Cold Gas Thrusters
Overview
Moog produces cold gas thrusters in a variety of thrust ranges to meet mission requirements. Typical thrusts range from 10mN to 4N. Moog cold gas thrusters have flown on Psyche, SAFER, Spitzer Space Telescope, CHAMP, GRACE, and Pluto Fast Flyby.
| Parameter |
| ||||
| Propellant | GN2 | GN2 | GN2 | GN2 | GN2 , GAr, Xe |
| Material | Stainless Steel, Fluorosilicone | Stainless Steel, Nylon | Stainless Steel, AFE411 | Stainless Steel, Nylon | Stainless Steel, Vespel |
| Nominal Thrust | 10 mN (0.0022 lbf), 16 mN (0.0036 lbf), 40 mN (0.0090 lbf) @ 1.5 bar (21.75 psia) GN2 | 120 mN (0.027 lbf) @ 6.9 bar (100 psia) GN2 | 120 mN (0.027 lbf) @ 6.9 bar (100 psia) GN2 | 3.6 N (0.8 lbf) @ 15.7 bar (230 psia) GN2 | 1.3 N @ 90 bar (1300 psia) Xe inlet, 0.9N @ 90 bar (1300 psia) GN2 and GAr inlet |
| Specific Impulse (Nom) | > 60 sec | > 57 sec | 65 sec | 57 sec | 21 sec Xe 70 sec GN2 54 sec GAr |
| MEOP | 10.0 bar (145 psia) | 20.7 bar (300 psia) | 27.6 bar (400 psia) | 15.7 bar (230 psia) | 186 bar (2700 psia) |
| Proof | 20.0 bar (290 psia) | 41.4 bar (600 psia) | 70.0 bar (1015 psia) | 76.9 bar (1115 psia) | 279 bar (4050 psia) |
| Burst | 40.0 bar (580 psia) | 82.7 bar (1200 psia) | 111.4 bar (1615 psia) | 155 bar (2250 psia) | 465 bar (6750 psia) |
| Leakage - Internal | < 0.1 scch GN2 @ 2.5 bar (36 psid) | < 0.1 sccm GN2 @ 13.8 bar (200 psid) | < 2.8x10-4 scc/s GHe | < 2.0 sccm GN2 @ 4.1 bar (60 psig) | < 1.0 x 10-4 sccs GHe @ MEOP |
| Leakage – External | < 1.0x10-5 su/s GHe | < 1.0x10-6 scc/s GHe @ 27.6 bar (400 psid) | < 1.0x10-6 scc/s GHe | < 1.0 sccm GN2 @ 4.1 bar (60 psig) | <1.0 x 10-6 sccs GHe @ MEOP |
| Operating Voltage | 22-32 Vdc, 28 Vdc Nominal, 10 Vdc Holding | 27-29 Vdc, 28 Vdc Nominal | 22-34 Vdc, 28 Vdc Nominal | 27-29 Vdc, 28 Vdc Nominal | 28 Vdc nominal, 10 Vdc hold |
| Power | 10 W open, 1 W holding | < 35 W @ 28 Vdc, 20°C | < 10.5 W @ 28 Vdc, 20°C 1.5 W @ 10 Vdc (holding) | 30 W @ 28 Vdc, 20°C | 10.5 W nominal @ 28 Vdc @ 21˚C, 1.3W @ 10 VDc holding voltage |
| Coil Resistance | 86 Ohms at 20°C (68°F) | 26.8 Ohms at 20°C (68°F) | 75 Ohms at 20°C (68°F) | 28 Ohms at 20°C (68°F) | 74.5 Ohms nominal at 21˚C (68˚F) |
| Response – Opening | < 2.5 msec | < 3.5 msec @ 28 Vdc, 13.8 bar (200 psia) | < 5 msec | < 4 msec | < 10 msec |
| Response – Closing | < 2.5 msec | < 3.5 msec @ 28 Vdc, 13.8 bar (200 psia) | < 3 msec | < 4 msec | < 10 msec |
| Life (Cycles) | 500,000 – 2,000,000 | 20,000 | 1,000,000 | > 10,000 | > 100,000 |
| Operating Temperature | -50°C to +60°C (-58°F to +140°F) | -40°C to +60°C (-40°F to +140°F) | -25°C to +75°C (-13°F to +167°F) | -40°C to +60°C (-40°F to +140°F) | -70°C to +60°C (-94°F to +140°F) |
| Inlet Filtration | none | 10 micron Absolute | 40 micron Absolute | 10 micron Absolute | 25 micron Absolute |
| Dimensions | Ø14 mm x 57 mm long (Ø0.55” x 2.25”) | Ø14 mm x 20.3 mm long (Ø0.55” x 0.8”) | Ø19.1 mm x 41 mm long (Ø0.75” x 1.6”) | Ø6.6 mm x 25.4 mm long (Ø0.26” x 1.0”) | Ø23.8 x 53.1 mm long (Ø0.94” x 2.1”) |
| Mass | 40 grams (0.09 lbm) | 16 grams (0.035 lbm) | 70 grams (0.15 lbm) | 23 grams (0.05 lbm) | 115 grams max (0.25 lbm) |
| Heritage | CHAMP and GRACE | Spitzer Space Telescope | Spitzer Space Telescope | SAFER, Pluto Fast Flyby | GEO applications |
| Model No. | 058E143 058E145 058E146 | 058E142A | 058E151 | 058-118 | 58E163A |
