Simviation Forum - Question on real EFIS panel function.

Apr 24^th, 2006 at 9:15am

JBaymore Offline
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I posted this question (url below) up in the "Aircraft Design" forum.... 'cause I thought that was the best place for it. But so far, not getting too many definitive answers. Wink

Thought I'd try scaring up some "knowledge base" down here. Take a look at:

http://www.simviation.com/cgi-bin/yabb/YaBB.cgi?board=airc;action=display;num=11...

So if anyone can tell me what exactly these switches do on an EFIS panel...... I'd appreciate it. I think the panel in question is from a 777.....but not sure.

Thanks.

best,

..........john

Intel i7 960 quad 3.2G LGA 1366, Asus P6X58D Premium, 750W Corsair, 6 gig 1600 DDR3, Spinpoint 1TB 7200 HD, Caviar 500G 7200 HD, GTX275 1280M, Logitec Z640, Win7 Pro 64b, CH Products yoke, pedals + throttle quad, simpit

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Reply #1 - Apr 24^th, 2006 at 7:26pm

Nexus Offline
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VOR/ADF L = Captains radio (either NAV1 or ADF 1)
VOR/ADF R= First Officer's radio (either NAV2 or ADF 2)

In the 737's, those switches are labelled VOR 1 and VOR 2 etc. Which is more logical to me

Simply put you get pointers (narrow for VOR/ADF 1, wide pointers for VOR/ADF 2)

Info in lower corners of the ND (Frequency/station ID and DME)
VOR info = Green
ADF= Cyan.

Remember that each crewmember has an EFIS control panel (I actually think you know this) so basicly it replaces the need for an RDMI

737 ND

747 ND

EDIT: Threw in an Airbus comparison just for fun since they have basicly the same principle

EDIT 2: Rockwell Collins Flightline 4 example.

« Last Edit: Apr 24^th, 2006 at 9:34pm by Nexus »

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Reply #2 - Apr 24^th, 2006 at 8:32pm

SilverFox441 Offline
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I see that the 747 example actually has the VOR tagged as "R" and the ADF tagged as "L" in the info boxes.

It also looks like I had it right...amazing.

Steve (Silver Fox) Daly

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Reply #3 - Apr 24^th, 2006 at 8:45pm

Nexus Offline
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It's how it's supposed to be Silver

ADF L = Captain's tuned ADF
VOR R = F/O's tuned VHF NAV receiver.

But like I posted above the 737's have the VOR/ADFs tagged as "1" and "2" respectively. Which makes more sense if you ask me

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Reply #4 - Apr 25^th, 2006 at 8:40am

JBaymore Offline
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THANKS! Nexus and Silverfox.

That is the kind of info I was looking for. (....info for which I was looking. Wink

)

Let me see if I understand this........

On the Captain's EFIS control panel (one of two panels) there is a "L" switch that controls what shows on the Captain's display as to what Nav 1 and ADF 1 are tuned to. Can I assume then that the "off" position shows nothing?

On the Boeing MFD this is displayed on the lower left of the screen and the appropriate pointers appear on the Arc / Rose display.

The other "L" switch does basically the same thing but shows what NAV 2 and ADF 2 are tuned to.

So these switches solely affect what is displayed on the MFD........ and take no other active "control" function.

Is this all correct?

Or...... do these switches also,at the same time, act like activating the NAV function on the autopilot and engaging the autopilot? In other words, so when the "L" switch is "off" you are manuallly flying the plane, but when the "L" switch is set to VOR....... the plane is tracking that VOR (or ADF respectively)?

I am guessing that the latter is not the case, since then if BOTH switches were "on" and set "L" = VOR and "R"=ADF........ then the plane would not know WHERE to go Wink

.

Sorry I am so dense about this one.

best,

.......................john

Intel i7 960 quad 3.2G LGA 1366, Asus P6X58D Premium, 750W Corsair, 6 gig 1600 DDR3, Spinpoint 1TB 7200 HD, Caviar 500G 7200 HD, GTX275 1280M, Logitec Z640, Win7 Pro 64b, CH Products yoke, pedals + throttle quad, simpit

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Reply #5 - Apr 25^th, 2006 at 5:36pm

Nexus Offline
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John, the buttions on the EFIS control panel has nothing to do with VOr tracking etc, they have no control of aircraft navigation or tuned NAV radios.
They are simply a visual guidance tool that the crew can select to see or not

You said it yourself, they only affect what is displayed on the ND.

If you have both buttons in "OFF" mode, the respective NAV radios are still tuned and funcitoning.

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Reply #6 - Apr 25^th, 2006 at 7:39pm

JBaymore Offline
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Thanks Nexus.

Now I have to figure out how to emulate that between FSUIPC and FreeFD. Hopefully it is possible.

best,

....................john

Intel i7 960 quad 3.2G LGA 1366, Asus P6X58D Premium, 750W Corsair, 6 gig 1600 DDR3, Spinpoint 1TB 7200 HD, Caviar 500G 7200 HD, GTX275 1280M, Logitec Z640, Win7 Pro 64b, CH Products yoke, pedals + throttle quad, simpit

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