SPACE MEPSI Micro Propulsion System

MEPSI Micro Propulsion System
XV0E10889-01
The MEMS PicoSat Inspector (MEPSI) Micro-Propulsion System (MiPS) is a cold gas propulsion
system designed for 1U CubeSats.
SPACE
Using Chemically Etched Micro System
(ChEMS™) technology, VACCO has produced a
complete propulsion system including propellant
storage, pressurization, distribution and thrusters.
This simple, highly integrated design uses a selfpressurizing liquid propellant that is expelled as a
gas.
Capable of 23 N-Sec of total impulse with up to
43,000 firings, MiPS brings true propulsion capabilities to micro-spacecraft for formation flying, attitude control and velocity change (delta-v).
Features
•
Five thrusters for pitch, yaw, roll and delta-v
•
All-welded titanium construction
•
53 mN thrust
•
Dry mass: 456 grams
•
Up to 43,000 minimum impulse firings
•
Integral pressure & temperature sensors
•
Redundant, frictionless valves
Operating Parameters
Max Operating Pressure .................................150 psia
Minimum Impulse Bit................................ 0.53 mN-sec
Proof Pressure ................................................225 psia
Operating Voltage ...................................4.0 to 6.0 vdc
Burst Pressure ................................................375 psia
Tank Pressure Sensor Output ................0.5 to 3.5 vdc
Thrust................................................... 53 mN @ 20ºC
Gas Tank Pressure Sensor Output.........0.5 to 3.5 vdc
Internal Leakage ..................... 3.6 scc/hr GN2 @ 20ºC
Coil Resistance .................................. 5.3 +/- 0.5  coil
scc/hr GN2 @ 20ºC
Pull-in Voltage............................. 3.5 vdc max @ 20°C
Operating Temperature........................... 0°C to +60°C
Drop Out Voltage ......................... 1.0 vdc min @ 20°C
Vibration..........................................................16 Grms
Mass ................................................... 456 grams (dry)
External Leakage .........1.0 x 10
-6
Cycle Life ............................................... 80,000 cycles
Performance characteristics are based on customer requirements. As such, they are not representative of component capabilities or limitations.
VACCO Industries | 10350 Vacco Street | South El Monte, CA 91733
T: (626) 443-7121 | F: (626) 442-6943 | E: space@vacco.com | W: www.vacco.com
A Subsidary of ESCO Technologies Inc.
© VACCO Industries Rev 8/13
Envelope Drawing
XV0E10889-01
Performance Characteristics
Maneuver
Thrusters
+Yaw (+X
AB
-Yaw (-X)
CD
+Pitch (+Y)
Roll 90° CW, then CD
-Pitch (-Y)
Roll 90° CW, then AB
CW Roll
AD
CCW Roll
CB
Delta V (+Z)
ABCD
Delta V (-Z)
E
System Schematic
VACCO Industries | 10350 Vacco Street | South El Monte, CA 91733
T: (626) 443-7121 | F: (626) 442-6943 | E: space@vacco.com | W: www.vacco.com
A Subsidary of ESCO Technologies Inc.
© VACCO Industries Rev 8/13
XS0E10220-01
The Palomar Propulsion System is a fully integrated
CubeSat micro propulsion system that includes a propellant tank, plenum and eight thrusters. The Palomar
MiPS is designed to occupy the center of a 3U CubeSat.
This smart system is designed to interface with the
spacecraft through an I2C data bus for command and
control.
The Palomar MiPS is primarily a reaction control system
with thrusters arranged so that use of all six degrees of
freedom (DoF) in rotation and translation are possible.
Additional propellant is available by stretching the tank
lobes, allowing for a custom propulsion system mass
and volume based on specific mission needs.
Upgrades to other propellants available.
Features
•
Over 200,000 thruster firings in a simulated
space environment
•
Liquid isobutane propellant provides high
storage density; other propellants available
•
Ten frictionless valves for thrust, plenum
pressure regulation, and filling
•
Complete propulsion system in one monolithic package
•
Eight independent thrusters
•
•
Simple command protocol for operation and
health monitoring
5V power supply and I2C serial data interface
Operating Parameters
Max Operating Pressure .................................150 psia
Cycle Life ..............................................120,000 firings
Proof Pressure ................................................225 psia
Total Impulse ................................................. 85 N/sec
Burst Pressure ................................................375 psia
Minimum Impulse Bit................................ 0.75 mN/sec
Thrust.................................................................35 mN
Operating Voltage ...............................4.75 to 5.25 vdc
Internal Leakage ........................................... 3.0 scc/hr
Peak Power............................. <5 watts (two thrusters)
scch
Dry Mass..................................................... 890 grams
Operating Temperature........................... 0°C to +50°C
Propellant Mass .......................................... 173 grams
Non-Operating Temperature................ -10°C to +60°C
Total Mass ............................................... 1,063 grams
External Leakage .................................1.0 x 10
-6
Vibration..........................................................23 Grms
Performance characteristics are based on customer requirements. As such, they are not representative of component capabilities or limitations.
VACCO Industries | 10350 Vacco Street | South El Monte, CA 91733
T: (626) 443-7121 | F: (626) 442-6943 | E: space@vacco.com | W: www.vacco.com
A Subsidary of ESCO Technologies Inc.
© VACCO Industries Rev 4/14
SPACE
Palomar Micro Propulsion System
Envelope Drawing
XS0E10220-01
Front View
Back View
Side View
Flow Schematic
VACCO Industries | 10350 Vacco Street | South El Monte, CA 91733
T: (626) 443-7121 | F: (626) 442-6943 | E: space@vacco.com | W: www.vacco.com
A Subsidary of ESCO Technologies Inc.
© VACCO Industries Rev 4/14