2024-03-13 Meeting notes

Date

Mar 13, 2024

Meeting to discuss propellant feed system for CPLC engine.

Discuss feed system
- Identify important stats such as line size, flow velocities, m_dot, etc.
- Consider engine name
USLI style documentation (Proposal, PDR, CDR, etc.) for the engine.

Time	Item	Presenter	Notes

Time	Item	Presenter	Notes
	Max N2O flow velocity		P*V=45 MPA m/s (4.4.2 EIGA Oxyegen piping systems) “If 1.5 MPa, abs (225 psia) < P <10 MPa, abs (1500 psia) then P • V = 45 MPa, abs • m/s (22 500 psia • ft/s)” https://www.eiga.eu/uploads/documents/DOC013.pdf 0.5 “ pipe
	Found individual m_dot from MR		0.88 kg/s for OX 0.22 kg/s for IPA
	Applied that to piping		Used m_dot=rhoVA Used rho of 915.4 kg/m^3 for OX rho of 788.9 kg/m^3 for fuel Used: CPLC_feed_system_tubing_sizing.m
	Rounding		We got a min tube size (caveats involved here) of 0.42 in. We rounded up to 0.5 in. This gives us the safer COTS tubing and gives a lower (safer) velocity per EIGA paper linked above). ALERT: EIGA paper covers oxgen N2O, this is a conservative route in terms of flow velocity.