1. Nitrous Oxide Properties Temperature (ºC) Vapor Pressure (Bar Abs.) Liquid Density (kg/m 3 ) 031.27907.4 535.47881.6 1040.07853.5 1545.10822.2 2050.60786.6

2. Flow Equations Q = C d *A(2*∆p /  ) Design parameters: –Maximum tank pressure 1000 psi –Optimum combustion chamber pressure = 550 psi –Designed pressure drop through injector = 150 psi (For atomization of liquid)

3. Valve Selection Solenoid Valves –Used for on/off flow control, electrically activated Relief Valves –Set to open at a certain pressure –Used to vent of gas or liquid in the event of overpressurization

4. Valve Selection (Cont.) Check Valves –Used to restrict flow to only one direction Needle Valve –Used to allow for manual setting of flow rate / presssure drop