SpaceX delays launch to run additional tests on rocket – Spaceflight Now



Stock photo of a previous Falcon 9 rocket on the launch pad of Complex 40 in Cape Canaveral. Credit: SpaceX

SpaceX has delayed the launch of the commercial communications satellite SES 12 from Cape Canaveral until Monday to carry out additional tests on the second stage of the Falcon 9 rocket, according to reports on Thursday.

The launch of the 40 Cape Canaveral complex platform is now scheduled for Monday at 12:29 a.m. EDT (0429 GMT), opening a four-hour launch window.

SpaceX announced the three-day delay in a tweet on Thursday.

Stop since Friday's launch attempt to run additional tests in the second stage of Falcon 9. The rocket and the payload are in good health. Currently working for the launch of SES-12 on June 4 from platform 40 in Florida.

– SpaceX (@SpaceX) May 31, 2018

The launch will mark the 11th SpaceX mission of the year, and the 56th launch of a Falcon 9 rocket since the commercial reinforcement was launched in June 2010.

SpaceX tested the first reused stage of the Falcon 9 rocket for the SES 12 mission on May 24 at Cape Canaveral, and the teams encapsulated the commercial payload payload and attached it to the launcher from the static fire test last week. .

The first stage of Falcon 9 scheduled to be launched with SES 12 was previously used to send the US Air Force's X-37B spacecraft to the orbit of the Kennedy Space Center in September 2017. The next mission will mark the thirteenth time that SpaceX has relaunched an accelerator previously flown.

SpaceX does not plan to recover the first stage of the mission next week because the amplifier was built using an earlier design of the Falcon 9 rockets, kno wn as the "Block 4". The second flight stage of the SES 12 mission is based on the updated version of "Block 5" of the Falcon 9.

Built by Airbus Defense and Space, the SES 12 communications satellite will connect the Middle East, Asia-Pacific and Australia with Ku band beams, which provide video and data retransmission, television transmission and government services. In addition to the Ku six-band payload, SES 12 has 72 high-performance beams designed for broadband connectivity, plus a built-in digital processor to adjust bandwidth to meet changing customer demand.

The Falcon 9 rocket will place the 11,867 – 5,383 kilogram spacecraft in a "supersynchronous" elliptical transfer orbit that ranges from 182 miles (294 kilometers) at the lowest point to more than 36,000 miles (approximately 58,500 kilometers) at its highest point.

On-board plasma thrusters The SES 12 satellite will remodel its orbit to a circular perch above the equator and maneuver the relay station to a geostationary slot at 95 degrees east longitude, where it will join the SES 8 spacecraft and replace the satellite NSS 6 aged.

Predictors of the 45th Air Force Squadron of the United States Air Force forecast a 70 percent favorable weather probability during the launch window early Monday morning.

"The afternoon and afternoon storms are expected to continue over Central Florida for the next few days, although the duration and duration of the lesson will be transferred daily to the weekend," the meteorologists wrote in an emitted perspective. Thursday. "On Sunday, a weak surface limit begins to move toward the southeastern US, which increases the pressure gradient on the space coast, and the winds will become gusty from west to southwest when the front approaches north. of Florida during the launch window. "The main weather concern for the launch window on June 4 is the takeoff."

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Follow Stephen Clark on Twitter: @ StephenClark1 .


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