international standard atmospheric pressure and lapse rate

Vocabulary flashcards covering International Standard Atmosphere values and Environmental Lapse Rate constants from the lecture notes.

ISA

International Standard Atmosphere

hPa

Hectopascals

Mean Sea Level ISA Pressure

Standard atmospheric pressure at mean sea level, defined as $1013\,hPa$

Mean Sea Level ISA Temperature

Standard temperature at mean sea level, defined as $15\,^\circ\text{C}$

Mean Sea Level ISA Density

Standard air density at mean sea level, defined as $1.225\,kg\,m^{-3}$

ELR

Environmental Lapse Rate

Environmental Lapse Rate (Pressure Rate)

The rate of pressure decrease with altitude, defined as a decrease of $1\,hPa$ per $30\,ft$

Environmental Lapse Rate (Temperature Rate)

The rate of temperature decrease with altitude, defined as a decrease of $2\,^\circ\text{C}$ per $1000\,ft$