|  |  | | Prepocet z QFF na QNH 6. 2. 2007 / 09:36 | |
| | | Ahoj prosim Vas kde by som nieco nasiel o tom |
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 |  | | | Re: Prepocet z QFF na QNH 6. 2. 2007 / 10:30 | |
| | nemelo to byt QFE? QFF mi nejak nedava smysl
rozdil se pocita z nadmorske vysky letiste, priklad LKPR 1247ft. pri poklesu tlaku o 1 hpa na kazdych 28ft je rozdil mezi tlakem u more a tlakem na zemi na LKPR 44,5hpa. takze od mistniho qnh odectes tech 44 a mas QFE. pri QNH1013 mas QFE 969 a na zemi na LKPR ti to pak ukazuje 0 ft. ale je to porad v hpa, nektere ruske masinky vyuzivali tlak v milimetrech rtuti, takze tam je jeste prepocet mezi jednotkami. std tlak v mm rtuti je tusim 762 mm |
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 |  | | | | Re: Re: Prepocet z QFF na QNH 6. 2. 2007 / 10:37 | |
| | nene potrebujem z QFF je to tlak na strednu hladinu mora "Tlak měřený na stanici se přepočítává na:
hladinu moře podle barometrické formule [viz níže] (QFF) – a to tak, že ze znalosti staničního tlaku, nadmořské výšky barometru a teploty v úrovni měření redukujeme (přepočítáme) podle barometrické formule tlak na střední hladinu moře. |
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| | | | | | Re: Re: Re: Prepocet z QFF na QNH 6. 2. 2007 / 10:56 | |
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| | | |  | | | Re: Re: Re: Re: Prepocet z QFF na QNH 6. 2. 2007 / 10:58 | |
| | jooo tooto je ono diiiky 
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| | | | | Re: Re: Prepocet z QFF na QNH 6. 2. 2007 / 10:39 | |
| | QFF je taky.
Pro predstavu - QFF, QNH a QFE jsou si treba rovny v pripade, ze letiste lezi ve vysce ktera odpovida stredni hladine more.
(Pro soudruhy cekatele na PPL je to jedna testova otazka.) |
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| | | | | | Re: Re: Re: Prepocet z QFF na QNH 6. 2. 2007 / 10:50 | |
| | s QFF jsem se jako kodem nikdy nesetkal, ale nasel jsem neco zde:
http://www.auf.asn.au/groundschool/umodule3.html
QFF: the mean sea level [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 ISA and the relative humidity lapse rate is zero. This is the Australian Bureau of Meteorology method; QFF calculations differ among meteorological organisations. QFF is the location value plotted on surface synoptic charts and is closer to reality than QNH, though it is only indirectly used in aviation.
dale
The Q means a question or request for information.QDM meant a request for course to a station,QDR course from a station.A request for QNH gives you the altimeter setting that shows airfield elevation above MSL when on the ground,QFE is the altimeter setting that shows 0 feet when on the ground.The difference between QNH and QFE is called QFF,but this is never used in operations.
dale
QFE - station pressure at ground level
QFF - same as QFE but including a temperature correction
v souvislosti s teplotou jsem na http://134.176.128.63/ludru.html (v nemcine) nasel tabulku, ale abych pravdu rekl nechapu vyznam QFF kdyz se lita na 1013, QNH nebo QFE |
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| | | | | | | Re: Re: Re: Re: Prepocet z QFF na QNH 6. 2. 2007 / 10:57 | |
| |  ja to nepotrebujem do simulatora ... obratil som sa sem hlavne na ludi co lietaju v reale a maju znalosti z meteorologie vatsie ako ja .... som sa zle vyjadril
kazdopadne velmi pekne dakujem za odpovede samozrejme aj od Vas ... pomohlo aj to |
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