Load-bearing Structure of the Enclosure. Type 3
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
- 58.9°
- Spiral fins thickness
- 3±1 mm
- Circumferential fins thickness
- 3±1 mm
- Longitudinal fins thickness
- 4.2±1 mm
- Distance between intersection nodes of spiral fins
- 266.2 mm
- Distance between circumferential fins
- 133.1 mm
- High pressure metal-xenon tank unit
- Yes
- Ring material (upper/lower)
- CFRP based on M46J / B95
- 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 3 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 and can accommodate a high-pressure metal-xenon tank unit. This configuration has a 7.5-degree angle between intersection nodes of spiral fins and 58.9 degrees between adjacent spiral fins, with spiral fin thickness of 3±1 mm, circumferential fin thickness of 3±1 mm and longitudinal fin thickness of 4.2±1 mm; the upper interface ring uses CFRP based on M46J fiber while the lower ring uses B95 aluminum alloy. Glavkosmos can adapt the design to individual customer requirements on request.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
