Spacecraft Loop Heat Pipe LHP Calculator
Two-phase thermal control: Compute porous wick capillary pumping pressure ($\Delta P_{\text{cap}}$), viscous hydrodynamic loop pressure drops, and maximum heat transport capacity ($Q_{\max}$).
Wick Microstructure & Working Fluid
Sintered nickel/titanium wick: 0.8–2.5 μm
Complete wetting: 0°
Transport Line Dimensions & Heat Load
Thermal power from payload
Vapor + liquid transport lines
Capillary Limit & Pressure Balance Output
Maximum Capillary Head ΔP_cap:
--
kPa pumping capacity
Total Hydrodynamic Loop ΔP:
--
kPa viscous resistance
Capillary Margin Safety Factor:
--
ΔP_cap / ΔP_total
Mass Flow Rate m_dot:
--
g / s two-phase circulation
| Vapor Line Friction ΔP_v: | -- |
| Liquid Line Friction ΔP_l: | -- |
| Porous Primary Wick Drop ΔP_w: | -- |
| Two-Phase Circulation Status: | -- |
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