4. Structures and Mechanisms
Learning Objectives
- Understand the role of structure subsystem in the context of spacecraft as a whole and between other subsystems
- Familiarize with typical requirements and configurations
- Differentiate phases of structures development for verification and validation
- Conduct structural analysis (load and vibe)
Structures and Mechanisms Chapter Content
4.1 Definition
4.2 Subsystem Responsibilities
4.3 Typical Requirements and Design Considerations
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- Artemis Structures Requirements
- Suggested Activity
- Requirements Compliance Matrix
4.4 General Arrangement and Design Drivers
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- Geometry
- Artemis CubeSat Kit Arrangement
- Mass
- Structural Loads
- Materials
- Process
- Geometry
4.5 Mechanisms
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- Deployers
- Restraints or Launch Locks
- Separation Mechanisms
- Ordinance Devices
- Spin Bearings
- Scan Platforms
4.6 Structural Analysis
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- Safety Factors
- Load Equations
- Ultimate and Yield Loads
- Buckling Load
- Beam Stiffness
- Beam Natural Frequencies
- Random Vibe and Acoustic Equivalent g’s
- Thermal Load
- Simple Pressurized Shell
- Fracture and Fatigue Analysis
- Finite Element Analysis
- Artemis Finite Element Analysis Results
- Suggested Activity
- Reference Documents
Launch Services Program Level Dispenser and CubeSat Requirements Document [NASA LSP-REQ-317.01] & [CubeSat Design Specifications Rev 14]
Structural Requirements Excerpt from NanoRacks External CubeSat Deployer (NRCSD-E) Interface Definition Document (IDD) [NR-NRCSD-S0004]
