TOP.09 // MATERIALS
Orbital Materials, Outgassing, Atomic Oxygen & Alloys
Al 6061-T6 vs. 7075-T7351 and Ti-6Al-4V backplates, ECSS-Q-ST-70-36C stress-corrosion cracking, ASTM E595 outgassing (TML/CVCM), RAM atomic oxygen erosion, and NiTi shape-memory alloys.
1. SatWiki Encyclopedia Specifications (4)
- SQ-EN-001
Materials and processes
Which alloys, coatings, solders and polymers a small satellite can use, and why the answers change at PocketQube scale: the sliding backplate is interface-critical, eclipse cycling fatigues solder joints, and outgassing rules differ between standards.
- SQ-EN-002
Space environment
What low Earth orbit does to a small satellite: a thermosphere whose density follows the Sun, atomic oxygen, trapped and solar radiation, a dipole-like magnetic field, strong thermal forcing and debris. PocketQubes feel each effect more strongly per kilogram.
- SQ-EN-003
Testing and qualification
How a small satellite proves it will survive launch and work in orbit: model philosophy, vibration, thermal vacuum, bake-out, functional and deployment tests. Small teams test less than agencies, and the early failure statistics of CubeSats show what that costs.
- SQ-EN-007
Magnetic cleanliness
Controlling parasitic current loops, ferromagnetic fasteners and nickel-plated battery cases that otherwise dominate disturbance torques on 50 mm picosatellites.
2. Interactive Lab Calculators & Workbenches (2)
3. Technical Notes (3)
- NL-TN-2026-014
Atomic oxygen and polymers in low Earth orbit
Polymers on the exterior of a PocketQube—solar-panel substrates, Kapton insulation, PEEK spools, UHMWPE burn lines and exposed FR-4 edges—face both high-vacuum volatile condensation and 4.5 eV ram atomic oxygen (AO). We review ECSS-Q-ST-70-02C / ASTM E595 screening limits and compute annual AO fluence and recession depth from 350 to 600 km.
- NL-TN-2026-015
First natural frequency of the backplate and launch loads
Unlike a CubeSat held along four corner rails, a PocketQube is cantilevered in its deployer by a single 1.6 mm thick sliding backplate. We derive the plate's flexural rigidity and fundamental modal frequency across Al 6061-T6, Al 7075-T73, Ti-6Al-4V and FR-4, and evaluate 3σ dynamic deflection under GSFC-STD-7000B (GEVS) random vibration.
- NL-TN-2026-020
CubeSat corner rail tribology, PC/104 stack mechanics and PQ9/CS14 backplanes
We examine the mechanical and electrical backbone of a CubeSat: the four 8.5 mm corner rails that interface with the deployer, the tribology of MIL-A-8625 Type III hard anodizing against vacuum cold welding, and the dynamic stiffness of a four-rod M3 PC/104 PCB stack compared against PocketQube 42×42 mm M2 stacks and the PQ9/CS14 backplane standard.
4. Research Monographs (3)
- SQ-R-004
Materials-initiated failures and screening gaps in CubeSat and PocketQube missions
- SQ-R-003
Non-pyrotechnic antenna deployment in PocketQube-class satellites: strain and thermal budgets for NiTi tapes and release actuators
- SQ-R-002
Materials engineering for PocketQube picosatellites: A scaling-based review and design guide
5. Engineering Course Modules (2)
- MODULE 01
The Physics of Miniature Scaling (L, L², L³)
Why shrinking a satellite from 10 cm (1U) to 5 cm (1P) changes surface-to-mass ratio, thermal time constant, and rotational inertia by orders of magnitude.
- MODULE 08
Spacecraft Materials, Outgassing & Atomic Oxygen
Al 6061-T6 vs. 7075-T7351 stress-corrosion cracking, ECSS outgassing limits (TML < 1%, CVCM < 0.1%), and LEO atomic oxygen polymer erosion.