The space interferometer siderostats

Author

Jau, Bruno M. ; Badescu, Mircea ; Goullioud, Renaud ; Trease, Brian P. ; Chang, Zensheu ; Carson, Johnathan M. ; Braun, David F. ; Cook, Brant T.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA

fYear

2009

fDate

7-14 March 2009

Firstpage

1

Lastpage

11

Abstract

The paper describes the Siderostats (SID) of the Space Interferometry Mission (SIM) that is being developed at JPL. The description focuses on the generic design for the SIDs, having a 336 mm diameter mirror with a double corner cube at the mirror´s vertex. Mirror positioning is controlled by single stage linear actuators (no fine stage). The mirror´s 8deg dual axis tip/tilt rotation is enabled through sets of hexfoil flexures. The entire SID configuration is described, key requirements listed, and results from preliminary analyses mentioned. Design details, positioning and sensing capabilities, as well as results from an actuator life test, are presented.

Keywords

interferometers; mirrors; space vehicles; JPL; SID; SIM; Siderostats; Space Interferometry Mission; double corner cube; dual axis tip-tilt rotation; hexfoil flexures; mirror positioning; mirror vertex; single stage linear actuators; Control systems; Extraterrestrial measurements; Hydraulic actuators; Instruments; Interferometry; Life testing; Mirrors; Optical beams; Space missions; Space technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace conference, 2009 IEEE

Conference_Location

Big Sky, MT

Print_ISBN

978-1-4244-2621-8

Electronic_ISBN

978-1-4244-2622-5

Type

conf

DOI

10.1109/AERO.2009.4839433

Filename

4839433