SpaceX aims for 3 rocket launches, 1 Dragon landing in 22 hours

Richard Tribou, Orlando Sentinel on Dec 17, 2024

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In a span of about 22 hours, SpaceX could manage three rocket launches and one landing of a Dragon spacecraft.

It flew a Department of Defense mission from Florida's Cape Canaveral on Monday night and on Tuesday knocked out a National Reconnaissance Office mission from California and the landing of the latest cargo Dragon spacecraft off the coast of Florida.

The topper will be a launch from Kennedy Space Center that would mark 90 spaceflight missions among all providers on the Space Coast in 2024.

That launch would see a Falcon 9 on the mPower-E mission launching from Kennedy Space Center's Launch Pad 39-A targeting an updated 5:26 p.m. EST liftoff at the end of a one-hour, 27-minute window that opened at 3:59 p.m. with backup during the same window on Wednesday. The payload is a pair of satellites for Luxembourg-based communications company SES headed to medium-Earth orbit.

With one hour before the opening of the window, the countdown was paused for weather, with the T-0 getting first pushed to 4:30, then 5 p.m. and finally the last minute of the available window at 5:26 p.m.

Space Launch Delta 45’s weather squadron forecasts a 55% chance for good launch conditions, that would improve to 65% in the event of a 24-hour delay. High winds at the launch site and concerns for booster recovery delayed launch attempts for both Space Coast missions over the weekend.

When it does fly, this would be the first launch of the first-stage booster that will aim for a recovery landing downrange on the droneship Just Read the Instructions in the Atlantic.

Already on Tuesday, a SpaceX cargo Dragon spacecraft made a successful splashdown off the coast of Florida to complete the CRS-31 mission. The Dragon arrived to the International Space Station with 6,000 pounds of resupply payloads back on Nov. 5 after launching from the Space Coast, and returned with thousands of pounds of supplies and science experiments.

Earlier Tuesday, the company flew the NROL-149, a National Space Security Launch mission, from California’s Vandenberg Space Force Base.

The busy schedule began Monday night, with what had been a secretive mission leading up to launch.

That one was a Falcon 9 that lifted off on the RRT-1 mission from Cape Canaveral Space Force Station’s Space Launch Complex 40 at 7:52 p.m. This was the fourth launch of the first-stage booster, which made a recovery landing on the droneship A Shortfall of Gravitas.

After launch, the Space Force revealed in a press release the RRT stood for “Rapid Response Trailblazer,” and its payload was a GPS III satellite flying under a National Security Space Launch contract that had switched from United Launch Alliance to SpaceX.

It touted the launch as “a new level of readiness and resilience” for its Space Systems Command and Space Operations Command, as it took less than five months to turn around the mission from its inception to launch. Normally this sort of NSSL mission would take 24 months to execute. The prelaunch processing timeline was also sped up from a normal six-month turnaround to only three months.

It took an existing satellite manufactured by Lockheed Martin from storage, sped up its integration and readiness for launch. The mission was originally tapped to fly on a ULA Vulcan rocket, but had been delayed because Vulcan has yet to be certified by the Space Force.

“This launch was a remarkable achievement that highlights the Space Force’s ability to execute high priority launches of major space systems on a significantly reduced timescale,” said Col. Jim Horne, senior materiel leader of Launch Execution for the Space Force’s Assured Access to Space program. “As an added benefit, it also demonstrates flexibility to adjust our manifest to minimize the impact of Vulcan delays.”

The GPS satellite, which was nicknamed “Sally Ride,” joins 31 others already active in orbit, along with seven backup satellites and three more awaiting launch.

“Over 6 billion people use GPS on a daily basis, and we are always eager to update the global capability we provide by getting some new technology on orbit,” said Col. Andrew Menschner, Space Force Delta 31 mission commander, which acted as the space vehicle lead for the first time.