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Simulation of an «Angara» family carrier rocket liftoff

This work was carried out in cooperation with the "Khrunichev" design office

«Angara» family carrier rockets

Angara-1 Angara-2 Angara-3 Angara-5

The peculiarity of the liftoff of a carrier rocket from "Angara" family is the interaction process between the rocket and the launching system mechanism. The mechanism holds the rocket during the first stage of the launch and then takes the arm with rocket-born releasable connections away from the rocket. The interaction develops during the joint motion of the rocket and the launching system mechanism. As a result a rather complicated spatial pattern of dynamic interaction in the launching system column - holding mechanism - launching system - carrier rocket - control system - environment system takes shape.

Launching system mechanism

The following factors were taken into account during the simulation:

elastic properties of the carrier rocket;

elastic properties of the launching system column;

behaviour of the holding mechanism;

behaviour of the carrier rocket control system;

transient wind load on the carrier rocket and on the launching system column.

Performing simulation with EULER

The research objective was the dynamical analysis of the start of an Angara-5 carrier rocket when one of the engines fails to operate. The results of the simulation were used for correcting the control system algorithms to ensure the gap between the launching column and the rocket during the liftoff.