Другие журналы

. A B C D E F G H I J K L M N O P R S T U V W Y Z К М С Т

Denisov

Main approaches to formation of a thermal vacuum test program of precision mirror reflectors of space antennas
Engineering Education # 08, August 2013
DOI: 10.7463/0813.0612062
An obligatory element of mirror space antennas is a reflector which is a thin-walled shell of a parabolic or hyperbolic form. When a spacecraft enters the area of the Earth's shadow, temperature changes may cause temperature deformations; this may lead to distorting the shape and interfering with radiocommunications. For this reason, design decisions regarding mirror reflectors of space antennas must be confirmed by ground tests. A new method for the thermal vacuum test of a full-scale precision space reflector made of carbon fiber-reinforced plastic was proposed in this work. Stability of the reflector’s shape within a wide range of temperatures was estimated by a contactless method; this method is based on heating of a reflector with a solar radiation simulator in a vacuum chamber with its walls cooled by liquid nitrogen.
 
SEARCH
 
elibrary crossref ulrichsweb neicon rusycon
Photos
 
Events
 
News



Authors
Press-releases
Library
Conferences
About Project
Rambler's Top100
Phone: +7 (915) 336-07-65 (строго: среда; пятница c 11-00 до 17-00)
  RSS
© 2003-2024 «Наука и образование»
Перепечатка материалов журнала без согласования с редакцией запрещена
 Phone: +7 (915) 336-07-65 (строго: среда; пятница c 11-00 до 17-00)