This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Thermoelastic Measurements on Reflectors for Telecommunication Satellites
Technical Paper
1999-01-2132
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The standard method of the application of videogrammetry during space simulation tests will be summarized. Some improvements, test setups and solved problems will be described. For a videogrammetry measurement a number of pictures are needed. The different views of the test article can be achieved by several methods Test setups with a rotating reflector or a camera on a rotating arm will be presented. If the distortion of the front and the rear side has to be measured simultaneously, two cameras one with view from the top side and an other with view from the bottom side was used. The tilt of the mounting interface with respect to the shell can be measured by means of an additional sophisticated structure attached to the rear interface.
Special precaution has to be taken to reach the extreme temperatures in a reasonable time and with modest effort. A number of tests were performed. The distortion of reflectors with a diameter from 500 mm to 3500 mm and antenna towers was measured and an accuracy of better than 10μm per one meter in diameter was achieved.
Authors
Citation
Frey, H., "Thermoelastic Measurements on Reflectors for Telecommunication Satellites," SAE Technical Paper 1999-01-2132, 1999, https://doi.org/10.4271/1999-01-2132.Also In
References
- Bouman, van Oel, Müller-Stute, Sarti, Dold, 1995 A Photogrammetric System for Use in Thermal Vacuum Testing ESA bulletin, no. 81 February 1995 69 76
- Brown, Dold, 1995 V-STARS - a System for digital industrial Photogrammetry Optical 3D Measurement Techniques III, Vienna 1995 Hrsg. Gruen and Kahmen, Wichmann Verlag Karlstuhe 12 21
- Cohen, Johanning, 1995 Video photogrammetry in Antenna manufacturing Antenna Manufacturing Techniques Association Symposium Williamsburg, Virginia
- Faser C.S. 1992 Refraction considerations for photogrammetric measurements in a thermal vacuum chamber Photogrammetric Record 14 79 99 112 April 1992
- Frey, H. U. Holography - A Successful Tool for Distortion Measurements on Antennas under Space Simulation Conditions ESA SP - 304 Sept. 1990 395 402
- Frey, H. U. Nov 1995 5a.3
- Frey, H. U. 1997 301 306 3rd Int. Symposium on Environmental Testing for Space Programms
- Frey, H. U. Distortion Measurements on Antenna Dishes under Space Simulation Conditions SAE Technical Paper Series 972355 July 1997