Homere, jesi li leteo nekad helikopterom?
Nisi. Ja jesam.
Zato ne pisi nesto o cemu ne znas.
Nijedan pilot helikoptera ne moze sleteti u tim uslovima na toj vidljivosti. Pogledaj onaj snimak sto sam okacio. E isto tako samo bez svetala.
Dakle, molim te nemoj vise pisati a da nemas pojma o cemu pises. Ako bolje znas od pilota koji imaju preko 20 godina iskustva, evo zovem odma drugara i zaposljava te. Plata je fina za nase uslove, pa evo, posalji mi podatke i vodim te sutra da po mraku sletis Gazelu na poljanu pored Bataje i usput njemu objasni kako ti to umes.
I brkas horizontalnu od vertikalne vidljivosti. Njima je bitna VERTIKALNA vidljivost. Nikakav radar, GPS ti tu ne pomaze jer se sletanja na helikopteru odvijaju VIZUELNO. Tebi treba vizuelni horizont.
Vidim da ovde niko ne zna sta je vestibularni sistem kod coveka. Proucite malo to.
Inace, ne postoji sistem na helikopterima za sletanje u takvoj vidljivosti:
The regulations allow emergency helicopters to fly VFR below VMC minima (this is true in Europe, I have no idea about FAA). So, an emergency helicopter, can continue VFR with visibility down to 1km, or even 800 meters for short periods of time (OBRATITI PAZNJU NA MINIMUME).
If the helicopter is IFR equipped and the pilot(s) IFR rated, it can switch to IFR if necessary. On the way to the accident site this might not be very useful if the weather will not allow safe descent and switch to VFR, but on the way back to the airport/hospital, it can be very useful, provided the landing site has some kind of IFR procedure. Again, ATC will usually offer full cooperation in all this switching of plans and flight rules. Concerning IFR Flight: rotocraft require special equipment to fly IFR and it is much, much more dangerous than flying aircraft IFR because you are landing off field. Each operator and pilot have different policies, but in general police helicopters will rarely if ever fly IFR, and medivacs will only fly IFR if they judge it safe. Note that flying at night is not the same thing as flying IFR. If the sky is clear it is VFR, even if it is night. Being on a medivac crew is the most dangerous regular job in the United States and hundreds have died doing it.
Znaci sam IFR let (po instrumentima) nije nikakav problem, tu su GPS, VOR, ILS i slicno. Problem je, kao sto kazem, sletanje u tim uslovima, nocu. Nekad cak i danju.
http://blog.canadianmountainho...from-the-heli-ski-pilot-s-seat
"TD: So, with GPS coordinates, could you stick a heli-ski landing with zero visibility?
MC: Absolutely not. Even the best approach systems used at airports still require some visibility. Even in theory, a zero-visibility GPS approach to a heli-ski landing would not be possible."