RCAIDE.Library.Attributes.Materials.Vacuum_Cellular_Multilayer_Insulation

Vacuum_Cellular_Multilayer_Insulation

class Vacuum_Cellular_Multilayer_Insulation(*args, **kwarg)

Bases: Solid

A class representing Vacuum Cellular Multilayer Insulation (VCMLI) material properties, used extensively in aerospace cryogenic and thermal protection systems.

density

Material density in kg/m³ (65).

Type:

float

thermal_conductivity

Heat conduction coefficient in W/(m·K) (0.005).

Type:

float

specific_heat_capacity

Specific heat at constant pressure in J/(kg·K). Typically ~1000 J/(kg·K), but not explicitly set here.

Type:

float

Notes

Vacuum Cellular Multilayer Insulation (VCMLI) is a highly effective cryogenic insulation material, consisting of alternating reflective and spacer layers maintained under Vacuum Cellular. It provides extremely low thermal conductivity, making it the material of choice for liquid hydrogen storage tanks, space vehicle insulation, and other cryogenic systems.

Unlike metals or structural solids, VCMLI is not intended for carrying significant mechanical loads. Its primary function is to reduce radiative and conductive heat transfer.

Definitions

‘Multilayer Insulation (MLI)’

A thermal insulation system consisting of multiple thin reflective layers separated by low-conductivity spacers and maintained under Vacuum Cellular.

‘Thermal Conductivity’

The property of a material to conduct heat, measured in watts per meter-kelvin.