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STV 4, 5


STV (Satellite Test Vehicle) was a series of vehicle evaluation payloads built for the test flights of the Europa-2 rocket.

STV 4 was a mass representative for the Symphonie communications satellites, which were to fly on the third and fourth flights of Europa-2. The 360 kg cylinder shaped satellites were built by Fiat Aviazione for ELDO to register the launch environment of the Europa-2 rocket.

The launch of STV 4 failed, when the inertial guidance system failed 105 seconds after launch, which lead to vehicle break up at 150 seconds.

A second vehicle, STV 5 was to fly on the second Europa-2 rocket, but was cancelled along with the whole Europa project.

Nation: Europe
Type / Application: Vehicle evaluation
Operator: ELDO
Contractors: Fiat Aviazione
Power: Batteries
Mass: 360 kg
Satellite COSPAR Date LS Launch Vehicle Remarks
STV 4 1971-F10 05.11.1971 Ko CECLES F Europa-2
STV 5 - cancelled Ko CECLES Europa-2
Further STV missions:

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