Load-bearing Structure of the Enclosure. Type 4
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
- 4.5±1 mm
- Circumferential fins thickness
- 3±2 mm
- Longitudinal fins thickness
- 6±1 mm
- Distance between intersection nodes of spiral fins
- 396.24 mm
- Distance between circumferential fins
- 198.12 mm
- High pressure metal-xenon tank unit
- No
- Ring material (upper/lower)
- CFRP based on M46J / CFRP based on M46J
- 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 4 is a 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. Unlike several sibling variants, this configuration does not accommodate a high-pressure metal-xenon tank unit. It has a 7.5-degree angle between intersection nodes of spiral fins and 42 degrees between adjacent spiral fins, with spiral fin thickness of 4.5±1 mm, circumferential fin thickness of 3±2 mm and longitudinal fin thickness of 6±1 mm; both interface rings use CFRP based on M46J fiber. Glavkosmos can adapt the design to individual customer requirements on request.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
