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Helicopter Drop out?


Luckyslayer92

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that's called a vortex ring state. when the helicopter decends into it's own downwash, the blades produce drastically less lift, and the heli falls out of the sky. avoid decending straight down, or settling into the rotors' downwash, which can happen while flaring.

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as mentioned before you encountered Vortex ring state, also called settling with power.

and as stated is a condition where the main rotor down wash is recycled causing the relative flow to exceed the angle of attack, increases until the inboard and outboard portions of the blade stall.

 

once in settling with power as you start to descend and you increase collective you only make the problem worse by increasing the the flow rate further robbing you of lift.

 

It's really best to just avoid the region where it occurs. As a rule when I fly I try avoid greater than 250 feet per minute below 40 knots. This gives me a good margin of safety because I don't want to die or ball up a half million dollar machine. The really deadly region is around 700 feet per minute and less than 10 knots.

at that combination the helicopter will be very difficult to control and may require entering an auto to get out of... not an option if you're close to the ground. if you're slightly settling with power apply forward cyclic to increase speed and allow it to build before adding power. it can also be avoided by maintaining a descent angle of less than 30 degrees.

 

There are five main flight conditions likely to lead to settling with power.

 

1. A powered descent at low air speed with a High descent rate.

 

2. loss of height during a harsh flare.

 

3. executing a quick stop downwind.

 

4. a squashing recovery, when power is applied at the end of an auto

 

5. a downwind approach

 

 

so in summary just don't go there.

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Settling with power can occur when you have all three of the following:

 

At or near zero airspeed

300 feet per minute rate of descent or greater (roughly 1.6 meters per second)

Greater than 20% power

 

The third one is sometimes confusing, but it basically means that if you're hovering and you bottom the collective and drop like a rock, that is not settling with power...until you start to pull in the collective and start stalling the blades, then it becomes settling with power.

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Its too bad the sim doesnt allow you to judge which direction the wind is moving.

 

You are sure?

 

I have translated the gui-manual with prompt(not 100% i know), but it shows like there is an option to change wind direction and windspeed like in lomac.

 

Weather

For adjustment{option} of desirable weather effects the panel WEATHER serves. In her you can adjust{set up} at will a season, temperature, pressure, overcast, deposits, a wind on heights, turbulence.

Пресеты weathers

Adjustment{Option} of a fog

Adjustment{Option} of turbulence

Adjustment{Option} of a wind

Adjustment{Option} of overcast, deposits and atmospheric pressure

Adjustment{Option} of a season and temperaturesDCS Ка-50 the BLACK SHARK59

Adjustment{Option} of a season and temperatures.In this block there is a dropping out list of four seasons of year and a field of input of temperature.Adjustment{option} of overcast, deposits and atmospheric pressure. In this block there are some elements of adjustment{option}:

HEIGHT. A toddler and a field of input of height of the bottom edge{territory} of overcast.

THICKNESS. A toddler and a field of input of thickness of a layer of clouds.

DENSITY. A field of input of density of clouds in points from 0 up to 10. At density of 0 clouds is not present. At density from 1 up to 8 cumulus clouds are used. At density 9 and 10 the continuous layer of overcast is used.

DEPOSITS. The dropping out list of deposits. The list of accessible deposits depends on density of overcast and temperature of air. The rain is accessible at density of overcast above 4, a thunder-storm - above 8, at temperature of air above 0. The snow is accessible at density of overcast above 4, a snow storm - above 8, at temperature of air below 0.

Pressure. A field of input of pressure on a sea level in mm of a mercury column.

Adjustment{Option} of a wind. In this block it is possible to adjust{set up} speed and a direction of a wind on three layers 0 - 2000 - 8000 meters. Speed and a direction of a wind between the specified layers vary in regular intervals from one value to another. From height of 8000 meters the vector of a wind is constant. Speed of a wind is set in meters a second from 0 up to 50 km/s. The direction of a wind is set in degrees aside where the wind blows. That is, at an azimuth by default 0 degrees the wind blows from the south on the north.Adjustment{option} of turbulence. In this floor{field} you can set a level of turbulence in the tenth shares of meter in a second. Turbulence is maximal at the ground and falls with height.Adjustment{option} of a fog. The fog is adjusted{set up} by two elements: a toddler of thickness of a layer from a sea level up to 1000 meters and a field of conditional density from 0 up to 10. The more densely the fog, the is less visibility range in him. Пресеты weathers. In game it is created a little ready пресетов various weather subjects. Also you can edit existing пресеты at the desire.

For use пресета it is necessary to choose demanded of the dropping out list and to press the button. To save changes in пресете it is necessary to press the button. To remove пресет it is necessary to press the button. To apply weather adjustments{options} to mission it is necessary to press button OK. To leave the panel of weather without preservation of adjustments{options}-press the button the CANCELLING.

 

 

Regards Intruder

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[sIGPIC][/sIGPIC]

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I think what hitman means is the like the super technical piece of string you can find on the windscreen of a Robinson that shows you which direction the wind is coming from.

 

I found myself dumped on the ground from vortex ring after a quickstop downind...

Eagles may soar, but weasels don't get sucked into jet engines.

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I was flying in black shark when i saw something weird. When ever i flaired to slow down and stop my helicopter would fall out of the sky. What i want to know is why does it drop out of the sky when im level and at full colective? Does this happen to real helicopters and if so what is it?

 

 

 

 

The vortex ring is created by downwash, that does not cusion the helicopter on air, but reverses itself and sucks the helicopter downward...

 

Poor fellows here this happend.

 

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Quick explanation: helicopters are death traps. Do not fly one. :D

 

Heh... I always joke with my girlfriend about how many interesting ways there are to die in a helicopter. Just to make her nervous when I fly. I torture the shit out of the poor girl.

 

But SRSLY Helos rock. try landing on a mountain top in a fixed wing. sure we can't break mach, but you can't hover.


Edited by Draco
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