Electric Propulsion Mechanical Regulators

Single and Two Stage Designs

101-132-1-Mechanical-Regulators-grey-bckgrd-700x400.psd


Moog's EP Mechanical Regulators were developed based on experience from the Pluto Fast Fly-By Mission and ROSAT programs. These regulators have been qualfied and have flown for more than 25 years. The two stage regulator is a forward cascading design.

 

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Key Advantages

  • All welded design to prevent external leakage
  • Titanium construction
  • Transition joints available if CRES tubes are needed
  • Absolute pressure sensing bellows
101-132-1-Mechanical-Regulators-grey-bckgrd-700x400.psd
101-133-1-Mechanical-Regulators-grey-bckgrd-700x400.psd

 

Characteristic Single Stage Two Stage Two Stage
Inlet Operating Pressure [psia(bar)] 88 to 2,700 (6.07 to 186) 100 to 2,000 (6.9 to 138) 88 to 2200 (6.07 to 152)
Proof Pressure [psia(bar)]

4,050 (279) Inlet

150 (10.3) Outlet

3,000 (206.9) Inlet

3,000 (206.9) Interstage

80 (5.52) Outlet

3300 (228) Inlet

3300 (228) Interstage

150 (10.3) Outlet

Burst Pressure [psia(bar)]

8,100 (558) Inlet

300 (20.7) Outlet

4,000 (275.9) Inlet, Interstage, and Outlet at the same time

5500 (379) Inlet

300 (20.7) Outlet

Regulated Outlet Pressure [psia(bar)] 35.55 to 38.45 (2.45 to 2.65)

20.15 to 23.25 (1.390 to 1.603) First Stage

20.15 to 22.70 (1.390 to 1.566) Second Stage

20.15 to 20.95 (1.390 to 1.445) Both Stages 

38.5 (2.65) First or Second Stage Nominal

37.0 (2.55) Combined in Series

Max Lock-up Pressure [psia(bar)] 50 (3.45)

25.25 (1.741) First Stage

23.30 (1.607) Second Stage

22.55 (1.555) Both Stages

38.9 (2.68) Max Combined in Series
Flow 4 mg/s Xe nominal, 60 mg/s Xe max 4.5 mg/s Xe max 33.2 mg/s Xe (Specification Limit)
Leakage per Seat, Internal [scc/hr GHe] 3 3 3
Leakage, External [scc/s Ghe] 1E-6 1E-6 1E-6
Operating Cycles  12,000 40,000 40,000
Weight [lbm (g)]  0.99 (450) 2.19 (994) 2.19 (994)
Operating Temperature Range [ºF (ºC)] 

61 to 140

(16 to 60)

60-131

(15.5 to 55)

60-140

(15.5 to 60)

Representative Model Numbers -050-857 (PMA) -050-823 (XIPS) -050X1246