/2019 16:36 Stephen ClarkSpaceX's Falcon 9 rocket is vertical at pad 40 this morning, where teams are gearing up for another test-firing of the booster's nine first stage engines today.Engineers replaced a valve on the rocket after a previous static fire Wednesday evening, and SpaceX has elected redo the test-firing before proceeding with the launch of the Amos 17 communications satellite, which has been delayed from Saturday to no earlier than Monday.
Цитата Ken Kremer @ken_kremer 26 мин. назад#AMOS17 Prelaunch brief today David Pollack, @AMOSSpacecom CEO; Chris Johnson, Boeing Pres Sat Systems Intl. This $250mil satcom 4 Africa has most advanced digital channelizer C, Ka, Ku bands. Hope for static fire this evening-weather dependent. #SpaceX #Falcon9 launch NET Aug 5
Цитата08/02/2019 23:47 Stephen ClarkSteady waves of rain showers have passed through the Cape Canaveral area this afternoon. SpaceX's Falcon 9 rocket remains vertical at pad 40 at this time, but there's no indication of when the static fire might occur.Earlier today, officials from Spacecom Ltd., which owns the Amos 17 satellite set for launch on the Falcon 9, said the static fire might happen this evening.
Цитата08/03/2019 14:56 Stephen ClarkSpaceX rotated the Falcon 9 rocket horizontal at pad 40 earlier this morning, suggesting no static fire attempt is imminent. The company was expected to conduct a second test-firing on the rocket Friday, following a valve replacement to resolve an issue detected during an earlier static fire test Wednesday.
Цитата Chris B - NSF @NASASpaceflight 26 мин. назадThere's a NET of 4pm Eastern today for the second Static Fire, but that'll be the opening of the window (which last for several hours).
Цитата08/03/2019 18:14 Stephen ClarkThe Falcon 9 rocket is again standing vertical at pad 40. A static fire test could occur as soon as this afternoon.
Цитата SpaceXFleet Updates @SpaceXFleet 1 ч. назадJust 10 hours after arriving, GO Navigator is heading back out to sea. The launch date for AMOS-17 is still not locked down but this is a promising sign!1 ч. назадGO Navigator departs via Jetty Park Webcam. The ship is in its fairing recovery configuration and has bumpers and a cradle installed. These are used to lift and secure a fairing half from the water.