Outside Air Temperature gauge?

[flyboy101]

Is there a gauge somewhere that i am missing that displays outside air temperature, so I know when to use deicing equipment?

[Esac_mirmidon]

Temperature inserted from the mission editor. This not change in the whole mission. Always the same.

[Vekkinho]

Do you experience icing during flight?!

 

If not, no need for deicing!

[wolfast]

at higher altitudes ...and over the mountains (4000m+) I get a message from the EKRAN that tells me to turn on de-icing systems.

Edited December 4, 2008 by wolfast

[tank000]

Yeah I agree sometimes at higher elevation things get nippy

[tusler]

OAT Guage

 

If you look at the overhead in back of the roof window you will see a outside air temp gauge there. I do not know if it actually is functional or not. Since we know what the temp is by other means it is really not needed.

[flyboy101]

yea i was thinking the gauge overhead was the temperature, but I guess it not functional because i've never seen it move at all, and you would expect temp to decrease as you increase in altitude.

[AlphaOneSix]

It's not functional. :(

[V1Rotate]

gah?! then why have deicing or anticing systems? In our operation with JT8s we would always put the engine anti-ice on in temperatures below 10C when in visible moisture. I could imagine its similiar for the BS engines. Using these systems sap engine power, so I would like to know when I would have to use it and when I can turn it off!

[EvilBivol-1]

It simply has not gotten implemented in the simulation (yet). The icing modeling works all on its own regardless of a functional OAT gauge in the pit. :)

Edited December 5, 2008 by EvilBivol-1

[Slayer]

When I was over 4k in the mountains, EKRAN started saying to de-ice and I fumbled around a bit looking for the buttons. Next thing I know my blade tips hit eachother and I was spiraling toward the ground...Pretty sure it was due to ice since I was in level flight not stressing the rotors or anything.

[EvilBivol-1]

That's possible. Ice will build up on the rotors and affect their stability. Ice will also build in the engine inlet and affect the airflow to the engine.

Edited December 5, 2008 by EvilBivol-1

[Slayer]

That's possible. Ice will build up on the rotors and affect their stability. Ice will also build in the engine inlet and affect airflow to the engine.

 

So that stuff is actually modeled? Amazing attention to detail. I figured it was just a fluke til I saw this thread.

[Sentonal]

Long story short... Always, ALWAYS turn on de-iceing! The fact that it may be modeled in the future makes it worth it to make the practice a habit.

[EvilBivol-1]

So that stuff is actually modeled?

Yes, ice formation is currently modeled in the simulation for both the rotor blades and engine inlets. In all likelihood, the model will be made more detailed in a future update, to include various free water content values for atmospheric conditions such as clouds, fog, etc. Dust effects are also modeled, so flying low and slow will impact your engine performance to the point of killing it if you fail to engage the dust-protection system.

 

What is *not* implemented in the current version is the cockpit OAT gauge.

Edited December 5, 2008 by EvilBivol-1

[AlphaOneSix]

Always, ALWAYS turn on de-iceing!

 

Not above 5 degrees C! Anytime you dip below 5C, your anti-ice/de-ice should be on. Above 5C, you can have it on, but it reduces your available engine power (since it bleeds hot air from the engine compressor, just like the dust protectors, which also reduce engine power available). I doubt it's modeled, but leaving your rotor de-ice on when it's warm outside typically reduces the lifespan of your rotor blades (or it could...theoretically it also reduces the life of your a/c generators, as the rotor de-ice system uses a huge amount of electricity).

 

The fact that it may be modeled in the future makes it worth it to make the practice a habit.

 

EB already said it, but icing is already modeled, it's just the cockpit OAT gauge that isn't (yet).

[Weta43]

From memory, so is the appropriate rate of cooling with altitude (?), so if you're going high, turn on the heating.

[TX-EcoDragon]

From memory, so is the appropriate rate of cooling with altitude (?), so if you're going high, turn on the heating.

The standard lapse rate is considered to be 2 degrees C per 1,000 feet of altitude. It changes based on humidity and other factors, but that's the value that is generally used. It's pretty nice to see this included in BlackShark, but an OAT gauge would indeed be nice!!

[Bucic]

In metric system it's about 0.5 deg C temperature drop for every 100m altitude increase.

For quick calculation

t=t0-(alt/100*0.5) -> t=t0-alt/200

So for example if the temp. at sea level is t0=20 deg C then the temperature at 3000m is t=20-3000/200=5 [deg C]

[Coolhnd1]

I have to laugh a bit that you went to all the trouble of simulating all those complex electronics and systems including even icing effects and then neglected to simulate a working temperature gauge. Probably one the simplest instruments on the entire helicopter!

 

I am really looking forward to this game (sorry, simulation!). I can only hope that my ankle (which I broke a few months ago) is healed enough to let me play the game properly when the English version comes out.

[manbird]

I have to laugh a bit that you went to all the trouble of simulating all those complex electronics and systems including even icing effects and then neglected to simulate a working temperature gauge. Probably one the simplest instruments on the entire helicopter!

 

I am really looking forward to this game (sorry, simulation!). I can only hope that my ankle (which I broke a few months ago) is healed enough to let me play the game properly when the English version comes out.

 

 

In real life, the use of the Anti Icing equipment is a standard operational procedure that does not require the pilot to look up every ten minutes to note the temperature of the guage.

 

You will turn it on at 3000+m or in visible icing conditions or in clouds. You will also turn it on if the temperature is below XX degrees on the ground., this temperature should be noted in your flight briefing or in your mission editor. Simple as that.

[geogob]

Agreed. You hardly ever look at the outside temperature gauge to determine if you need to engage deicing systems. Furthermore, temperature alone is not an indicator of icing conditions. Here, we often fly at temperatures well below -15°C on aircraft that are not equipped with deicing equipment. Avoiding icing conditions is crucial and the temperature is really not a good indicator.

 

I don't think the icing model goes that far in DCS (following previous statements about possible future upgrades of the model).

 

On the piper cherokee, I found that the best use for the outside air temperature indicator is actually to look at the probe "pitot" to watch for ice buildups :P

[redberon2003]

mmm yes, Developer comment might be good on this, I fly a 172S Regularly here in Colorado, things to Note about Icing

 

it Requires Visible Moisture - Ie... a Cloud, Rain, Sleet, or Snow

the temperature that Icing becomes a big factor is a bit below 0*, and the reason for this - the faster it's moving, the more friction, more friction more heat, Airplanes do their own De-icing work to a *Small* extent :pilotfly:. by that standard, why do my engines die when flying over the mountains in partly cloudy weather? - when avoiding clouds, the aircraft should have No need what-so-ever for Anti Icing in temperatures well below Zero. a Cloud at that altitude is something to worry about though :noexpression:

[ruprecht]

An OAT gauge would be simple to implement in LUA. Presumably you know the mission temperature (is this at the starting airfield or at MSL?) or could enter it into the gauge, and you can get the aircraft altitude from LUA, so a quick calculation on the adiabatic lapse rate would get you a good approximation of OAT. Maybe even a warning to engage anti-icing :)

[ARM505]

From the Boeing 737 manual (just for example) - use engine nacelle anti ice when TAT (total air temperature, ie Static air temp plus the increase in temp due to compression heating, if I can call it that) is below 10 deg C, AND in visible moisture. The key being the temp, combined with visible moisture. You shouldn't be able to ice the rotor blades, regardless of temp, without being in rain, sleet, snow, cloud, mist, fog etc as far as I can tell, but then I could be missing something.