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Category: satellites – Page 79

COLORADO SPRINGS — A shortage of Ukrainian Antonov aircraft raises the prospect of more delays for satellite projects already bogged down by supply chain issues.

Satellite manufacturers make heavy use of large cargo space on Antonovs to transport GEO spacecraft from factory to launch site.

But some Antonovs have been destroyed amid Russia’s war in Ukraine, noted Mark Quinn, head of Willis Towers Watson’s satellite insurance business, and those that are in service tend to be owned by Russian air cargo companies subject to Western sanctions or are being used to support the war effort.

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San Francisco-based startup Astranis has purchased a dedicated launch on a SpaceX Falcon 9 rocket, eschewing the less expensive “ride-share” model favored by new space companies for an exclusive mission that Astranis says will put its package of four communications satellites closer to their target orbit in a much faster amount of time.

“We’re actually using substantially less than the max capability of a Falcon 9,” Astranis CEO and founder John Gedmark explained. “This is just four small satellites that [will be] on there. So we’re actually able to use all of that extra performance to put those four satellites much closer to GEO than you would normally be able to do with with this kind of launch.”

How much faster? At least twice as fast, cutting down the time from up to six months to as little as three months. Purchasing a dedicated launch on a Falcon 9 — a first amongst space companies — also means that Astranis will have much more control over when the rocket takes off and the payload insertion orbit.

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Amazon calls it “the largest commercial procurement of launch vehicles in history.” Amazon’s SpaceX-rivaling internet service Project Kuiper has made a major leap towards becoming operational and catching up with SpaceX’s Starlink, which is already populating our skies.

Amazon selects Arianespace, Blue Origin, and ULA as heavy-lift launch partners to deploy the majority of its Project Kuiper satellite constellation.

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COLORADO SPRINGS – Lockheed Martin on April 4 released the technical specifications of a docking adapter that could be used by manufacturers to make satellites interoperable and easier to update on orbit with new technology.

The technical data for the Mission Augmentation Port (MAP) can be used by designers to develop their own docking adapters, said Lockheed Martin.

The company used the MAP standard to design its own docking device, called Augmentation System Port Interface (ASPIN).

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Including one long-awaited and colossal German satellite. It’s never too late to join the party when you’re headed to space.

On Friday, April 1 at 12:24 p.m. ET, Falcon 9 launched Transporter-4, SpaceX’s fourth dedicated smallsat rideshare program mission, from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida. This was the seventh launch and landing of this Falcon 9 stage booster, which previously supported launch of Crew-1, Crew-2, SXM-8, CRS-23, IXPE, and one Starlink mission. Following stage separation, Falcon 9’s first stage landed on the Just Read the Instructions droneship, which was stationed in the Atlantic Ocean.

On board this flight were 40 spacecraft, including CubeSats, microsats, picosats, non-deploying hosted payloads, and an orbital transfer vehicle carrying spacecraft to be deployed at a later time.

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Geomagnetic storms occur when space weather hits and interacts with Earth. Space weather is caused by fluctuations within the sun that blast electrons, protons and other particles into space. I study the hazards space weather poses to space-based assets and how scientists can improve the models and prediction of space weather to protect against these hazards.

When space weather reaches Earth, it triggers many complicated processes that can cause a lot of trouble for anything in orbit. And engineers like me are working to better understand these risks and defend satellites against them.

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UCLA scientists have discovered a new source of super-fast, energetic electrons raining down on Earth, a phenomenon that contributes to the colorful aurora borealis but also poses hazards to satellites, spacecraft and astronauts.

The researchers observed unexpected, rapid “electron precipitation” from low-Earth orbit using the ELFIN mission, a pair of tiny satellites built and operated on the UCLA campus by undergraduate and graduate students guided by a small team of staff mentors.

By combining the ELFIN data with more distant observations from NASA’s THEMIS spacecraft, the scientists determined that the sudden downpour was caused by whistler waves, a type of electromagnetic wave that ripples through plasma in and affects electrons in the Earth’s magnetosphere, causing them to “spill over” into the atmosphere.

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