Project Overview:
Develop the Advanced Stirling Radioisotope Generator (ASRG)

Customer:
Lockheed Martin Space Systems

Services Performed:
PEI provided design and structural analysis for the ASRG housing and internal components from preliminary design phase through fabrication of qualification test units.

Structural Analysis:

• Generated system level finite element model using FEMAP software
• Modal analysis performed using NX/NASTRAN
• Performed random vibration analysis with force limiting
• Performed sine pulse analysis
• Performed acoustic analysis on radiator fins and prototype shunt radiator
• Provided modal analysis and model tuning and test correlation
• Generated modal transient response analysis and study of Stirling engine synchronization
• Performed fatigue and fracture analysis
• Performed structural analysis of ceramic thermal insulation

Engineering Design (PTC Creo):

• Developed mass model design
• Provided the preliminary design of spacecraft interface adapter
• Incorporated ASRG housing modifications to meet structural requirements
• Designed Stirling engine interface tube