Payload dynamic behaviour study on the Ariane launcher
Abstract
The dynamic behavior of the liquid-propellant launch vehicle Ariane and accompanying payloads is investigated. Decoupled longitudinal and lateral models, relying on a Rayleigh-Ritz model and a Timoshenko beams and matrices model respectively, are employed to simulate the behavior of the launch vehicle; a coupled analysis capable of treating a wide range of payloads is then formulated. In particular, the direct matrix assembly method is applied to simple payloads, while modal synthesis techniques are applied to more complex cases. Computer programs are used to study three severe flight events (maximum dynamic pressure, main engine cut-off and second engine cut-off) and to consider problems associated with a rigid payload of 1600 kg or a flexible payload for a qualification launch.
- Publication:
-
Prague International Astronautical Federation Congress
- Pub Date:
- September 1977
- Bibcode:
- 1977prag.iafcU....G
- Keywords:
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- Ariane Launch Vehicle;
- Computer Techniques;
- Dynamic Structural Analysis;
- Payloads;
- Data Processing;
- Dynamic Loads;
- Frequency Response;
- Modal Response;
- Nastran;
- Rayleigh-Ritz Method;
- Technology Assessment;
- Timoshenko Beams;
- Transient Response;
- Launch Vehicles and Space Vehicles