cp specific heat at constant pressure, J/kg-K (Btu/lbm-R)

CF thrust coefficient (see Eq. 3-30)

go sea-level acceleration of gravity, 9.806 m/sec2 (32.17 ft/sec2)

Ah enthalpy change, J/kg (Btu/lb)

(Hs)a available pump suction head above vapor pressure, often called net positive suction head, m (ft)

(Hs)r required pump suction head above vapor pressure, m (ft)

Is specific impulse, sec (lbf-sec/lbf)

k specific heat ratio

m mass flow rate, kg/sec

N shaft speed, rpm (rad/sec)

Ns specific speed of pump p pressure, N/m2 (lbf/in.2)

Q volume flow rate, m3/sec (ft3/sec)

r flow mixture ratio (oxidizer to fuel flow)

S suction specific speed of pump t time, sec

T absolute temperature, K (R)

u tip speed or mean blade speed, m/sec (ft/sec)

Greek Letters

A finite differential discharge correction factor thrust correction factor r] efficiency

A. coefficient of thermal expansion, m/m-K (in./in.-R)

i¡f constant

Subscripts c chamber e maximum efficiency

/ fuel gg gas generator o oxidizer oa overall engine system

P pump

T turbine

0 initial condition

1 inlet

2 outlet

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What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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