unstable air


unstable air
A mass of air whose temperature lapse rate is greater than that of the air surrounding it. If this mass of air is forced upward for any reason, it will continue to move upward. Its speed will increase as it moves up, because the environmental lapse rate is higher than the dry lapse rate.
Environment lapse rate (ELR) > Dry air lapse rate (DALR) > Saturated air lapse rate (SALR)

Aviation dictionary. 2014.

Look at other dictionaries:

  • conditionally unstable air — Unsaturated air that will become unstable if it becomes saturated. Unstable air rises because its lapse rate is lower than the environmental lapse rate (i.e., it is warmer than the surrounding air). A parcel of dry air if displaced vertically… …   Aviation dictionary

  • Air gun — Air rifle and Air pistol redirect here. For other uses, see Air gun (disambiguation) An air gun (air rifle or air pistol) is a rifle or pistol which fires projectiles by means of compressed air or other gas, (in contrast to a firearm which uses… …   Wikipedia

  • Air-raid shelter — in Tateyama[disambiguation needed  …   Wikipedia

  • Air pollution dispersion terminology — describes the words and technical terms that have a special meaning to those who work in the field of air pollution dispersion modeling. Governmental environmental protection agencies (local, state, province and national) of many countries have… …   Wikipedia

  • Air superiority fighter — An air superiority fighter is a type of fighter aircraft intended to enter and seize control of enemy airspace. Air superiority fighters are usually expensive aircraft, and procured in lesser numbers compared to smaller and generally more limited …   Wikipedia

  • Air Alpes — Infobox Airline airline = Air Alpes image size = IATA = LP ICAO = ALP callsign = AIRALPES founded = 1961 commenced = ceased = 1981 hubs = secondary hubs = focus cities = frequent flyer = lounge = alliance = subsidiaries = fleet size =… …   Wikipedia

  • Air mass — For other uses, see Air mass (astronomy) and Air mass (solar energy). Different air masses which affect North America, as well as othe …   Wikipedia

  • Ram Air Progression System — RAPS or Ram Air Progression System is a parachuting training system designed to take a student from beginner to the FAI A License (or Category 8) using square ram air canopies.ystemThe RAPS system was developed from the Static Line Rounds system …   Wikipedia

  • Adam Air Flight 574 — Flight Route Accident summary Date 1 January 2007 …   Wikipedia

  • Clean Air Act (United States) — Clean Air Act Full title Clean Air Act of 1963 Acronym CAA Effective Dec. 17, 1963 Citations Public Law P.L. 88 206 …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.