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Vega-C’s 2026 VV30 flight used a Vespa adapter for two satellite releases

Sentinel-3C rode above FLEX; the spacecraft separated in sequence, about an hour apart, into different orbits.

By GreenSpacealien Editorial1 min read
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A Vega-C AVUM+ upper-stage module is mounted in a vibration-test facility, with test equipment and cables attached.
Vega‑C’s AVUM+ upper stage at ESA’s ESTEC Test Centre during vibration testing in November 2018.ESA–G. Porter · Vega-C upper stage shaker testLicense terms · CC BY-SA 3.0 IGO. Resized and converted for web.View full image

One fairing, two deployments

Vega-C flight VV30 lifted off from Europe’s Spaceport in French Guiana at 22:21 local time on 14 September 2026. It carried ESA’s FLEX and Copernicus Sentinel-3C together, marking the first dual launch for Vega-C.[2]

Vega-C climbs with three solid-propellant stages; a liquid-propellant fourth stage then places the satellites precisely. For VV30, the spacecraft were stacked inside the fairing using Vespa, a secondary payload adapter. Sentinel-3C sat on top, with FLEX enclosed below. After Sentinel-3C separated, Vespa opened to reveal FLEX for its own release. The adapter is payload hardware, not one of Vega-C’s propulsion stages.[2]

Release order and first contact

This was a sequenced separation, not one combined release. ESA reports Sentinel-3C was injected first, then FLEX about an hour later; the flight demonstrated that Vega-C could place the two missions into different required orbits. Once each satellite separated, ESA’s European Space Operations Centre received an initial signal from it, confirming safe release and contact with ground control. The arrangement joined one launch with two distinct deployment steps. This describes VV30’s demonstration, not every dual-launch profile.[1]

ESA planned several days of launch-and-early-orbit health checks after first contact. Satellite and instrument commissioning would prepare the missions for operations; the launch report did not declare that work complete.[1]

Sources & further reading

  1. FLEX and Sentinel-3C launchedEuropean Space AgencyPublished September 15, 2026Accessed November 3, 2026

    Confirms the release order and interval, different required orbits, first signals and planned launch-and-early-orbit health checks.

  2. Vega-C VV30European Space AgencyPublished September 15, 2026Accessed November 3, 2026

    Describes Vega-C’s three solid stages and liquid fourth stage, first dual launch, Vespa stack and release sequence.

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