Spark generation for miniature plasma thruster. (Need help, new member)

In summary, the person had a bad day at work due to a failed design for a spark generator. They are seeking help for creating a spark in a hard vacuum environment and have specific requirements for the design. The person's current design involves a lever trigger system but it failed due to power and design issues. They are asking for alternative solutions for spark generation or moving the lever arm.
  • #1
PeterShaw
8
0
Had a bad day at work and my design for a spark generator failed, so I'm asking for help.

My requirements:
To create a spark in a hard vacuum environment (10^-6 mbarr)
To be ultra miniature (as a guideline about 1cm^3 is the space available)
Available power lines is 4.4v at 0.22A or 700V at 50mA
To be highly repeatable and fast acting (repetition rate 1Hz) should perform about 1e6+ repetitions
Power usage to be as low as possible (preferably under 1W)

My design:
A lever trigger system held at 700V, when it comes into contact with a ground plate it creates a spark. The concept works fine but the 'movement' of the lever arm using a spring and electromagnet failed on two accounts 1) the current and voltage requirement of the electromagnet went over the set power budget 2) the spring was too stiff (my fault due to bad design)

Solutions:
If anyone has alternative solutions to either the spark generation method or a way in moving the lever arm, it would be great to hear them as I'm running out of ideas. Cheers guys and girls.

Have fun

Pete
 
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  • #2
Can you use a small relay instead of your own electromagnet contraption?
 

FAQ: Spark generation for miniature plasma thruster. (Need help, new member)

1. How does a miniature plasma thruster generate sparks?

A miniature plasma thruster generates sparks through a process called electric discharge. This involves applying a high voltage to a gas, causing it to ionize and form a plasma. The plasma then flows through a nozzle, creating thrust.

2. What materials are needed for spark generation in a miniature plasma thruster?

The most commonly used materials for spark generation in miniature plasma thrusters are high voltage power supplies, electrodes, and a gas such as xenon. Other materials may also be used depending on the specific design of the thruster.

3. How does the spark generation process affect the overall performance of a miniature plasma thruster?

The spark generation process plays a crucial role in the overall performance of a miniature plasma thruster. It affects parameters such as thrust, specific impulse, and efficiency. Therefore, it is important to carefully design and optimize the spark generation system to achieve desired performance.

4. Are there any safety concerns with spark generation in miniature plasma thrusters?

Yes, there can be safety concerns with spark generation in miniature plasma thrusters. The high voltage used in the process can be hazardous, and precautions must be taken to ensure safe operation. Additionally, the use of gases and other materials in the thruster may also pose safety risks.

5. What are some common challenges in spark generation for miniature plasma thrusters?

Some common challenges in spark generation for miniature plasma thrusters include achieving a stable and consistent spark, minimizing electrode erosion, and optimizing the spark parameters for maximum performance. Designing a compact and efficient spark generation system can also be a challenge.

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