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9.1 Indledning………… ....................................................................................... 796
9.2 Jordens form og gradnet ........................................................................... 798
9.2.1 Længde- og breddegrader .................................................................... 798
9.2.1.1 Gradnettet ........................................................................................799
9.2.1.2 Breddeparalleller og breddegrader ..................................................799
9.2.1.3 Meridianer og længdegrader ............................................................800
9.2.1.4 Positionsangivelse .............................................................................800
9.2.1.5 Afstandsberegning ved hjælp af koordinater ...................................801
9.3 Tid……………………………. .............................................................................. 803
9.3.1 Central Europæisk tid (CET) .................................................................. 804
9.3.2 Datolinjen .............................................................................................. 804
9.3.2.1 Den internationale datolinje .............................................................804
9.3.2.2 Tidszone ............................................................................................805
9.3.3 UCT-tid /zulu-tid og lokal tid ................................................................. 805
9.3.4 Tid, hvor der må udføres VFR-flyvning ................................................. 806
9.3.4.1 Tusmørke og nat ................................................................................807
9.4 Flyvekort…………………… .............................................................................. 809
9.4.1 Korttegning ........................................................................................... 809
9.4.1.1 Krav til kort .......................................................................................810
9.4.1.2 Kort - projektionsmetoder ................................................................811
9.4.1.3 Lamberts konforme koniske projektion ...........................................811
9.4.1.4 Mercatorprojektionen ......................................................................812
9.4.1.5 Gnomonisk projektion ......................................................................813
9.4.2 Storcirkler og kompaslinjer ................................................................... 814
9.4.2.1 Storcirkler .........................................................................................814
9.4.2.2 Lillecirkler ..........................................................................................815
9.4.2.3 Kompaslinjer .....................................................................................815
9.4.3 ICAO-kortet ........................................................................................... 817
9.4.3.1 Meridianer og breddeparalleller ......................................................817
Flyveteori PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 790
