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Question: Low Level Navigation in (Near-) Zero Visibility


Doc3908

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Hi guys,

The other day I was flying a mission deep in the Caucus mountains with low level clouds obscuring much of the terrain. I ended up climbing above the clouds, but it made me wonder: Is there a way to fly low-level in near-zero visibility in the Hind? There's the radar altimeter, but even if it warns me, the Hind is a heavy pig, and high up in the mountains she's not exactly gonna climb fast. I have very little faith in the accuracy of "moving map". So... ????

Thanks for any advice,

Doc 


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Flew in the RNZAF P-3 Orion for seven years and we were the only aircraft in NZ that could fly IMC below MSA (fully enveloped in clouds with zero visibility, flying below the published area minimum safe altitude between mountains/islands etc) using radar for terrain avoidance.

 

IMC in a helicopter is a pretty bad idea and things can go real bad real fast! RADALT won't tell you there is rising ground ahead, but provided you stay above local area MSA then yep NAVAIDS will be fine getting you from A to B provided you have adequate IMC instrumentation with backup ADI, anti-icing etc. (which the Hind does), and are happy flying 100% on instruments in no vis conditions.

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13 hours ago, randomTOTEN said:

April_SOS_18x12Poster.png

 

 

 

0611SOSS.jpg

 

 

I figured I can type, or I can share real world posters related to your question..😎

 

 

LoL! The problem the Soviet pilots faced was that when the Communist Party said "GO", you either flew or you faced the firing squad. 😄 

Seriously, though, I was just asking if the Hind is equipped for low-level/low-visibility flying and I guess the answer is "no". I can't imagine any air-force would risk lives and equipment in bad weather if the machines are not equipped to handle it. That said, mountains are notorious for weather fronts moving in out-of-the-blue...

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5 hours ago, randomTOTEN said:

I don't believe there is any helicopter equipped for such flying.

 

MH-53J/M pave low could. it had terrain following and terrain avoidance radar. And forward looking infrared. 

not sure if the HH/MH-60 pave hawk is the same.

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10 hours ago, Doc3908 said:

 

 

LoL! The problem the Soviet pilots faced was that when the Communist Party said "GO", you either flew or you faced the firing squad. 😄 

Seriously, though, I was just asking if the Hind is equipped for low-level/low-visibility flying and I guess the answer is "no". I can't imagine any air-force would risk lives and equipment in bad weather if the machines are not equipped to handle it. That said, mountains are notorious for weather fronts moving in out-of-the-blue...


Questions remains: equipped to handle what, exactly? A ferry flight? A combat mission under marine layer conditions that are forecast to clear by the time you're on the target? Those all seem like situations that a capable pilot and commander would routinely face and succeed at.

Penetrating a high threat area with zero vis at treetop level? Probably not.

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3 hours ago, unipus said:

Questions remains: equipped to handle what, exactly?

Day and Night, Instrument and Visual Flight.

OP described the practice of attempting continued visual flight into instrument conditions (VFR into IMC), which is just an absolutely wonderful way to kill yourself in a flying machine, civilian or military.

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Oh, I'm well aware. However, if you are trained to fly on instruments, and use your charts to stay away from terrain, it's entirely doable. More dangerous in a helicopter than a fixed wing, but either way the major cause of danger does not even apply in a sim.

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Not just the low ceilings and bad visibility, but also low freezing level. Icing can kill you very fast, even in transport category aircraft let alone helicopter. While not exact science, the Garmin 430 with it's moving map, when that comes available for the Hind, can work as a jury rigged low level flying tool. What I have done is map waypoint and altitudes with safety margin over terrain on an OFP and entered those waypoints into the Garmin. Not ideal and certainly not NOE, but provided there's no great pressure differences in your route and you respect your own minimum altitudes over a given route segment and waypoint, it does provide for a tool that is better than nothing.

 

Well it seems that with  left ALT +  left SHIFT + B, you get the 430 even with Hind if you have the NS430 base module purchased. Just trying it out now. Seems only work with missions including fast, but not instant action.


Edited by Baltic Pirate
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4 hours ago, randomTOTEN said:

0813S.jpg


Really not sure what you're going on about at this point. But of course, go on filing your IFR flight plans with the DCS ATC then, I'm sure you'll have good and safe results and many successful flights...

Anyway, the Hind ships with charts that give you all the information you need. If you're really not sure what you're heading into, there's big giant numbers that tell you how high you ought to be in the absolute worst case. Won't protect you from radar, won't protect you from AI that can magically see through weather, but it is realistic and doable.

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14 hours ago, Quadg said:

 

MH-53J/M pave low could. it had terrain following and terrain avoidance radar. And forward looking infrared. 

not sure if the HH/MH-60 pave hawk is the same.

FLIR doesn't help that much in IMC.The radar of course does.

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