|Ariane 5 G|
|Launch vehicle||Ariane 5 G|
|Launch site||Guiana Space Center, Kourou, French Guiana|
|Description||Second stage partial failure|
|Desired orbit||Geostationary transfer orbit|
Such a torque is not unusual; but before the test flight it had been estimated at less than 300 Nm. The attitude control system of the main stage would have been able to compensate for that. It couldn't cope with the threefold value that actually occurred, which caused the main engine to shut down some 10 or 20 seconds too soon.
Among several solutions to counter the roll torque it was decided to install a second attitude control system on the Ariane 5 launcher. The new unit, installed on the lower part of the vehicle equipment bay, is able to counteract a roll torque up to 2000 Nm.