Between Storms, SpaceX Launches GPS III-7 Aboard Falcon 9

It was a typical summer’s day here on the Space Coast: at first, sunny and warm, humid with an ever-present threat of a thunderstorm lingering off in the distance.

An hour and a half before today’s launch, while the countdown clock was ticking towards T-0, the skies made good on their threat of a thunderstorm, with plenty of lightning strikes and heavy showers near Space Launch Complex 40, where the GPS III-7 satellite, also known as SV-08, waited atop Falcon 9 for liftoff just before the end of the launch window at 1:38 PM Eastern Time.

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Liftoff of Mercury-Redstone 3, with Alan Shepard aboard, May 5, 1961. Photo: NASA
Liftoff of Mercury-Redstone 3, with Alan Shepard aboard, May 5, 1961. Photo: NASA

Note: article was originally published by the author at Talk of Titusville.

Sixty-four years ago, the United States launched its first human being aboard a rocket. It was a tense time politically, and space flight was the new political football of the Cold War. The country’s pride had been injured by the Soviet Union’s accomplishing space feats before the US, but that day — May 5, 1961 — it was a day that restored pride and confidence in America’s capabilities as a nation. And it all happened here, of course, on the Space Coast.

Given that newspapers were leading source of coverage at that time, here’s a look at how one local writer covered the story.

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Summer is nearly back on the Space Coast, with warm temperatures and a persistent threat of rain in the afternoon and evenings — typical weather here, and it will stay this way for several months. That being said, Atlas V was able to beat the weather last night and launched at the opening of its window, with liftoff at 7:01 PM ET after an apparently quiet countdown, save for some concerns about the energy potential of a nearby anvil cloud (Cumulonimbus incus) lingering near the launch pad before dissipating.

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Summer thunderstorms have yet to arrive on the Space Coast this year, but there were rumbles and roars a-plenty yesterday on the Eastern Range. First, in the wee hours, SpaceX launched CRS-32 from KSC, and its booster landed at Landing Zone 1 at Cape Canaveral Space Force Station. Then, after sunset, the company completed another RTLS Falcon 9 launch, this time from Space Launch Complex 40 at Cape Canaveral Space Force Station. Liftoff was at 8:48 PM ET.

Eight minutes and seven seconds after liftoff, Booster B1090 completed its third flight successfully at Landing Zone 2 on the site of the former Launch Complex 13.

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In the 1960’s digital computers were undergoing a radical change: a switch to integrated circuits and the central processing units (CPUs) that we all know and use today. The Saturn V was no different.

The Saturn V Instrument Unit (IU) served as the rocket’s central guidance and control system, housing the Launch Vehicle Digital Computer (LVDC) developed by IBM. The LVDC utilized magnetic core memory, a non-volatile storage technology composed of tiny magnetized rings that retained data without power. Each core memory module stored 4,096 words, with each word comprising 26 data bits and 2 parity bits, totaling 28 bits per word. These modules were integral to the LVDC’s operation, enabling reliable data storage and retrieval during the mission.

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