کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5444137 1511030 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A lightweight thermal heat switch for redundant cryocooling on satellites
ترجمه فارسی عنوان
یک سوئیچ حرارتی سبک وزن برای سرخوردگی بیش از حد در ماهواره ها
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
A previously designed cryogenic thermal heat switch for space applications has been optimized for low mass, high structural stability, and reliability. The heat switch makes use of the large linear thermal expansion coefficient (CTE) of the thermoplastic UHMW-PE for actuation. A structure model, which includes the temperature dependent properties of the actuator, is derived to be able to predict the contact pressure between the switch parts. This pressure was used in a thermal model in order to predict the switch performance under different heat loads and operating temperatures. The two models were used to optimize the mass and stability of the switch. Its reliability was proven by cyclic actuation of the switch and by shaker tests.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryogenics - Volume 83, April 2017, Pages 31-34
نویسندگان
, , ,