I know I ask a lot but....Landing question again...

[TylerTheHottie]

Hey yall Im sure Ive earned the reputation as the village idiot on here in these forums and you know what? Im ok with that. I do have another question pertaining to landing once again though. I was just wondering what the point of putting in the TACN frequency to find out the direction of the landing strip if I can so conveniently get it by just inputting the CDU divert to get the automatic waypoint of the landing site?

[alfredo_laredo]

In case of CDU failure, as a backup.

Also a tacan alows you to perform non-precision approaches, It will give you lateral guidance for landing in Instrument Flight Conditions. excelent when no ILS is aviable.

 

Do you need to use it when CDU is aviable?

Well.. not really, but its good practice to have it ON and set. Or at least to know how to use it.

 

In real life, we dont really use VOR/TACAN anymore, with the GPS, but we always use it as a backup system

Edited November 17, 2015 by alfredo_laredo

[baltic_dragon]

It can also be useful in other situations, like arcing the TACAN station and finding your wingmen if you are separated and you don't have the SADL working. I agree you would use it mainly as a backup system, but it has its applications.

[Puma]

Hehe, I only use tcn... But Im old. Does cdu divert give you course deviation on hsi?

[TylerTheHottie]

In case of CDU failure, as a backup.

Also a tacan alows you to perform non-precision approaches, It will give you lateral guidance for landing in Instrument Flight Conditions. excelent when no ILS is aviable.

 

Do you need to use it when CDU is aviable?

Well.. not really, but its good practice to have it ON and set. Or at least to know how to use it.

 

In real life, we dont really use VOR/TACAN anymore, with the GPS, but we always use it as a backup system

 

You said "we" in reference to real life, are you a pilot? :D

[Pikey]

Not all aircraft have an A-10C CDU. Thats the basic reason. More the question why does it have a TACAN reciever, in which case its a design question i can only assume at but you couldnt go far wrong with thinking that having backup communication and navigation devices is a fairly sound principle in design.

[alfredo_laredo]

Hehe, I only use tcn... But Im old. Does cdu divert give you course deviation on hsi?

 

No, CDU doesnt Give you course deviation, or at least as easy as a Tacan does.

CDU will give you Course deviation between 2 Waypoint in a route.

 

You can create a Long Route with several waypoints and you will get course deviation.

 

But if you need to change the route you would have to create a new route in the CDU, this takes time and attention, its much more easier to just change to a TACAN and move the course bug in the HSI.

 

For example, to get course deviation for a final approach you would need to create a new route in the CDU, with one waypoint in the middle of the runway and another lets say 10nm from it in the heading of the Runway or any other distance you like.

 

But this is time consuming and much more simplier to set TCN freq and move the Course in the HSI to runway heading.

 

I also like to keep my TCN set and ready

 

You said "we" in reference to real life, are you a pilot? :D

 

yes, but civilian =)

[Mike77]

It can also be useful in other situations, like arcing the TACAN station and finding your wingmen if you are separated and you don't have the SADL working.

 

 

Would you please explain that, or point me in the right direction to learn about it. Sounds very interesting!

 

Thanks in advance,

 

Mike

 

 

 

Sent from my iPhone using Tapatalk. System specs: Windows 7 Pro, EVGA X58 3x classified 3 MOBO, i7 960 @3.2Ghz, 24Gb Ram, Nvidia EVGA GTX 780ti with 3 Gb VRAM.

[Puma]

Tacan arcing is flying a circle around something. Usually an airport. Imaging wanting to land on a runway running east to west (rwy 27). But you are approaching from the south. Tacan arcing says fly straight at he tcn beacon until dme indicates you are 10 miles away. Then turn right until the tcn bearing needle is at your 9 oclock position. Keep it there and you are now flying ccw on the 10 mile arc around the beacon. Once that needle is at 270 degrees, you are prepared to turn to approach at rwy 27. There are some great youtube videos on the subject and a picture is worth a thousand words.

[NeilWillis]

To answer the rest of Mike's question - SADL (Situational Awareness Data Link) is the system used to communicate with your wingman and display his location on your TAD (Tactical Awareness Display). Just look at it as Facebook for pilots but without the kittens.

 

There is an excellent multiplayer SADL guide floating around somewhere but right now I can't find it, sorry.

[GurbY]

To answer the rest of Mike's question - SADL (Situational Awareness Data Link) is the system used to communicate with your wingman and display his location on your TAD (Tactical Awareness Display). Just look at it as Facebook for pilots but without the kittens.

 

There is an excellent multiplayer SADL guide floating around somewhere but right now I can't find it, sorry.

FTFY!

http://forums.eagle.ru/attachment.php?attachmentid=53165&d=1309362948

[NeilWillis]

That's the one Gurby, thanks!

[baltic_dragon]

Would you please explain that, or point me in the right direction to learn about it. Sounds very interesting!

 

First take what Puma said:

 

Tacan arcing is flying a circle around something. Usually an airport. Imaging wanting to land on a runway running east to west (rwy 27). But you are approaching from the south. Tacan arcing says fly straight at he tcn beacon until dme indicates you are 10 miles away. Then turn right until the tcn bearing needle is at your 9 oclock position. Keep it there and you are now flying ccw on the 10 mile arc around the beacon. Once that needle is at 270 degrees, you are prepared to turn to approach at rwy 27. There are some great youtube videos on the subject and a picture is worth a thousand words.

 

Then use it in the following manner:

 

You can't see your wingman on your TAD, but you have radio comms. So you basically set up a randezvous point using a TACAN radial and distance. So first you choose an airport, tune in to its tacan station, and then you set a meeting point, for instance inbound radial 270 and distance 20 miles. So you position yourself exactly to the west from the tacan station and anchor 20 miles away from it. It sounds very simple, but takes some time to get used to it.

[WildBillKelsoe]

A-10 systems are built to for redundancy.. Like fun with Dick and Jane (they did get home afterall). If you see how components are interlinked with each system, you'll understand why many radios are used. Combat damage is something but not getting home is another thing. I advise you to read OAF, specially Haun's account when he got a MANPAD on his left engine and crawled back on one engine to Macedonia. This practically happens to all of us (new AND experienced).

[TylerTheHottie]

No, CDU doesnt Give you course deviation, or at least as easy as a Tacan does.

CDU will give you Course deviation between 2 Waypoint in a route.

 

You can create a Long Route with several waypoints and you will get course deviation.

 

But if you need to change the route you would have to create a new route in the CDU, this takes time and attention, its much more easier to just change to a TACAN and move the course bug in the HSI.

 

For example, to get course deviation for a final approach you would need to create a new route in the CDU, with one waypoint in the middle of the runway and another lets say 10nm from it in the heading of the Runway or any other distance you like.

 

But this is time consuming and much more simplier to set TCN freq and move the Course in the HSI to runway heading.

 

I also like to keep my TCN set and ready

 

 

 

yes, but civilian =)

 

its interesting you mention the course deviation. in the tutorial provided by the developers all they did for that was call in to the tower and get the heading they needed and they measured 10 miles till they had a visual of the airstrip which they then turned and used ils to land. they didnt demonstrate the use of the tacn. now they werent wrong were they? im assuming there are basically a few ways one can go about doing this pretty much?

[Mike77]

Thank you to all who replied to my question. Rep has been submitted :)

 

I'm really impressed with DCS World and the folks here on the forums too. It's so helpful to get input from people in the know. What a valuable resource for a new guy like me. I often bookmark threads that are way over my head now, and will revisit them when I've learned enough to put it to use. Good stuff.

 

Also, to the OP, Tyler. I appreciate that you ask the questions you do. I read through the forums and quite often find threads that are right on target for things I need to learn. Helps me out a lot.

 

Thanks again!

 

Mike

 

 

Sent from my iPhone using Tapatalk. System specs: Windows 7 Pro, EVGA X58 3x classified 3 MOBO, i7 960 @3.2Ghz, 24Gb Ram, Nvidia EVGA GTX 780ti with 3 Gb VRAM.

[BSS_Sniper]

In case of CDU failure, as a backup.

Also a tacan alows you to perform non-precision approaches, It will give you lateral guidance for landing in Instrument Flight Conditions. excelent when no ILS is aviable.

 

Do you need to use it when CDU is aviable?

Well.. not really, but its good practice to have it ON and set. Or at least to know how to use it.

 

In real life, we dont really use VOR/TACAN anymore, with the GPS, but we always use it as a backup system

 

Who's we? Pretty much every place I know of mandates that you use all available for navigation, especially for approaches. There's always a backup dialed in if its available.

[Zimmerdylan]

Hey yall Im sure Ive earned the reputation as the village idiot on here in these forums and you know what? Im ok with that. I do have another question pertaining to landing once again though. I was just wondering what the point of putting in the TACN frequency to find out the direction of the landing strip if I can so conveniently get it by just inputting the CDU divert to get the automatic waypoint of the landing site?

 

 

LOL....There's no such thing as a village idiot here. :music_whistling:

[alfredo_laredo]

Who's we? Pretty much every place I know of mandates that you use all available for navigation, especially for approaches. There's always a backup dialed in if its available.

 

 

Sorry not saying we dont use it. Im saying its not the primary source of navigation anymore. But nav radios are always set.

 

 

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