Mechanical supporting ring structure
- 544 Downloads
Large deployable antenna reflectors are commonly employed for space missions. Scientific, telecommunications and earth observation applications are enabled due to the antenna gain provided by the large apertures (8–25 m). The most relevant requirements that drive the design are the size of the stowed package diameter (0.4–1.50 m), the mass (18–160 kg), the control of the deployment process, the accuracy and stability of the surface and the RF performance requirements. In this paper a new architecture of conical ring reflector is described, with the objective of providing a response to the mentioned requirements. The projected aperture range of 8–25 m is addressed, enabling to create offset reflectors of elliptical rim. The configuration is based on a double pantograph conical ring. It is an architecture suitable for reflector-based radar in LEO missions from P to C band, although the expected stiffness and stability can be seen as an asset for higher operational frequencies. The configuration of the structure is new and has been preliminarily discussed in the paper. Further investigations might well be of interest.
KeywordsLoad-bearing ring Pantographs Stiffness Ring deployment mechanism (RDM)
All the concepts shown in the paper are covered by ESA/PAT/596 and have been developed under the ESA contract TALDES with Technical University of Munich as prime contractor and the Georgian Technical University participation in the design and development of these concepts.
- 1.Kravchenko J.: Large-size deployable space reflector, Patent RU2214659, H01Q 15/16 (2003) http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=RU&NR=2214659C2&KC=C2&FT=D&ND=6&date=20031020&DB=EPODOC&locale=en_gb
- 2.Medzmariashvili E.: Deployable space reflector antenna, WO03003517, H01Q 15/16 (2002) http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=WO&NR=03003517A1&KC=A1&FT=D&ND=4&date=20030109&DB=EPODOC&locale=en_gb
- 3.Tserodze Sh et al.: Unfoldable Reflector, GE 602, H01Q 15/20 (1997) http://www.sakpatenti.org.ge/DB/fulltexts/inventions/602.pdf
- 4.Medzmariashvili E.: Deployable space reflector, Patent GE 5298, H01Q 15/20, Institute of constructions special systems and engineering maintenance of Georgian Technical University (2011) http://www.sakpatenti.org.ge/DB/fulltexts/inventions/5298.pdf
- 5.van‘t Klooster C.G.M., Medzmariashvili E., Tserodze Sh., Datashvili L., Tsignadze.N.: Large deployable reflector configuration for space based applications in telecommunications, science and remote sensing. In: Proceedings of International Scientific Conference “advanced lightweight structures and reflector antennas”, 14–16 October pp. 75–82. Tbilisi, Georgian Technical University, Georgia (2009)Google Scholar
- 6.Ozawa S, Shintate K., Tsujihata A.: tri-fold deployable reflector for communication satellites, In: AIAA 29th International Communications Satellite Systems Conference (ICSSC-2011), AIAA 2011–8082Google Scholar