Effect of Dimensional Stability of Composites on Optical Performances of Space Telescopes
Publication: Journal of Aerospace Engineering
Volume 27, Issue 1
Abstract
To achieve high-resolution images from satellites, the dimensional-stability effect of telescope structure on optical performance should be considered in the operating environment. In this paper, the dimensional stability of composite telescope structure and optical performance degradation resulting from its dimensional instability have been evaluated under operating conditions. Dimensional-stability evaluation of the composite structure was achieved by a combination of precise deformation measurement and finite-element analysis of the composite-structure model. Thermal deformation of composites was measured by interferometer, and a brand-new dilatometer using an optical-scale sensor was developed for outgassing deformation measurement. The thermal/outgassing deformation of the telescope structure was interpreted as despace of the two-mirror Cassegrain telescope, and the optical-performance change resulting from despace was calculated in terms of the module transfer function (MTF) value. The MTF value change and image simulation based on the MTF value were shown for each case: original, thermal-deformed, and outgassing-deformed telescopes.
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Acknowledgments
This research was supported by a National Space Laboratory program through the National Research Foundation of Korea funded by the Ministry of Education, Sciences and Technology (Grant No. 2009-0091934).
References
Abusafieh, A., Federico, D., Connell, S., Cohen, E. J., and Willis, P. B. (2001). “Dimensional stability of CFRP composites for space-based reflectors.” Proc. SPIE, Optomechanical Design and Engineering 2001, A. E. Hatheway, ed., Vol. 4444, 9–16.
Besuner, R. W., Scholl, M. J., Lieber, M. D., and Kaplan, M. L. (2007). “Integrated modeling of point-spread function stability of the SNAP telescope.” Proc. SPIE, UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts III, H. A. MacEwen and J. B. Breckinridge, eds., Vol. 6687, 66870X.
Cordero, J., et al. (2009). “Interferometry based high-precision dilatometry for dimensional characterization of highly stable materials.” Meas. Sci. Technol., 20(9), 095301.
Cota, S. A., et al. (2010). “PICASSO: An end-to-end image simulation tool for space and airborne imaging systems.” J. Appl. Remote Sens., 4(1), 043535.
Eckardt, A., Börner, A., Hilbert, S., and Walter, I. (2006). “High-resolution instruments for air- and spaceborne application.” Proc., DLR Kick-Off Meeting KompSat 3, 〈http://www2.informatik.huberlin.de/cv/documents/Fusion_Workshop_11.2006/02_Eckardt.pdf〉 (Jul. 16, 2011).
Genberg, V., and Michels, G. (2011). “Integrating MD NASTRAN with optical performance analysis.” Proc., 2011 MSC Software Users Conf., MSC Software, Costa Mesa, CA.
Genberg, V. L., Michels, G. J., and Doyle, K. B. (2011). “Integrated modeling of jitter MTF due to random loads.” Proc. SPIE, Optical Modeling and Performance Predictions V, M. A. Kahan, ed., Vol. 8127, 81270H.
Gilmore, J. F. (1995). “State-of-the-art CME measurement.” Proc. SPIE, Optomechanical and Precision Instrument Design, A. E. Hatheway, ed., Vol. 2542, 121–128.
Hopkins, H. H. (1955). “The frequency response of a defocused optical system.” Proc. R. Soc. Lond. A., 231(1184), 91–103.
Johnston, J. D., et al. (2004). “Integrated modeling activities for the James Webb Space Telescope: Structural-thermal-optical analysis.” Proc. SPIE, Optical, Infrared, and Millimeter Space Telescopes, J. C. Mather, ed., Vol. 5487, 600–610.
Kim, H.-I., Yoon, J.-S., Kim, H.-B., and Han, J.-H. (2010). “Measurement of the thermal expansion of space structures using fiber Bragg grating sensors and displacement measuring interferometers.” Meas. Sci. Technol., 21(8), 085704.
Kissil, A., Kwak, E., Ho, T., Dumont, P., Irish, S., and Weng, I. (2005). “Integrated modeling applied to the Terrestrial Planet Finder mission.” Proc. SPIE, Optical Modeling and Performance Predictions II, M. A. Kahan, ed., Vol. 5867, 586710.
Kunzmann, H., Pfeifer, T., and Flugge, J. (1993). “Scale vs. laser interferometers: Performance and comparison of two measuring systems.” CIRP Ann., 42(2), 753–767.
Lee, D. (2005). “Hygrothermal design of high stability telescope structure.” Proc. SPIE, ICO20: Optical Devices and Instruments, J. C. Wyant and X. J. Zhang, eds., Vol. 6024, 602423.
Lee, J.-H., et al. (2011). “Imaging performance analysis of an EO/IR dual band airborne camera.” J. Opt. Soc. Korea., 15(2), 174–181.
O’Neill, E. L. (1956). “Transfer function for an annular aperture.” JOSA, 46(4), 285–288.
Poenninger, A., and Defoort, B. (2003). “Determination of the coefficient of moisture expansion.” Proc., 9th Int. Symp. on Materials in a Space Environment, ESA, Noordwijk, Netherlands, 567–572.
Samah Aerial Survey. (2013). “Skyview, local area in Dae-Jeon & Kimpo.” 〈http://maps.daum.net〉 (Feb. 12. 2012).
Wetherell, W. B., and Rimmer, M. P. (1972). “General analysis of Aplanatic Cassegrain, Gregorian, and Schwarzschild telescopes.” Appl. Opt., 11(12), 2817–2832.
Willis, P. B., Dyer, J., and Dummer, S. (1999). “Fabrication and thermo-optical properties of the MLS composite primary reflector.” Proc. SPIE, Optomechanical Engineering and Vibration Control, C. G. Gordon et al., eds., Vol. 3786, 200–205.
Wolff, E. G. (2004). Introduction to the dimensional stability of composite materials, DEStech Publications, Lancaster, PA.
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© 2014 American Society of Civil Engineers.
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Received: Sep 9, 2011
Accepted: Apr 2, 2012
Published online: Apr 10, 2012
Published in print: Jan 1, 2014
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