Page Comparison

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=rho*V*A

• 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

Image Added

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.

Image Added