Load-bearing Structure of the Enclosure. Type 2
Glavkosmos
Cylindrical CFRP grid-shell load-bearing structure for mounting spacecraft subsystems and equipment.
Technical specifications
- Angle between intersection nodes of spiral fins
- 7.5°
- Angle between two spiral fins
- 42°
- Spiral fins thickness
- 10±1 mm
- Circumferential fins thickness
- 4±1 mm
- Longitudinal fins thickness
- 10±1 mm
- Distance between intersection nodes of spiral fins
- 396.25 mm
- Distance between circumferential fins
- 144.7 mm (251.5 mm)
- High pressure metal-xenon tank unit
- Yes
- Ring material (upper/lower)
- CFRP based on M55J / CFRP based on M55J
- Flight heritage
- Flight-qualified since 2000
- Construction
- Cylindric grid shell made from CFRP with two interface rings
About
The Load-bearing Structure of the Enclosure Type 2 is a larger cylindrical grid shell made from carbon-fiber-reinforced plastic (CFRP) with two interface rings, produced by Glavkosmos for spacecraft bus construction. Its purpose is mounting spacecraft subsystem structural elements and equipment, forming the primary load-bearing shell of the spacecraft enclosure. It has been flight-qualified since 2000 and can accommodate a high-pressure metal-xenon tank unit. This configuration uses CFRP based on M55J fiber for both interface rings, with a wider spiral-fin geometry than the Type 1 variants: a 7.5-degree angle between intersection nodes, 42 degrees between adjacent spiral fins, thicker fins (10±1 mm spiral, 4±1 mm circumferential, 10±1 mm longitudinal) and greater spacing between nodes (396.25 mm) and circumferential fins (144.7-251.5 mm). Glavkosmos can adapt the design to individual customer requirements on request.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
