Alt?

[leroy1964]

Can anyone explain to me why on Cam F2, it says my Alt is 124ft but I am sitting on the ground?:helpsmilie:

 

When I am in the cockpit, I cannot work out what height I am at (apart from visual) is there a "true height" indicator in the cockpit (for say night time flying) because if I go of what CamF2 says I am going to be crashing alot. :cry:

 

During the day it is resonable as I can visualise (did I spell that right? LOL) but as I said in bad weather or night I have no idea (in cockpit) of my actual height?:huh:

 

Thanks to anyone who can help me with this.:pilotfly:

 

Cheers

[159th_Viper]

ASL (Barometric) Altitude above Sea Level vs AGL (Radar) Altitude above Ground Level.

[EtherealN]

When I am in the cockpit, I cannot work out what height I am at (apart from visual) is there a "true height" indicator in the cockpit (for say night time flying) because if I go of what CamF2 says I am going to be crashing alot. :cry:

 

Hud, top right. There it'll say things like "110p". The "P" is not a "P", it's an "R" (cyrillic), for "radar". That is the distance measured by the radar altimeter below the tailplane. Above 300 meters it switches to barometric (above sea level). Also do remember that the Ka-50 is built to operate on proper units, not those imperial(ist) units, so you'll be getting that info in meters.

 

For night time flying, I recommend equipping NVG's.

 

Also, the manual section about instrumentation might be a goldmine for you. ;)

Edited June 2, 2010 by EtherealN

[winz]

Also, on there is a knob on the left-down side of the barometric altimeter that let you set the referenced pressure (that in turn moves your zero level up and down) it is wise to set it so that the altimater displays 0 while you are on your home FARP.

[EtherealN]

...and then you'll get false readings for general flying if your altitude radar goes out of commision for any random 7.62mm reason. ;)

 

What you are referring to winz is QFE altimeter setting. This is indeed the standard method in russia, but in the west the common method is to use QNH - that is, set it to indicate 0 at sea level. I feel that the latter is best since you are quite likely to know the altitude of your plate - if your FARP is 100 meters above sea level, you'll have the ground at 100 meter reading when at the farp. This way you can look at any aeronautical chart's altitude references and not have to do any conversion when comparing an obstacle's altitude with your barometric altitude. There are some services and activities in the west that use QFE as well - swedish gliders usually work from QFE due to it's military roots, but swedish military has switched to QNH.

Edited June 2, 2010 by EtherealN

[winz]

I know all of that, but is there any way to force the controlers to give you QNH pressure?

You can open the map and set altitude according to the it displays for your chopper, but I don't like that workaround.

[Frederf]

When you say "inbound" or request takeoff they should give you the value. If you want an "F10-less" way to set the altimeter to MSL, use the ABRIS GNSS altitude, very accurate if the satellite picture is good.

[leroy1964]

Thanks

 

Hud, top right. There it'll say things like "110p". The "P" is not a "P", it's an "R" (cyrillic), for "radar". That is the distance measured by the radar altimeter below the tailplane. Above 300 meters it switches to barometric (above sea level). Also do remember that the Ka-50 is built to operate on proper units, not those imperial(ist) units, so you'll be getting that info in meters.

 

For night time flying, I recommend equipping NVG's.

 

Also, the manual section about instrumentation might be a goldmine for you. ;)

 

Yeah thanks, I printed it at work, I had to print it in two halves as it is so large, but like most I jump right in (me bad LOL) I will go pick up this wad of paper and scan through, huge manual though, A4 paper pages ran into the hundreds from memory.

 

Thanks for the suggestion, I am not being lazy but the manual is huge and in my case in binded in two halves. Couldn't find a binder big enough.

 

Cheers:thumbup:

[leroy1964]

Love your opening line

 

...and then you'll get false readings for general flying if your altitude radar goes out of commision for any random 7.62mm reason. ;)

 

What you are referring to winz is QFE altimeter setting. This is indeed the standard method in russia, but in the west the common method is to use QNH - that is, set it to indicate 0 at sea level. I feel that the latter is best since you are quite likely to know the altitude of your plate - if your FARP is 100 meters above sea level, you'll have the ground at 100 meter reading when at the farp. This way you can look at any aeronautical chart's altitude references and not have to do any conversion when comparing an obstacle's altitude with your barometric altitude. There are some services and activities in the west that use QFE as well - swedish gliders usually work from QFE due to it's military roots, but swedish military has switched to QNH.

 

Yep, now I understand, it is clear as ... mud :huh: however your opening line I thought was very funny.

[leroy1964]

Thanks

 

When you say "inbound" or request takeoff they should give you the value. If you want an "F10-less" way to set the altimeter to MSL, use the ABRIS GNSS altitude, very accurate if the satellite picture is good.

 

Yeah I guess that is a logical choice, I have been looking at the map and that gives lots of info. Cheers:thumbup:

[leroy1964]

Thanks

 

Also, on there is a knob on the left-down side of the barometric altimeter that let you set the referenced pressure (that in turn moves your zero level up and down) it is wise to set it so that the altimater displays 0 while you are on your home FARP.

 

Thanks, I will explore that option, I am seriously going to have to read the wad of paperthat comes in the shape of this huge manual.:book:

 

Cheers:thumbup:

[EtherealN]

On the former, leroy, do note that the PDF has a search feature. If you wonder about something small, no need to leaf through a wad of papers, just type "altitude" into the search field in Adobe acrobat and hit the enter key.

 

As for the response I made to the other guy, seriously speaking do not worry about it. If you don't know where the altimeter is you are not at a spot to worry about different barometric settings. ;)

 

Remember, when you are asking for someone else's time to help you out, it's only polite to first at least try to figure it out on yourself. Checking the manual is included in that. ;)

Edited June 2, 2010 by EtherealN

[leroy1964]

Thanks

 

On the former, leroy, do note that the PDF has a search feature. If you wonder about something small, no need to leaf through a wad of papers, just type "altitude" into the search field in Adobe acrobat and hit the enter key.

 

As for the response I made to the other guy, seriously speaking do not worry about it. If you don't know where the altimeter is you are not at a spot to worry about different barometric settings. ;)

 

Remember, when you are asking for someone else's time to help you out, it's only polite to first at least try to figure it out on yourself. Checking the manual is included in that. ;)

 

I will do as you suggest, look it on the pdf. I did print the whole manual so i will use the pdf as a search option in the 1st instance. Again thanks :)