Electric Propulsion for Space


Engineers designing electric propulsion systems must carefully select an energy storage solution that exhibits high power density, ultra-low ESR, resilience to harsh space conditions, and the capacity to sustain a high repetition rate in order to meet the power demands of the thruster system.


Quantic Evans "space-grade" capacitors are the most power dense capacitors in the industry and can meet the power demands of a thruster system while sustaining a high repetition rate. They provide  significant savings of space, weight, and power when compared to traditional capacitor technologies such as tantalum solid or aluminum polymer.

The hermetically sealed design allows for operation  in the vacuum of space and the tantalum case gives our capacitors their designation as RAD-hard. Rugged construction makes them well suited to handle extreme shock and vibration environments.

What is Electric Propulsion?

Electric Propulsion is a class of space propulsion that uses electrical power to accelerate a propellant. Unlike chemical propulsion systems, electric propulsion requires very little mass to accelerate a spacecraft, and is only limited in energy by the available electrical power on board the spacecraft. Electric propulsion is suitable for lowthrust, long-duration applications on board spacecrafts. Electric propulsion systems also give a spacecraft the ability to maintain or change its orbit, avoid collisions, and execute end-of-life deorbiting. Electric propulsion systems are well suited for all mission needs for satellites weighing from 5 kg to 1,000 kg.

A Thruster is the spacecraft propulsion device used for orbital station-keeping, attitude control, or low-thrust, long-duration acceleration.

Key Features
  • SWaP-optimized; the most power-dense in the industry
  • Meets power demands while sustaining high repetition rates
  • Ultra-low ESRcan store and discharge energy quickly
  • Leakage Current (DCL) ensures that stored energy is not lost over time
  • Reliable across wide temperature range
  • Ruggedized to withstand high altitude, extreme shock and vibration
  • Hermetically sealed - RAD hard
  • High reliability 
  • Long service life 
  • Unlimited shelf life
  • Routinely screened and qualified to NASA IEEE-INST-002; approved by ESA
  • Lead-free and RoHS compliant available

Resources to Download

Electric Propulsion in Space Applications Overview  

Whitepaper, "Specifying a Capacitor for Space-Based Applications" 


Supported Platforms

• Ion Thrusters

• Vacuum Arc Thruster

• Hall Effect Thrusters

• Pulsed Plasma Thrusters