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Gun Recoil Force

}{ \dfrac{ RD }{ 12 } \cdot 32.174049 } \) Symbol English Metric \( GRF \) = Gun Recoil Force \(lbf\) \(N\) \( m \) = Bullet Mass \(lbm\) \(kg\) \( v \) = Bullet Velocity \(ft\;/\;sec\) \(m\;/\;s\) \( RD \) = Gun Recoil Distance \(in\) \(mm\) Gun recoil...

Gravitational Torque

\) Symbol English Metric \( \tau_g \) (Greek symbol tau) = Gravitational Torque \(lbf-ft\) \(N-m\) \( m \) = Object Mass \(lbm\) \(kg\) \( g \) = Gravitational Acceleration (See Physics Constant) \(ft \;/\; sec^2\) \(m \;/\; s^2\) \( r \) = Radius...

Power System Glossary

The liquid or gas used to transfer heat from the reactor core to the steam generators or directly to the turbines. Critical Mass - The smallest mass of fissile material that will support a self-sustaining chain reaction under specified conditions....

Hydrology Glossary

- Z Kinetic Energy - The energy an object possesses by virtue of its motion. It is a scalar quantity and is dependent on the mass and speed of the object. If it moves, it has kinetic energy. Karst - A geologic formation of irregular limestone deposits...

Thrust Force for a Rocket Engine

v_e + \left( p_e - p_a \right) \cdot A_e \) Symbol English Metric \( F \) = Thrust Force \(lbf\) \(N\) \( \dot m_f \) = Mass Flow Rate of the Exaust \(lbm \;/\; sec\) \(kg \;/\; s\) \( v_e \) = Exaust Velocity \(ft \;/\; sec\) \(m \;/\; s\) \( p_e \) =...

Air-breathing Engine Net Thrust

p_e - p_a \right) \cdot A_e \) Symbol English Metric \( F_n \) = Net Thrust Force \(lbf\) \(N\) \( \dot m_f \) = Exaust Mass Flow Rate \(lbm \;/\; sec\) \(kg \;/\; s\) \( v_e \) = Exaust Velocity \(ft \;/\; sec\) \(m \;/\; s\) \( \dot m_a \) = Incoming...

Quantum Mechanics

in an atom's nucleus or specifically the average weight of naturally occuring isatobes of an element related to the mass. The atomic number or proton number is the number of protons in an atom of the element. All atoms have neutrons except for hydrogen...

American Gear Manufacturers Association

for Flexible Couplings (Inch Series) AGMA 9003-B08 - Flexible Couplings - Keyless Fits AGMA 9004-B08 - Flexible Couplings - Mass Elastic Properties and Other Characteristics AGMA 9005-E02 - Industrial Gear Lubrication AGMA 9008-B00 - Flexible Couplings...

Fourier Number

D \cdot t_c }{ Fo } }\) Symbol English Metric \( Fo \) = Fourier Number \( dimensionless \) \( dimensionless \) \( D \) = Mass Diffusivity \(ft^3\;/\;sec\) \(m^3\;/\;s\) \( t_c \) = Characteristic Time \( sec \) \( s \) \( l_c \) = Characteristic Length...

Amount of Substance

\( m \;=\; n \cdot M \) \( M \;=\; \dfrac{ m }{ n } \) Symbol English Metric \(n\) = Amount of Substance - \(mol\) \(m\) = Mass - \(kg\) \(M\) = Molar Mass - \(kg\;/\;mol\) Amount of substance, abbreviated as n, is fundamental in chemistry, and is the...

Energy

external forces or the movement released in machine movement. Radiant Energy - Energy transmitted without the movement of mass. Sound Energy - Energy that we can hear. It is a type of kinetic energy that moves through the air and other matter in the...

Impulse-Momentum Theorem

object's linear momentum. Impulse-Momentum Theorem formula Since impulse is the product of force and time, and momentum is mass times velocity, the formula is often expressed as: \( F \cdot \Delta t \;=\; m \cdot \Delta v \) (Impulse-Momentum) \( F...

Kinematic Viscosity

s\) \( \mu \) (Greek symbol mu) = Dynamic Viscosity \(lbf-sec \;/\; ft^2\) \( Pa-s \) \( \rho \) (Greek symbol rho) = Fluid Mass Density \(lbm \;/\; ft^3\) \(kg \;/\; m^3\) Kinematic viscosity, abbreviated as \(\nu \) (Greek symbol nu), is a fluid...

Kinetic Energy

v \;=\; \sqrt{ \dfrac{ 2 \cdot KE }{ m } } \) Symbol English Metric \( KE \) = Kinetic Energy \( lbf-ft \) \(J\) \( m \) = Mass \(lbm\) \(kg\) \( v \) = Velocity \(ft \;/\; sec\) \(m \;/\; s\) Kinetic energy, abbreviated as KE, is the energy an object...

Specific Heat

Heat \(Btu \;/\; lbm-F\) \(kJ \;/\;kg-K\) \( Q \) = Specific Heat Capacity \(Btu \;/\; lbm-F\) \(kJ \;/\; kg-K\) \( m \) = Mass \(lbm\) \(kg\) \( \Delta T \) = Change in Temperature \(^\circ F\) \(^\circ K\) Specific heat, abbreviated as c, is the...

Specific Volume

\(dimensionless\) Specific volume, abbreviated as \(\upsilon\) (Greek symbol upsilon), is the volume in a unit of mass. Specific volume is a intensive variable whose physical quantity value does not depend on the amount of the substance for which it is...

Vapor

\) (dry steam) Symbol English Metric \( x \) = Steam Quality \(dimensionless\) \(dimensionless\) \( m_{liquid} \) = Liquid Mass \(lbm\) \(kg\) \( m_{vapor} \) = Vapor Mass \(lbm\) \(kg\) Vapor is a gaseous state of matter that exists at or below its...

Thrust

v } \) \( \Delta v \;=\; \dfrac{ F }{ \dot m_f } \) Symbol English Metric \( F \) = Thrust \(lbf\) \(N\) \( \dot m_f \) = Mass Flow Rate \(lbm \;/\; sec\) \(kg \;/\; s\) \( v_e \) = Change in Velocity \(ft \;/\; sec\) \(m \;/\; s\) Thrust force,...

Tension

\;=\; \dfrac{ T - W }{ m }\) Symbol English Metric \( T \) = Tension \(lbf\) \(N\) \( W \) = Weight \(lbf\) \(N\) \( m \) = Mass \(lbm\) \(kg\) \( a \) = Acceleration \(ft \;/\; sec^2\) \(m \;/\; s^2\) Tension, abbreviated as T, is the force that is...

Potential Energy

\) \( h \;=\; \dfrac{ PE }{ m \cdot g } \) Symbol English Metric \( PE \) = Potential Energy \( lbf-ft \) \( J \) \( m \) = Mass \( lbm \) \( kg \) \( g \) = Gravity \(ft \;/\; sec^2\) \(m \;/\; s^2\) \( h \) = Height \( ft \) \( m \) Potential energy,...