QFE,QFF and QNH are summarized words.what are unsummarized form of them?

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QFE =
A software development acronym for Quick Fix Engineering. This is the Microsoft and Intel term for a hotfix

A networking hardware acronym standing for Quad Fast Ethernet, a type of vendor-specific network card with four network interfaces, mostly used in Solaris Operating System

QFE is as acronym for "Qt FTN Message Editor", a message editor for Fidonet

QFF =

QFF is a Q code. It is the MSL pressure derived from the barometric pressure at the station location by calculating the weight of an imaginary air column, extending from the location to sea level, assuming the temperature and relative humidity at the location are the long term monthly mean, the temperature lapse rate is according to ISA and the relative humidity lapse rate is zero.

QFF is the location value plotted on surface synoptic chart and is closer to reality than QNH, though it is only indirectly used in aviation.

QNH =

QNH is a Q code. It is a pressure setting used by pilots, air traffic control (ATC) and low frequency weather beacons to refer to the barometric altimeter setting which will cause the altimeter to read altitude above mean sea level within a certain defined region. This region may be fairly widespread, or apply only to the airfield for which the QNH was given. An airfield QNH will cause the altimeter to read field elevation on landing irrespective of the temperature. In the UK the lowest forecast value of QNH for an altimeter setting region is called the "Regional Pressure Setting" and may be used to ensure safe terrain separation when cruising at lower altitudes. In some parts of the world a similar procedure is adopted and this is known as "Regional QNH" however this name has been modified to the above in the UK for reasons of ambiguity.


Cant help but notice that your into aviation? =P en.wikipedia.org 100% 2 Votes