Thermal Analysis and Rigid-Flexible Coupling Dynamics of a Satellite with Membrane Antenna

Table 1

Mechanical and thermal parameters of the membrane-antenna-satellite system.

Components	Material property	Value
Satellite	Length (m)	1
	Width (m)	1
	Height (m)	1
	Mass (kg)	150
	Rotational inertia (kgm^2)	25
	Rotational inertia (kgm^2)	25
	Rotational inertia (kgm^2)	25
Membrane antenna-membrane array	Young’s modulus (GPa)	2.5
	Poisson’s ratio	0.34
	Density (kg/m^3)	1530
	Length (m)	23.4
	Width (m)	5.6
	Thickness (m)	0.00025
	Heat capacity (J/kgK)	1000
	Thermal conductivity in the direction (W/mK)	0.12
	Thermal conductivity in the direction (W/mK)	0.12
	Thermal expansion (1/K)	0.00001
	Absorptivity	0.8
	Emissivity	0.8
	Reference temperature (K)	295
Membrane antenna-support frame	Young’s modulus (GPa)	40
	Poisson’s ratio	0.3
	Density (kg/m^3)	1800
	Length (m)	24
	Width (m)	7
	Cross-section area of the beam in the direction (m^2)	0.000318
	Moment of inertia of -axis for the beam in the direction (m^4)	0.00000126
	Moment of inertia of -axis for the beam in the direction (m^4)	0.00000037
	Cross-section area of the beam in the direction (m^2)	0.000877
	Moment of inertia of -axis for the beam in the direction (m^4)	0.00000112
	Moment of inertia of -axis for the beam in the direction (m^4)	0.00000132
	Heat capacity (J/kgK)	1000
	Thermal conductivity (W/mK)	32.11
	Thermal expansion (1/K)	0.00001
	Absorptivity	0.8
	Emissivity	0.8
	Reference temperature (K)	295
Membrane antenna-tension cable	Young’s modulus (GPa)	133
	Poisson’s ratio	0.36
	Density (kg/m^3)	1440
	Cross-section area (m^2)	0.000000049
	Tension of cable along -axis (N)	51.2
	Tension of cable along -axis (N)	54
	Tension of diagonal cable (N)	75.4
Membrane antenna-tension pole	Young’s modulus (GPa)	210
	Poisson’s ratio	0.3
	Density (kg/m^3)	1800
	Length (m)	7
	Cross-section area (m^2)	0.000178
	Moment of inertia of -axis (m^4)	0.0000000125
	Moment of inertia of -axis (m^4)	0.0000000125