Design and Stress Analysis of Extraterrestrial ... - The Black Vault

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The ampoule must not breakc upon impact with thqgroUnd.
Figure 2.61 shows the'design of a 210 V1 isotope installation.
The working medium is the isotope strontium-90, te temperaequre of
the hot junction of the converte' is 530'C, and the temperature of
the cold junction is 3800C. The installation 1 consists of a source
of energy 1, 2, the:rmal conver-ters 3,!4, 5, and a thbrmal capacity
control system 6, 7, 8, 9.
The isotopic source i and the thick-walled housing 21heats!
the liquid metal between the two shylls 31 and 1 of the installation's
housing and the hot junction of the thermal converter 5.' In the
initial stage of operation excess therzhal capacity is discaided into
space, for which the control system is designed. This system,
consists of a movable radiator-screen 6,1supports 7,
and flaps
"which are turned relative to the immovable axes 8. T..e flaps are
opened by supports 7 during mdvemen't of the rAdiat~r-screen'as
a result of thermal expansiqn of the liquid metal and deformation of
the sylphon bellows 10. , *'
Figure 2,62 shows one of the possible designs of lbw-power
isotope installations-. I ,
Ampoule stress analysis
The analyzed modes of the ampoule housing ard:
- operating mode; the p~rinclpal 16ading of the ampoule is
due to the helium pressure at the end of operationq;
process in
- technological mode; thermal stresses arising with the cooling
the ampoule walls during transport are examined;
- emergency mode; the s 1 trength of the ampoule during fall i~s
examined.
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