Issue 32
I. Telichev, Frattura ed Integrità Strutturale, 32 (2015) 24-34; DOI: 10.3221/IGF-ESIS.32.03
module 5). In the event that a pressure wall is predicted to “unzip”, the survivability improvements can be achieved by adding more effective shielding or/and by varying the design parameters of the pressurized module. New protection measures will be evaluated by repeating the steps in the above design procedure until the “no rupture” conditions will be verified. The analysis of interaction of penetrative particles with equipment inside a spacecraft is out of scope of the current paper.
2
Pressurized module + shield system
1
Orbital Debris data (untrackable)
4
3
Spacecraft survived, mission continues
No
Pressure wall damage?
Yes
5
End of analysis 14
Fracture analysis
6
Pressure wall rupture? (“unzipping”)
Yes
No
9
Destruction of critical internal components?
No
7
8
Varying the design parameters of pressurized module
Varying the characteristics of shield
Yes
10
Actions to enhance the survivability?
Yes
Seal/repair of damaged pressure wall 12
No
11
Disfunctional trackable spacecraft, mitigation requirement is satisfied
13
Spacecraft survived, mission continues
14
End of analysis
Figure 1 : Design procedure of spacecraft with enhanced survivability.
25
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