On-Orbit Thermal Design and Validation of 1 U Standardized CubeSat of STEP Cube Lab

Table 2

Specification of mission payloads for STEP Cube Lab.

Payload	Specification
VER	Dimension: 30 mm × 30 mm
	Emissivity: 0.28 (at −40°C), 0.41 (at 0°C), and 0.54 (at +40°C)
PCM	Melting point: 10°C
	Total latent heat: 326 J
	Functional fluid: paraffin n-pentadecane
SEC	Optic: Fresnel lens
	Material: poly methyl methacrylate (PMMA)
	Transmission efficiency: 92% (at 400–1100 nm)
MEMS thruster	Max thrust: 3.62 N,
	Specific impulse: 62.3 sec
HRM	Allowable axial force: 3200 N
	Release time (vacuum): <0.71 s (−35°C)
	Max shock level: SRS 65 g