Analysis and Improved Design of Structural Dynamics for the Advanced Upper Stage
- Paper number
IAC-09.C2.1.7
- Author
Mr. Weifeng Hu, China Academy of Launch Vehicle Technology, China
- Coauthor
Mr. Lin Shen, China Academy of Launch Vehicle Technology, China
- Coauthor
Mr. Wule He, China Academy of Launch Vehicle Technology, China
- Coauthor
Prof. Yang Jianmin, China
- Year
2009
- Abstract
The weight and dimension is large for the advanced upper stage and its payload, so it has lower natural frequencies .The upper stage separation、the shock and dissymmetry of multi-satellite sepration、the propellant Sloshing、the thrust ripple of engineer、the startup of servo system、two-way swing of the engines result in the serious vibrational environment .So the dynamic research of the upper stage is very crucial .In this paper ,the dynamic and statics behavior is predicted on ANSYS soft system .According to the mode localization and local unreasonable structure，optimize the design of part structure and layout，and make the rigidity of the upper stage more reasonable .The longitudinal and transverse first-order natural frequencies and displacement of the advanced upper stage satisfied integrated requirements. Finally，the dynamic characteristics comparison of the advanced upper stage before and after improvement is show.
- Abstract document
- Manuscript document
IAC-09.C2.1.7.pdf (🔒 authorized access only).
To get the manuscript, please contact IAF Secretariat.