Arianespace launches 36 OneWeb internet satellites on Soyuz rocket
A Soyuz rocket blasted off from Russia today (May 28), carrying a new clutch of OneWeb internet satellites into orbit.
The mission, called ST32, is a joint mission between Arianespace and its partner Starsem. At 1:38 p.m. EDT (1738 GMT, or 2:38 a.m. local time on Saturday, May 29), a Soyuz rocket blasted off from the Vostochny Cosmodrome in eastern Russia.
Onboard the rocket was a stack of 36 OneWeb satellites, bringing the total number launched up to 218. With this flight, OneWeb becomes the second largest satellite fleet currently in orbit, behind SpaceX’s Starlink.
An Arianespace Soyuz rocket launches 36 OneWeb internet satellites on the Launch 7 mission from Vostochny Cosmodrome in Russia on May 28, 2021. (Image credit: Arianespace/Roscosmos)
After liftoff, it will take roughly 3 hours and 51 minutes for the rocket to deploy its payload into a near-polar orbit.
From their orbital perch, 280 miles (450 kilometers) above the Earth, the satellites will provide internet coverage to traditionally underserved areas north of the 50th parallel, including customers in the U.K., northern Europe, Greenland, Iceland, the Arctic seas and Canada.
That service is expected to start in June, with eventual global coverage following in 2022.
Friday’s flight marks the seventh flight overall and the fourth since OneWeb filed for bankruptcy in March 2020. After filing for Chapter 11, the company was acquired by the British government and the Indian telecom, Bhakti Global.
It’s also part of an effort to expand the constellation enough to begin service this year. As part of a “Five to 50” campaign, this flight will help inch the constellation closer to 80% capacity, which the company has said will allow it to kick off service this summer.
A stack of 36 OneWeb internet satellites are seen in launch configuration ahead for OneWeb’s Launch 7 mission liftoff off set for May 27, 2021. (Image credit: Arianespace)
OneWeb is not the only company that hopes to connect the world — SpaceX, TelStar and Amazon all have the same aspirations, although SpaceX is the only other company currently to have hardware in orbit.
To date more than 1,700 of SpaceX’s Starlink satellites have launched, with thousands more planned. OneWeb’s initial quota is set to be 650 satellites strong, a stark comparison to SpaceX’s massive fleet.
Friday’s launch blasted off right on time, following a 24-hour delay due to an issue with the rocket’s electrical system. Ground crews replaced one of the components and the flight subsequently went off without a hitch.
The flight marked the 3rd of the year from Russia’s Vostochny Cosmodrome and the 8th Soyuz launch so far in 2021. The launcher is fueled by rocket-grade kerosene and liquid oxygen.
The 36 OneWeb satellites, which were built in Florida, rocketed to orbit atop a 170 foot-tall (52-meter) Soyuz 1.b rocket. It’s four strap-on boosters provided an extra punch at liftoff and then separated two minutes after liftoff.
The rocket’s core stage then burned for an additional three minutes before falling back to Earth. A Fregat upper stage completed a series of four burns before depositing the satellites into their orbit.
The OneWeb satellites will deploy in groups of four before unfurling their solar panels and using their xenon-fueled ion propulsion systems to reach the planned operating orbit at an altitude of 745 miles (1,200 kilometers).
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