SpaceX Blasts Biggest High Speed Communications Satellite to Orbit for Inmarsat

SpaceX Falcon 9 rocket carrying commercial Inmarsat 5 F4 broadband satellite blasts off to geostationary orbit at twilight at 7:20 p.m. EDT from Launch Complex 39A on 15 May 2017 from NASA’s Kennedy Space Center in Florida. Credit: Ken Kremer/Kenkremer.com

KENNEDY SPACE CENTER, FL – SpaceX blasted the “largest and most complicated communications satellite ever built to orbit” for London based Inmarset at twilight this evening, May 15, from NASA’s Kennedy Space Center.

In fact the Inmarsat 5F4 satellite is so powerful that it has the potential to reach “hundreds of millions of customers” the Inmarsat CEO Rupert Pierce told Universe Today in a post launch interview.

SpaceX is targeting twilight thunder with the firms Falcon 9 rocketing skyward from the Florida Space Coast on Monday 15 carrying a commercial High-Speed broadband satellite for London based Inmarsat.

Blastoff of the Inmarsat-5 Flight 4 communications satellite for commercial broadband provider Inmarsat took place right on time early Monday evening, May 15 at 7:21 p.m. EDT (or 23:21 UTC) from SpaceX’s seaside Launch Complex 39A on NASA’s Kennedy Space Center in Florida.

The newly built 229-foot-tall (70-meter) SpaceX Falcon 9 successfully delivered the huge 6100 kg Inmarsat-5 F4 satellite to a Geostationary Transfer Orbit (GTO).

“Satellite deployment success!” Inmarsat announced.

“#I5F4 has been released & is flying high on its way to geostationary orbit! Safe journey! Thanks for a great launch SpaceX!”

All 9 Merlin 1D first stage engines firing beautifully as SpaceX Falcon 9 arcs over down range successfully carrying Inmarsat 5F4 #I5F4 to geostationary transfer orbit at twilight after liftoff from Launch Complex 39A on 15 May 2017 from NASA’s Kennedy Space Center in Florida. Credit: Ken Kremer/Kenkremer.com

The integrated Falcon 9/Inmarsat-5 F4 were rolled out to the KSC launch pad on Sunday to begin final preparations and were erected at the pad this morning for Monday’s liftoff.

The 7 meter long satellite was deployed approximately 32 minutes after launch when it will come under the command of the Boeing and Inmarsat satellite operations teams based at the Boeing facility in El Segundo.

It will now be “manoeuvred to its geostationary orbit, 35,786km (22,236 miles) above Earth, where it will deploy its solar arrays and reflectors and undergo intensive payload testing before beginning commercial service.”

SpaceX Falcon 9 rocket carrying commercial Inmarsat 5 F4 broadband satellite accelerates to orbit leaving exhaust trail in its wake after twilight launch at 7:20 p.m. EDT from Launch Complex 39A on 15 May 2017 from NASA’s Kennedy Space Center in Florida. Credit: Ken Kremer/Kenkremer.com

The Inmarsat-5 F4 (I-5 F4) will become part of the firms Global Xpress network “which has been delivering seamless, high-speed broadband connectivity across the world since December 2015,” says Inmarsat.

“Once in geostationary orbit, the satellite will provide additional capacity for Global Xpress users on land, at sea and in the air.”

I-5 F4 was built by Boeing at their satellite operations facility in El Segundo, CA for Inmarsat.

The new satellite will join 3 others already in orbit.

Inmarsat 5 F4 counts as the sixth SpaceX launch of 2017.

SpaceX Falcon 9 rocket carrying Inmarsat 5 F4 broadband satellite stands raised erect poised for twilight liftoff from Launch Complex 39A on 15 May 2017 from NASA’s Kennedy Space Center in Florida. Credit: Ken Kremer/Kenkremer.com

Watch for Ken’s continuing onsite launch reports direct from the Kennedy Space Center and Cape Canaveral Air Force Station in Florida.

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

Inmarsat-5 Flight 4 (I-5 F4) satellite undergoes prelaunch processing for liftoff on SpaceX Falcon 9. Credit: Inmarsat

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Dr. Ken Kremer is a speaker, research scientist, freelance science journalist (Princeton, NJ) and photographer whose articles, space exploration images and Mars mosaics have appeared in magazines, books, websites and calendars including Astronomy Picture of the Day, NBC, FOX, BBC, SPACE.com, Spaceflight Now, Science and the covers of Aviation Week & Space Technology, Spaceflight and the Explorers Club magazines. Ken has presented at numerous educational institutions, civic & religious organizations, museums and astronomy clubs. Ken has reported first hand from the Kennedy Space Center, Cape Canaveral, NASA Wallops, NASA Michoud/Stennis/Langley and on over 70 launches including 8 shuttle launches. He lectures on both Human and Robotic spaceflight – www.kenkremer.com. Follow Ken on Facebook and Twitter

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