Vega VV17 launch failure
(17 November 2020 - Arianespace) 8 minutes after liftoff of Vega mission VV17, following the first ignition of the engine of the Avum upper stage, a deviation of trajectory was identified, entailing the loss of the mission.
The Vega launch vehicle was carrying two payloads, SEOSAT-Ingenio, an earth-science observation satellite for the European Spatial Agency (ESA) and TARANIS for France’s National Centre for Space Studies (CNES).
Two and a half months after Vega’s successful return to flight, the Vega launch vehicle lifted off as scheduled on November 16 at 22:52 (local time in Kourou, French Guyana) from the Guyana Space Center. The first three stages functioned nominally until the ignition of the AVUM upper stage, eight minutes after departure from the launch pad. At that time, a degraded trajectory was detected, followed by a loss of control of the vehicle and the subsequent loss of the mission.
The launcher fell in a completely uninhabited area close to the drop zone planned for the Zefiro 9 stage.
Initial investigations, conducted overnight with the available data, a problem related to the integration of the fourth-stage AVUM nozzle activation system is the most likely cause of the loss of control of the launcher.
In accordance with their standard protocols, Arianespace and the European Space Agency (ESA) will set up an independent Inquiry Commission jointly chaired by Daniel Neuenschwander, Director of Space Transport at ESA, and Stéphane Israël, Arianespace Chief Executive Officer, on November 18.
The Commission will provide detailed evidence to explain why steps were not taken to identify and correct the integration error. The Commission will formulate a road map for the Vega’s return to flight under conditions of complete reliability. Arianespace and ESA will jointly present the findings of this commission.
Arianespace uses space to make life better on Earth by providing launch services for all types of satellites into all orbits. It has orbited more than 700 satellites since 1980, using its family of three launchers, Ariane, Soyuz and Vega, from launch sites in French Guiana (South America) and Baikonur, Kazakhstan. Arianespace is headquartered in Evry, near Paris, and has a technical facility at the Guiana Space Center, Europe’s Spaceport in French Guiana, plus local offices in Washington, D.C., Tokyo and Singapore. Arianespace is a subsidiary of ArianeGroup, which holds 74% of its share capital, with the balance held by 15 other shareholders from the European launcher industry.