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7/16/2023

Research into System changes if we change the Helios oxidizer from LOX to something else, so that we can maybe transport it ourselves with EHS approval.
 Points of interest:
  • Handling safety
  • Changes to safety procedures
  • Any necessary feed system changes?
  • Injector interactions (how does gas work?)
  • Change in pressurization
  • Burn time and chemistry, performance
  • anything else that is interesting

7/27/2023 Wed

Goals:

  1. Discuss NOX research findings

We are considering using NOX instead of LOX in the case that we cannot transport LOX to the testing site. It seems that even though NOX is less dense than LOX (it's gaseous) the pressure drop with NOX is higher (the Manual valve has a lower flow coeff), potentially meaning lower thrust. We found that our system is compatible with NOX with some minor changes, such as finding the right starting pressure for the N2 pressure tanks. Overall, it would be less effective.

Also, the whole reason why we would consider NOX is becuase it's less dangeous (non cryogenic and wouldn't fill a room if opened). We would be able to transport NOX without EHS approval. NOX is also ~$400 per bottle, where LOX is ~$20.

The abillity of gaseous NOX to mix with Ethanol (in comparison to LOX) was not researched yet.

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