ULA Vulcan Rocket Return to Flight November 14 Explained: 40 Amazon Leo Satellites After 9-Month Grounding

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UPDATE — 14 November 2026, 3:00 PM IST: Friday's launch attempt was scrubbed — ULA announced at 8:41 a.m. EST on 13 November that a power interruption at the Air Liquide gaseous nitrogen plant had cut deliveries to the pad, after liquid-oxygen loading into the Centaur upper stage had begun. The rocket and all 40 Amazon Leo satellites remain healthy. Liftoff is now set for Saturday, 14 November at 12:32:30 p.m. EST (11:02 p.m. IST) from Space Launch Complex 41, in a 29-minute window to 11:31 p.m. IST, with no rain and winds of 10–15 knots expected.

ula vulcan rocket return to flight november 13 explained — Vulcan rocket lifting off from Cape Canaveral

Image: Wikimedia Commons / U.S. Space Force photo by Airman 1st Class Spencer Contreras (public domain) — File photo: Vulcan lifting off on its maiden flight, 8 January 2024. This is not the 13 November 2026 flight, which has not flown yet.

TL;DR: ula vulcan rocket return to flight november 13 explained: United Launch Alliance will fly its Vulcan rocket again on Saturday 14 November 2026, carrying 40 Amazon Leo internet satellites, after a nine-month grounding caused by solid-rocket-booster nozzle failures. Liftoff is set for 12:32:30 p.m. EST (11:02 p.m. IST) in a 29-minute window, with weather 90% favourable; the flight is still pending final range approval, and the rocket has not yet been cleared to carry US military payloads again.

UPDATE — 13 November 2026: Launch day — scrubbed (see the update above). The attempt was called off at 8:41 a.m. EST after a power interruption at the Air Liquide gaseous nitrogen plant; liftoff is now set for Saturday, 14 November at 12:32:30 p.m. EST (11:02 p.m. IST), with a 29-minute window. The launch readiness review cleared the LV-01 mission on 11 November, and the rocket rolled out to the pad on 12 November on ULA's new Amazon-funded launch platform. The 40 satellites — the most on any Leo mission so far — will separate in 21 events starting about 1 hour 17 minutes after liftoff, into a 450 km parking orbit; once deployed, the constellation will have 432 satellites in orbit, against the 578 needed for initial service. A second Vulcan, LV-02, is already being prepared and could fly within weeks of a normal LV-01. ULA's live webcast starts about 20 minutes before liftoff. Sources: NASASpaceFlight (12 Nov 2026), Florida Today (11 Nov 2026), USA Today (12 Nov 2026), The Space Road (12 Nov 2026).

UPDATE — 4 November 2026: Fresh reporting ahead of the 13 November flight sharpens the picture. Florida Today lists the launch window as TBA and notes the date remains subject to approval from the launch range, while independent trackers list a 17:54 UTC slot — the date can still slip. Amazon now has 396 Leo satellites in orbit and has launched none since early July 2026, against a 3,232-satellite first-generation constellation and a July 2029 FCC deadline; CEO Andy Jassy told analysts on 29 October that Leo "remains on track to get initial service this year". The Pentagon wants data from at least two successful commercial flights before Vulcan carries national-security payloads again. The next milestone after this flight is already dated: 23 November 2026, when an Ariane 6 is targeted to carry 36 more Leo satellites from French Guiana. Sources: Florida Today (2 Nov 2026), Smallsat News / SpaceNews (3 Nov 2026), Broadband Breakfast (2–3 Nov 2026).

📌 Key Highlights

  • Return date: Saturday 14 November 2026, 12:32:30 p.m. EST (11:02 p.m. IST) from Space Launch Complex 41 at Cape Canaveral Space Force Station, Florida — 29-minute window, weather 90% favourable, pending final approval from the US Space Force's Eastern Range.
  • The payload: 40 satellites for Amazon's Leo broadband constellation — the most on any Leo mission yet — deployed from the Centaur upper stage in 21 events starting about 1 hour 17 minutes after liftoff.
  • Fifth flight, biggest config yet: Vulcan Leo 1 is Vulcan's fifth flight since its 2024 debut and the first with six GEM 63XL strap-on boosters (VC6L).
  • Why it was grounded: nozzle failures on the Northrop Grumman boosters on two of Vulcan's first four flights — Cert-2 in October 2024 and USSF-87 on 12 February 2026.
  • What changed: an improved nozzle design, plus process changes, after a joint ULA–Northrop Grumman–Space Force investigation; testing continues in parallel with the mission.

ULA Vulcan rocket return to flight November 13 explained: what happened?

On 28 October 2026, United Launch Alliance (ULA) announced the date its Vulcan rocket will fly again: Saturday 14 November 2026. The mission, called Vulcan Leo 1, will carry 40 satellites for Amazon's Leo internet service — the broadband constellation built to compete with SpaceX's Starlink — from Cape Canaveral Space Force Station in Florida. It will be the first Vulcan flight since February 2026, ending a grounding of roughly nine months.

Since the announcement the countdown has firmed up: the launch readiness review cleared the mission — now designated LV-01, for Leo Vulcan 1 — on 11 November, and the rocket rolled out to Space Launch Complex 41 on 12 November on ULA's new Amazon-funded launch platform. ULA will webcast the launch live from about 20 minutes before liftoff.

The rocket has already been assembled for the job. Stacking began on 14 May 2026, when the first-stage booster was hoisted onto its launch platform inside ULA's new Vertical Integration Facility-A — the "A" stands for Amazon. The first LEO-optimised Centaur upper stage followed four days later, the integrated stack rolled to the pad for fuelling tests in August, and its six solid rocket boosters have since been installed. The payload fairing holding the 40 satellites left Amazon's processing facility near the former shuttle landing strip on 21 October for attachment to the rocket.

Amazon has booked 38 Vulcan launches in total to build out the Leo constellation, and Spaceflight Now reports nearly 400 Leo satellites are already in orbit from earlier launches on Atlas V, Ariane 6 and Falcon 9 rockets. Amazon says a second Vulcan vehicle, for the Leo 2 mission, is already assembled. Vulcan matters to Amazon because it can launch more Leo satellites at once than any rocket other than Blue Origin's New Glenn — whose first Leo-carrying rocket was lost in a pad explosion during testing in May 2026, although the satellites were not attached at the time.

Why was Vulcan grounded for nine months?

The grounding traces to one part: the nozzle on the GEM 63XL solid rocket booster, built by Northrop Grumman. Vulcan can fly with zero, two, four or six of these strap-on motors depending on how much thrust a mission needs, and the nozzle has now failed in flight twice.

The first failure came on Vulcan's second flight, the Cert-2 certification mission in October 2024, when the nozzle on one of two boosters disintegrated. ULA believed the problem was fixed, and the Space Force certified Vulcan for national security missions in March 2025. The second failure came less than 30 seconds into the USSF-87 mission on 12 February 2026, when a nozzle on one of four boosters failed. In both cases the rocket still reached its intended orbit: the methane-fuelled first stage (two Blue Origin BE-4 engines) and the hydrogen-fuelled Centaur upper stage compensated for the reduced, asymmetric thrust. But the Space Force halted further Vulcan flights while the problem was investigated.

The joint ULA, Northrop Grumman and Space Force team says it has "made great strides" in understanding the February anomaly and has "identified several potential contributors which have been mitigated through design and process improvements to the nozzle". ULA's statement adds that the November flight "will utilize the improved nozzle design, and additional testing and analysis will continue in parallel with the mission" — in other words, the fix flies before the test programme is fully finished, so the flight itself becomes part of validating it. Northrop Grumman test-fired a 63XL motor earlier in 2026 as part of the effort. ULA has not published detailed findings, so the precise root cause of the February failure is not public.

FlightDateWhat happened
Cert-1 (maiden flight)8 January 2024Vulcan's debut, carrying Astrobotic's Peregrine lunar lander; rocket performed without problems.
Cert-2October 2024Nozzle on one of two GEM 63XL boosters disintegrated; mission still reached its planned orbit.
USSF-106August 2025First national security mission; flew cleanly to geosynchronous orbit.
USSF-8712 February 2026Nozzle failure on one of four boosters under 30 seconds after liftoff; payload still reached orbit; fleet grounded afterwards.
Vulcan Leo 1 (LV-01)14 November 2026Return to flight: 40 Amazon Leo satellites, first VC6L flight with six boosters, liftoff set for 12:32:30 p.m. EST (11:02 p.m. IST), 29-minute window, 90% weather go; pending final range approval.

ula vulcan rocket return to flight november 13 explained — Vulcan rocket on the launch pad before its first flight

Image: Wikimedia Commons / NASA/Ben Smegelsky (public domain) — File photo: Vulcan vertical at Space Launch Complex 41 after rollout on 5 January 2024, carrying the Peregrine lander. The November 2026 rocket is a different vehicle in the six-booster VC6L configuration.

Why it matters for USA readers — and what it means for India

For the United States, this is about having a second heavy-lift option besides SpaceX. Vulcan was built to replace ULA's Atlas V and Delta IV and to serve national security launches, but the nine-month grounding cost it work: during the stand-down the Space Force reassigned six national security launches to SpaceX rockets, as disclosed at an industry briefing on 21 October 2026, and it has not yet said when Vulcan will carry military payloads again. A clean 13 November flight is the first step back; a failure would deepen the programme's problems and leave the Pentagon dependent on a single provider for longer.

For India, the stakes are indirect but real. Amazon's Leo constellation is a direct rival to Starlink in the satellite-broadband race, and the pace at which either network is built decides how soon affordable satellite internet reaches remote Indian regions — the same market Indian players are watching closely. Every Vulcan delay has slowed Leo's build-out, and every successful Vulcan flight speeds it up. India also has its own busy space week: see our ISRO NVS-03 launch October 30 2026 explainer. And for how launch cadence reshapes the whole industry, read our SpaceX 10,000 launches a year explainer and our Virgin Galactic Delta spaceship explainer.

Should you care?

✅ Yes, if you follow rockets or satellite internet: a flagship rocket returning after nine months, carrying the first Vulcan load of Amazon's Starlink rival, is one of the year's biggest space stories. ⏳ But treat 13 November as a target, not a promise: final range approval is still pending, and ULA itself says nozzle testing continues in parallel with the mission. The flight to celebrate is a clean liftoff with all six boosters performing — until then, this is a comeback attempt, not a comeback.

What to watch before liftoff

Three things are now settled that were open when this post was first published: a launch time and window ( 12:32:30 p.m. EST, 29 minutes), a cleared launch readiness review (11 November) and a rocket on the pad (12 November). What still has to go right: final Eastern Range approval, the weather holding at 90% favourable, and all six boosters performing cleanly through ascent — the nozzle fix is flying before its test programme is finished, so the flight itself is part of the validation. Watch, too, for any word from the Space Force on whether military payloads return to Vulcan after this flight. If the launch slips, this post will be updated with the new date rather than replaced — the story is the return to flight, whenever it happens.

FAQs

When is Vulcan's return to flight? ULA is targeting Saturday 14 November 2026 for the Vulcan Leo 1 (LV-01) mission from Cape Canaveral Space Force Station, Florida, with liftoff set for 12:32:30 p.m. EST (11:02 p.m. IST) in a 29-minute window. The flight is still pending final range approval, and the weather forecast is 90% favourable.

Why was the Vulcan rocket grounded? Vulcan was grounded after a solid rocket booster nozzle failure on the USSF-87 mission on 12 February 2026 — the second such failure after Cert-2 in October 2024. Both missions still reached orbit, but the Space Force paused Vulcan flights while a joint ULA–Northrop Grumman–Space Force team investigated.

What is the Vulcan Leo 1 mission? Vulcan Leo 1 is Vulcan's fifth flight and its first in the six-booster VC6L configuration. It will carry 40 satellites for Amazon's Leo broadband constellation to low Earth orbit, deploying them from the Centaur upper stage in 21 events starting about 1 hour 17 minutes after liftoff.

How many Amazon Leo satellites are in orbit? As of early November, 368 Leo satellites are in their operational orbit, according to NASASpaceFlight. Once LV-01's 40 satellites are deployed, the constellation will have 432 satellites in orbit. Amazon has booked 38 Vulcan launches to continue building the constellation toward the 578 satellites needed for initial service, out of a first-generation network of up to 3,236.

Will Vulcan fly US military missions again? Not yet confirmed. The Space Force reassigned six national security launches to SpaceX during the grounding and has not announced when Vulcan will be cleared for military payloads again. Spaceflight Now has asked the Space Force what work remains before that clearance.

Takeaway: Vulcan has a date, a time, a payload and a redesigned nozzle — liftoff is set for 12:32:30 p.m. EST (11:02 p.m. IST) on 14 November, with a 29-minute window and 90% favourable weather. What is still missing is final range approval and a clean flight; 14 November will show whether nine months of fixes were enough.

ULA's live webcast starts about 20 minutes before liftoff — the clearest way to see whether all six boosters perform on the comeback flight.

Sources

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