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Dopler YAK 42
PostPosted: Mon Apr 09, 2007 17:34 Reply with quote
mcdu
Joined: 12 Nov 2005
Posts: 31
Location: Montauban.France




Hi,
I have gote problem with the Dopler system on the YAK 42
maybe some one could help me understand
thanks by advance
Gil
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PostPosted: Mon Apr 09, 2007 17:50 Reply with quote
Eclipse
Joined: 07 Feb 2006
Posts: 2119
Location: LED




What is the problem?
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PostPosted: Mon Apr 09, 2007 18:00 Reply with quote
mcdu
Joined: 12 Nov 2005
Posts: 31
Location: Montauban.France




Could you explain me the functioning ?
thanks
Gil
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PostPosted: Mon Apr 09, 2007 18:52 Reply with quote
Eclipse
Joined: 07 Feb 2006
Posts: 2119
Location: LED




Doesn't it stands in English manual?

-

Working Mode - Control Mode



ehhm.. How it is in English?

- is an angle you get (becouse of wind, probably), when you fly the right way with the different angle than you should have.

It shows what kind of in grades you have.

On the screen you get 0.3* left from the ZPU (heading).

W / is a airspeed.

- is a mode selector for Terrain or Sea mode. Deppends of where your route is. Set the selector to mode (Sea) if you fly over sea for more than.. how many? 40 km? (is here some Yak-42 experts?)

- brightness

I see you have MK lights. Haven't you arrested the course system?
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PostPosted: Mon Apr 09, 2007 18:55 Reply with quote
mcdu
Joined: 12 Nov 2005
Posts: 31
Location: Montauban.France




Ok thanks.
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PostPosted: Mon Apr 09, 2007 20:34 Reply with quote
ha5mvo
Joined: 23 Jan 2005
Posts: 2233
Location: Toronto, Canada




Quote:
I see you have MK lights. Haven't you arrested the course system?

Are there any navigation systems on the YAK that need gyro heading to give an orthodromic track?

Snos = drift (wind drift angle, in this case)

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//Michael
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PostPosted: Tue Apr 10, 2007 07:29 Reply with quote
Eclipse
Joined: 07 Feb 2006
Posts: 2119
Location: LED




Yes. BTW, GPS is not a only navsystem on Yak, the original navsystem on Yak-42 is "Olkha".
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PostPosted: Tue Apr 10, 2007 07:42 Reply with quote
ha5mvo
Joined: 23 Jan 2005
Posts: 2233
Location: Toronto, Canada




Eclipse

from an answer I got from the developers, I understood the exact opposite - the principle working mode is MK, while GPK is used as backup in case of a failure..
And in the particular case of the sim the use of the GPK mode is not practical as you'll constantly need to input MagVar "on the fly".

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//Michael
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PostPosted: Tue Apr 10, 2007 08:57 Reply with quote
Eclipse
Joined: 07 Feb 2006
Posts: 2119
Location: LED




Maybe.. But if you use the flightmanual exactly, you will se that the MK lights shal be off during the alligment.
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PostPosted: Tue Apr 10, 2007 21:11 Reply with quote
BALU
Joined: 26 Jan 2005
Posts: 169
Location: URMN




Eclipse wrote:
Doesn't it stands in English manual?

-

Working Mode - Control Mode



ehhm.. How it is in English?

- is an angle you get (becouse of wind, probably), when you fly the right way with the different angle than you should have.

It shows what kind of in grades you have.

On the screen you get 0.3* left from the ZPU (heading).

W / is a airspeed.

- is a mode selector for Terrain or Sea mode. Deppends of where your route is. Set the selector to mode (Sea) if you fly over sea for more than.. how many? 40 km? (is here some Yak-42 experts?)

- brightness

I see you have MK lights. Haven't you arrested the course system?


- drift?

W? 402 / - ground speed!!!

- - when you are over the sea your distance from the land is 50 km
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PostPosted: Tue Apr 17, 2007 18:26 Reply with quote
UR5WCW
Joined: 07 Apr 2007
Posts: 20
Location: Lviv / UKLL




ha5mvo wrote:
Eclipse

from an answer I got from the developers, I understood the exact opposite - the principle working mode is MK, while GPK is used as backup in case of a failure..
And in the particular case of the sim the use of the GPK mode is not practical as you'll constantly need to input MagVar "on the fly".


Hi!
Yes, MK is the main one. MK is magnetic course, GPK - hyro course and VK is outline course which uses MK + GPK + magnetic
declination from CVM. In NAV mode from KLN-90 or GPS it uses the course from those devices.
When you switched CVM botton under PNP-72 and activate NAV from KLN-90 the course for flight is taken from KLN.
By the way, the MK light near the PNP-72 in that case does not lit, becuase the system automatically switch the VK mode, even if the switch set to MK or GPK.

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Vlad UR5WCW
-----------------
Lviv Yak42 Group
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Dopler YAK 42
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