I’m Anthony Colangelo.

And here’s the megafeed of everything I’ve been doing.

Astra Launched, Learned Something

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Speaking of early shutdowns, Astra launched just about two weeks ago, but the results are unclear—the FAA stated there was a mishap, and Alaska Aerospace told SpaceNews that “the customer is very pleased with the outcome of the launch.”

Boeing’s Sticky Situation

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There’s still some murkiness here. Was the 1.5-second firing the full duration that they were aiming for with this test, or did it shut down early? I’ve heard the latter.

The FCC Might Let 5G (Use Some C-Band)

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“The unanimous vote by Federal Communications Commission Chairman Ajit Pai and the agency’s three commissioners lays the groundwork for the transition of some, or possibly all of the 500 megahertz of spectrum commonly known as C-band.”

New Glenn Dual Manifesting

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Blue seems to be trying really hard to limit the downsides of dual manifesting, and a single price for a ride to orbit no matter how you fly or when is a huge departure from the norm. It really only makes sense two ways: the entry price for a ride on New Glenn is shockingly low, or Blue will have no shortage of their own payloads to fly. Or both.

Cygnus Successfully Tests Station Reboost

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“The Cygnus spacecraft’s BT-4 main engine, supplied by IHI Aerospace of Japan, fired for 50 seconds Tuesday. The engine produces around 100 pounds of thrust, and the maneuver raised the orbit of the roughly 450-ton space station by 295 feet (90 meters).”

AR-22 Fires 10 Times in 240 Hours

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The total firing duration was about two Shuttle flights to orbit, so total duration isn’t the surprising thing here—it’s the fact that they could turn the engine around quick enough to pull this off. We’ll see where this goes from here, but I don’t have high hopes.

ISRO Carries Out Pad Abort Test

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Though ISRO doesn’t have an official human spaceflight program just yet, they’re making good progress on fundamental components, including the abort systems and the launch vehicle—GSLV Mk. III. Looks like this was a successful test of the abort system, save for the crew module separating from the parachutes on final descent.

Thanks to June Patrons

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Very special thanks to the 206 of you out there supporting Main Engine Cut Off on Patreon for the month of June. Your support keeps this blog and podcast going, and most importantly, it keeps it independent.