Flow Control Unit (FCU)

Moog has a modular single string and redundant feed system that is ideal for spacecraft applications requiring electric propulsion. The system is able to regulate high pressure from a tank downstream into a thruster assembly for multiple propellant types, including Xenon and Krypton. System can be tuned for multiple different pressures and outlet ranges.

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Features

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Key Features

Feed system regulates pressure via bang bang operation
System can withstand full tank pressure, provides both regulation and 2 inhibits
Modular system allows for single string or redundant configurations • Configurable for most gas and flow rate combinations. Tank pressures up to 4400 psi.
System fill and drain valves available separately

Characteristic	Performance / Interfaces
Mass Flow Rate	1 – 14+ mg/s
Nominal Line One/Line Two Split	Line 2 = TBD ±1% of Line 1
Total Flow Accuracy	±3% or better
MEOP, Proof, Burst (Krypton)	4,400 psia, 6,600 psia (1.5X), 11,000 psia (2.5X)
System Mass	2.25 lbm
External Leakage	≤1.0^-6 sccs GHe
Internal Leakage	≤1.0^-5 sccs GHe