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General Category => Unofficial F/A-18 Acceleration Pack board => Topic started by: virtuali on October 27, 2007, 03:16:11 pm

Title: Autopilot and Radio explainations
Post by: virtuali on October 27, 2007, 03:16:11 pm
The Up Front Control Panel (UFC) of the F/A-18 could be quite difficult to grasp, because it deviates from a civilian A/P quite a bit.

COM Mode
The first thing to be noted is the UFC has basically two "levels" of operation. The "top" level is the COM mode. This is the mode the UFC is in by default, you know you are in this mode, because the indications will read:

GRCV
SQCH
CPHR
AM
MENU

This mode is simplified compared to the real one, since we don't obviously have the capability to encrypt ATC communications in FSX...So, the options about the Cypher or the frequency band will "act" like the real one, but will not have any impact on operation.

The most important controls in COM radios are the two channel selectors under the "1" and "2" Windows. These will control COM1 and COM2, respectively. Here we have another difference between real world F/A-18 and FSX. In the real one, those selectors can be rotated or pulled. Rotating the controls would select from a preset memory of 1 to 20 COM channels, while pulling would go into "Manual" mode, allowing for a direct COM frequency selection.

We have only implemented the Manual mode so, to select a COM frequency directly, pull the selector and the corresponding radio will go in Manual mode, showing an "M" in its Window, and the current COM frequency in the UFC Scratchpad.

Now, the COM radio is ready to accept input from the keypad. The input system is smart enough to allow to use shortcuts so, for example:

to select 128.375, dial 1-2-8-3-7-5-ENT on the keypad
to select 128.35, dial 1-2-8-3-5-ENT
to select 128.3, dial 1-2-8-3-ENT
to select 128.00, dial 1-2-8-ENT

Illegal input will be flagged with an "Error" flashing message, and you can correct an input by pressing the CLR button.

By using the two "VOL COMM1" and "VOL COMM2" knobs, you can select which COM you are transmitting to. The active COM is signaled by the "ON" indication on the UFC Scratchpad, when the frequency is displayed. Pulling again the Channel selector knobs, will return to normal operation.

Now, let's talk about the other modes, starting with the A/P. It's important to note that, apart for the "top" COM Mode, ALL the other modes are like sub-menus of the main COM mode. You "enter" a mode pressing the relevant mode key, and you "exit" from it, by pressing the same button again, thus returning to the top-level COM mode.

A/P Mode - Autopilot

Pressing the A/P button will enter into Autopilot mode. The Panel will now show:

ATTH
HSEL
BALT
RALT
CPL

It's important to note that, opposite to any civilian A/P, the F/A-18 A/P has been designed for speed of operation, not safety or passengers comfort. This means, there's no "preselection" of modes: when an A/P mode is selected, it will immediately engage and it will also turn on the A/P, if not already engaged. Of course, you can always manually turn on/off the A/P, by using the ON/OFF button when in Autopilot Mode.

To better learn autopilot modes, I suggest putting the left MFD screen on the ACL page, so you will be able to see all the Autopilot Annunciators, and the right MFD screen on HSI mode (should be default). To do this, press "MENU" on the left MFD, then press "ACL". On the right, press "MENU", then "HSI"

ATTH - is the Attitude Hold mode.

HSEL - Heading Select. It will mantain the Heading selected with the HDG selection bug. The HDG and CRS selection bugs are just under the Fuel selector. You can check the current selected heading on the HSI under the HSEL readout, and there's a bug displayed on the HSI as well. Note also, on the HSI, a "CPL HDG" readout will appear close to the airplane symbol.

BALT - Barometric Altitude Hold mode. This will set Altitude Hold mode at the CURRENT Altitude. There's no way to manually pre select a different altitude, Altitude mode here will always lock at your current altitude.

RALT - Radard Altitude Hold Mode. Not implemented

CPL - Coupled mode. This mode is a generic way to name all modes that are Coupled to something like a TACAN, and ILS or a WAYPOINT. What you are coupled to, depends on the mode that has been selected on the HSI screen. To change Coupling mode, select either "TCN", "ILS" or "WPT" on the HSI, to toggle between modes. NOTE: Of course, to use WPT mode, you first have to create a flight plan! Without a flight plan, the only modes available for coupling will be TCN and ILS.

Note the "CPL TCN" or "CPL ILS" on the airplane symbol. To select a Steering Course towards the station, use the CRS bug, and check the small "CSEL" readout on the HSI. By pressing the "CSEL" button on the HSI, instead, you can toggle on/off the visualization of the CRS indication for the HSI.

Pressing A/P button again, will exit from the Autopilot mode.

Title: Re: Autopilot and Radio explainations
Post by: seaviper on October 28, 2007, 10:53:38 pm
Thanks for clarifying what should have been in a microsoft PDF or kneeboard page. That Hornet is OUTSTANDING!

Title: Re: Autopilot and Radio explainations
Post by: mrwatty on November 19, 2007, 07:48:51 pm
Selecting the Altitude Bug (CTRL+SHIFT+Z) and then Increase or Decrease Selection seems to work for manually tweaking the A/P Altitude. It also works via the MFD on the Saitek X52.
Title: Re: Autopilot and Radio explainations
Post by: Intrepid on November 20, 2007, 02:07:06 am
Mrwatty; hi could you please elaborate a little more on "It also works via the MFD
on the Saitek X-52" Thats the control system I have, and you have lost me there. ::)
Thanks
Randy                                             
Title: Re: Autopilot and Radio explainations
Post by: mrwatty on November 25, 2007, 11:21:25 pm
Sorry...got carried away with the old acronyms there  :). By MFD I meant the multifunction display on the x52 throttle unit. When you run FSX the display should show a page with COM1 NAV1 etc.
I have the X52 Pro and the with the beta drivers this is automatically done (http://www.saitek.com/uk/down/drivers2.asp), not sure about the X52 non-pro (they are a completely different unit as far as profiles and drivers!!!).

Anyway, assuming you do have the information on the display, the way to get to the autopilot settings is to scroll the left hand black wheel below the display (Pg.up and down) until you see a page showing something like ALT 00000 and VS 00000, to the right of the display by the ALT 00000 there is a small <, push the right hand black wheel to change the cursor to << then you can scroll the wheel up and down to change the autopilot altitude, finally push the right hand wheel again to enter it.

Hope this makes sense, give me a shout if I'm not.
Title: Re: Autopilot and Radio explainations
Post by: BlakTiger47 on November 29, 2007, 03:33:04 pm
Hi mrwatty. about manually selecting the altitude bug. how do u increase or decrease it once u have selected it. i've been trying to map the increase and decrease buttons to my joystick buttons but i cant seem to find what its listed as.
Thanks
Title: Re: Autopilot and Radio explainations
Post by: mrwatty on December 02, 2007, 07:55:51 pm
The Toggle buttons on the Throttle unit (T1,T2,T3) work really well for me for the autpilot stuff. I did it by mapping the T1 toggle button to = (increase selection) on the up button and - (decrease selection) on the down button. I also mapped T3 down button to CTRL+SHIFT+H (heading bug select) and T3 up to CTRL+SHIFT+Z (altitude bug select). Then you can just select either the heading or altitude bugs on T3 and use T1 to alter the value. I use T2 up and down mapped to the GPS zoom in and out.
Title: Re: Autopilot and Radio explainations
Post by: BlakTiger47 on December 02, 2007, 11:37:39 pm
So what are the increase altitude and decrease altitude buttons listed as in the Controls> Buttons list?
Title: Re: Autopilot and Radio explainations
Post by: Intrepid on December 03, 2007, 11:03:36 pm
Sorry...got carried away with the old acronyms there  :). By MFD I meant the multifunction display on the x52 throttle unit. When you run FSX the display should show a page with COM1 NAV1 etc.
I have the X52 Pro and the with the beta drivers this is automatically done (http://www.saitek.com/uk/down/drivers2.asp), not sure about the X52 non-pro (they are a completely different unit as far as profiles and drivers!!!).

Anyway, assuming you do have the information on the display, the way to get to the autopilot settings is to scroll the left hand black wheel below the display (Pg.up and down) until you see a page showing something like ALT 00000 and VS 00000, to the right of the display by the ALT 00000 there is a small <, push the right hand black wheel to change the cursor to << then you can scroll the wheel up and down to change the autopilot altitude, finally push the right hand wheel again to enter it.

Hope this makes sense, give me a shout if I'm not.
Thanks for the info  8) unfortunatly  "for me " I have the X-52 non-pro and apparently there is  no way to change the display  on the throttle to match the  X-52 pro :'(
Randy
Title: Re: Autopilot and Radio explainations
Post by: Flags on January 04, 2008, 03:17:46 am
So, I read, and am able to use, the COM features, but haven't figured out how to dial in NAV freq, yet.  In other words, if I want to dial in an ILS freq, so that I may shoot that approach, how is it done? 
Title: Re: Autopilot and Radio explainations
Post by: virtuali on January 04, 2008, 01:11:48 pm
In other words, if I want to dial in an ILS freq, so that I may shoot that approach, how is it done?

You need to be in ILS or TCN mode before dialing, and you can set a frequency either by dialing the frequency directly (just like the com radio) or by selecting a channel.
Title: Re: Autopilot and Radio explainations
Post by: Yxin on January 06, 2008, 02:00:05 pm
Sorry for bumping this thread, but i still dont get it.
When i go to tacan mode, and dial in the freq. to a nearby VOR, nothing happens.
When i start a flight, navs default is 113.70, and that one shows up on the HSI. When i go to tacan mode, there are : before T/R and X. When i clear it, and set i.e 113.85, wich is a close VOR, the : before the X switches to Y, and refuses to go back to X, and nothing more happens. Same thing in ILS mode. Nothing happens.
And how on earth do you adjust the heading bug?

I thought i had a fairly good grasp on these things, but now im really at a loss.

Would be grateful for any help.

OBTW: Beacon and coms work just fine.

EDIT: found the heading and course buttons "blush". But still not able to get any VORs in.
Title: Re: Autopilot and Radio explainations
Post by: fael097 on January 20, 2008, 05:04:22 pm
hey virtuali, on the other thread http://www.fsdreamteam.com/forum/index.php?topic=310.0 you said that you'd need a not implemented mechanism to make RALT work right.
well, i guess i misunderstood how the RALT is supposed to work, when you said "There's no way to manually pre select a different altitude" i thought you couldnt do that because thats what RALT would do, and it is not working, but i guess i was wrong. so i was wondering if you could please write a brief explanation of how would RALT work please
thanks much.

ps.: i thought this thread would be more appropriate to this question
Title: Re: Autopilot and Radio explainations
Post by: virtuali on January 20, 2008, 05:09:51 pm
RALT is simply Autopilot keeping a constant altitude based on Radar-Altitude, comparing to the standard FS AP Altitude mode, that always locks on Barometric Altitude (BALT).

In both cases, there's no altitude preselection, it's just that BALT is depending on the Barometric readout (hence, it only changes with changing of pressure), were RALT keeps changing to chase the terrain elevation, keeping the airplane at a constant distance from ground. RALT, of course, is not simulated, for the said reason we can't read ground altitude in advance, but only just below the airplane, when it would be to late to correct, especially at high speed.

Title: Re: Autopilot and Radio explainations
Post by: fael097 on January 20, 2008, 05:14:39 pm
ahhh now i got it
thanks

that reminds me one of the f-22 games, when u press L and it keeps you heading foward, and avoiding the mountains automatically (keeping you at some distance from the ground, in that case, the mountains) lol
Title: Re: Autopilot and Radio explainations
Post by: SUBS17 on January 21, 2008, 11:36:32 pm
Terrain following mode (TFR)
Title: Re: Autopilot and Radio explainations
Post by: Cynide on February 16, 2008, 03:42:41 am
I have an interesting development to discuss... I also had the problem with the nav and ILS frequencies not working

in the hornet cockpit. dial them in, in this case 111.30 for the KNEW localizer...and nothing.

So, after setting NAV 1 in the hornetI went ahead and changed the plane in mid-flight to another bird, the C-172,
because I knew from experience that whatever avionics you set in one plane, would follow to whatever plane you load in next. I knew how to work the 172 localizer, so i could do a base comparison...

my NAV1 read 111.29!!!

I did this a few times, and the same result every time...the scratchpad would show 111.30, but it was actually doing 111.29, and thus no needles, no VOR, nothing...

Interestly enough, the comms, IFF , bcn, etc.work perfectly!

If I go to the 172 and set in 111.30, and then switch to the hornet, I have needles!

Could someone give me an idea what they think might be going on here?
Yxin, try this and see what happens for you..
Title: Re: Autopilot and Radio explainations
Post by: twominuteturn on May 06, 2008, 07:24:10 pm
I still don't uderstand how to activate a/p. do you select ap mode THEN click on/off, or visa versa. Because mine doe not want to cooperate.
Title: Re: Autopilot and Radio explainations
Post by: twominuteturn on May 06, 2008, 07:29:04 pm
I still don't uderstand how to activate a/p. do you select ap mode THEN click on/off, or visa versa. Because mine doe not want to cooperate.
And one more thing, on the ACL page, what does "NOT CMD A/S 0" or "NOT CMD ALT 17388" and finally "NOT CMD V/S (+/-) 1800" mean? airspeed, alt,vertical speed? how so you change those?
Title: Re: Autopilot and Radio explainations
Post by: virtuali on May 06, 2008, 08:34:04 pm
I still don't uderstand how to activate a/p. do you select ap mode THEN click on/off, or visa versa.

This was explained in the first post:

Quote
there's no "preselection" of modes: when an A/P mode is selected, it will immediately engage and it will also turn on the A/P, if not already engaged
Title: Re: Autopilot and Radio explainations
Post by: virtuali on May 06, 2008, 08:37:25 pm
And one more thing, on the ACL page, what does "NOT CMD A/S 0" or "NOT CMD ALT 17388" and finally "NOT CMD V/S (+/-) 1800" mean? airspeed, alt,vertical speed?

"NOT CMD" means the A/P is off because you first turned on a mode (thus, turning on A/P at the same time, see previous message) then you pressed the AP on/off button, turning it off again.

Quote
how so you change those?

With the standard key commands. The default behavior for altitude, for example, is to capture the current alt when the mode was engaged. But it can be changed with the keyboard commands, that are still operational.
Title: Re: Autopilot and Radio explainations
Post by: italyflight on May 20, 2008, 05:57:02 pm
How do you use ILS in f-18?
Title: Re: Autopilot and Radio explainations
Post by: italyflight on June 04, 2008, 08:56:29 pm
how do you use ils in f-18 and where's the NAV radio? I found only the COM 1 and 2. ??? ??? ???
Title: Re: Autopilot and Radio explainations
Post by: virtuali on June 04, 2008, 09:05:19 pm
NAV frequencies and ILS are explained in the first post of this thread.
Title: Re: Autopilot and Radio explainations
Post by: Bullseye on June 19, 2008, 04:46:58 pm
Just a quick question: Can you make the F-18 follow ILS and let the AP land?

Grtz Elias
Title: Re: Autopilot and Radio explainations
Post by: virtuali on June 19, 2008, 05:57:12 pm
You could (just use the standard hot-keys for the APP mode) but it hasn't been designed or tested to do it. We are using the standard A/P code in FSX, which I'm not sure is able to cope with the specific approach beaviors of a jet fighter, perhaps it will work in good weather on a real runway, but probably not in bad weather and certainly not on a carrier.
Title: Re: Autopilot and Radio explainations
Post by: crash on June 21, 2008, 01:44:47 am
 8)
Can you assist with Tacan procedures. I can navigate using Vortac by enterring the channel and the HSI needle points to the station just like a RMI with a vor, but when I tune a tacan like nkx at miramar the station id comes up with dme range but the needle always points north south, the same with other pure tacan stations like north island. Am I doing something wrong or do the tacans not have the radials set in the program.

Title: Re: Autopilot and Radio explainations
Post by: virtuali on June 21, 2008, 01:54:09 am
The TACAN function for the Acceleration F/A-18 is not a complete simulation of the Tacan system, that (when used on a military airplane) allows for radial informations. The Tacan system we have is just a convenience that will allow to tune "by channel" instead of "by frequency", but the underlining system is still the standard FSX so, it assumes all airplanes use a civilian receiver so, TACAN works as DME only, without radials.
Title: Re: Autopilot and Radio explainations
Post by: chatnyurur on July 22, 2008, 08:47:15 pm
Hi everyone. I was wondering how can i set the altitude value?
Title: Re: Autopilot and Radio explainations
Post by: virtuali on July 22, 2008, 09:29:43 pm
It has just been explained, a couple of messages above, at Reply #20
Title: Re: Autopilot and Radio explainations
Post by: Gunfighterj on August 18, 2008, 04:39:41 pm
First Can any1 tell me what TACAN is? And second is there a way that u can set up an intercept course on another flying aircraft?
Title: Re: Autopilot and Radio explainations
Post by: Razgriz on August 31, 2008, 03:48:50 am
Not unless they had a VOR out of them, or a non-moving target.. :o
Title: Re: Autopilot and Radio explainations
Post by: Razgriz on September 06, 2008, 02:50:14 am
I still don't get how to set my NAV radio.  I went into my ILS page on the pad, set my MFD to ILS, typed in my code but no needles.  Can we get a picture or some easier instructions??

Edit:

My NAV1 radio, if I type in 1-0-9-3, it goes to 109.29.. :S

I tried 1-0-9-3-1 and it goes to 109.34...
Title: Re: Autopilot and Radio explainations
Post by: virtuali on September 06, 2008, 01:33:44 pm
I don't know what to say: I can't reproduce it, just tried it now, and 1-0-9-3 then ENT key, results in the 30X channels tuned, which is 109,30, and switching to the C172, confirms the NAV radio is tuned to 109,30.
Title: Re: Autopilot and Radio explainations
Post by: brettt777 on December 28, 2008, 02:22:44 am
You could (just use the standard hot-keys for the APP mode) but it hasn't been designed or tested to do it. We are using the standard A/P code in FSX, which I'm not sure is able to cope with the specific approach beaviors of a jet fighter, perhaps it will work in good weather on a real runway, but probably not in bad weather and certainly not on a carrier.

I remember back in my Nav Air days we actualy did have a so-called "hands off" landing on the carriers. It was the ILS/ACLS system tied to the AP and it also had an APC (automatic power compensator) that adjusted the throttle so it was a true hands off carrier landing if the pilot hand the cahonas to do it.
Title: Re: Autopilot and Radio explainations
Post by: brettt777 on December 28, 2008, 02:24:25 am
The TACAN function for the Acceleration F/A-18 is not a complete simulation of the Tacan system, that (when used on a military airplane) allows for radial informations. The Tacan system we have is just a convenience that will allow to tune "by channel" instead of "by frequency", but the underlining system is still the standard FSX so, it assumes all airplanes use a civilian receiver so, TACAN works as DME only, without radials.

That would explain why I would get Tacan distance on the HUD but no radial info...
Title: Re: Autopilot and Radio explainations
Post by: brettt777 on December 28, 2008, 02:27:40 am
This thing has quite the avionics package. Now if we only had target tracking info on the HUD...
Title: Re: Autopilot and Radio explainations
Post by: brettt777 on December 28, 2008, 06:00:28 am
First Can any1 tell me what TACAN is? And second is there a way that u can set up an intercept course on another flying aircraft?

TACAN is an acronym for TACtical Air NAVigation. I was familiar with it back in my Nav Air days but that was 20 years ago. If I remember right (guys, help me out here, it's been a long time so feel free to correct me if I'm talking out my back side), it is primarily a military thing. I don't think you'd see one in a GA or commercial plane but I could be wrong about that. What it is is a transmitter/receiver in the aircraft and a transmitter/receiver at the ground station. Again if I remember correctly the ground station transmits various pulses in a certain pattern (I don't have the time or the room to draw a picture of how it does it...it is a bit complicated if memory serves) and depending on what direction the aircraft is from the radiated pattern and compared to a reference burst it receives it and displays it, usualy on an HSI. Unlike VOR where the HSI displays intercept info to a certain radial, TACAN shows direct heading to the station. Like I said there is a transmitter in the aircraft that is used for getting DME info from the station also. The system I worked with also had a way to connect with another aircraft and you could get slant range to that aircraft. I don't recall if you could get bearing info as well. Unfortunately in the Accel Pack FA-18, as virtuali said, the only TACAN function we have is the DME. I hope I didn't confuse you too much. It has been a long time. As for the second question, someone else has to answer that one...
Title: Re: Autopilot and Radio explainations
Post by: dancd on January 13, 2009, 09:10:31 pm
This thread will help me considerably in respect of the subject heading. Could you add one further line please to indicate how I fire up the HUD. Many thanks
Title: Re: Autopilot and Radio explainations
Post by: Tregarth on March 14, 2009, 09:46:30 pm
I am sorry to be stupid but I cannot make the F-18 radios tune to the ILS on Radio 1 and VOR on Radio 2.

I thought the sequence was

1. Click on the right button below M so it changes to 2
2. Click the TCN button (it shows as VOR page)
3. Enter VOR Frequency  11495 ENTER

But nothing seems to appear on the DDI.

Where am I going wrong, please
Title: Re: Autopilot and Radio explainations
Post by: PVI_Eagle on April 21, 2009, 08:52:36 pm
I still don't get how to set my NAV radio.  I went into my ILS page on the pad, set my MFD to ILS, typed in my code but no needles.  Can we get a picture or some easier instructions??

Edit:

My NAV1 radio, if I type in 1-0-9-3, it goes to 109.29.. :S

I tried 1-0-9-3-1 and it goes to 109.34...

I have the same problem...........

PVI_Eagle
Title: Re: Autopilot and Radio explainations
Post by: Pop on September 27, 2009, 04:16:35 pm
may have missed it, but see my post on "tacan" below. Any ideas??? POP
Title: Re: Autopilot and Radio explainations
Post by: Pop on October 13, 2009, 01:34:25 pm
To get the "needles" on the MFD u must select "CSEL" on the MFD. Then below the "bingo" switch (just above left knee) -2 switchs cus and hdg. they will allow uto set the heading bug and the cus line!
Title: Re: Autopilot and Radio explainations
Post by: neutrino on October 19, 2009, 11:32:36 am
The FSX Hornet has only one NAV radio, so you can select only one frequency at any one time and depending on the station you are receiving from you can be in either VOR or ILS mode.

But my question is - does the real Hornet has only one NAV radio, because I've seen on its HUD both ILS needles and steering arrow and dots?
Title: saved mission prob
Post by: Pop on October 25, 2009, 03:18:41 pm
Strange problem! I have several missions with the F18 “saved”. When I load some of the missions the A/C come in with the AutoThrottle on, which make the a/c scoot across the landscape till I can get the brake on and turn it off. Other missions are OK.
Have ensured the AT is off and “resaved” the mission, but to no avail? Suggestions?
 ???
Title: Re: saved mission prob
Post by: neutrino on October 25, 2009, 06:40:41 pm
Strange problem! I have several missions with the F18 “saved”. When I load some of the missions the A/C come in with the AutoThrottle on, which make the a/c scoot across the landscape till I can get the brake on and turn it off. Other missions are OK.
Have ensured the AT is off and “resaved” the mission, but to no avail? Suggestions?
 ???
What do you mean by "autothrottle" ? I thought the FSX FA-18 does not have autothrottle, only autopilot, which works as explained in the first post of the thread.
Title: Re: Autopilot and Radio explainations
Post by: Pop on October 25, 2009, 07:30:04 pm
on the front of the inboard throttle is a button (hard to see) but hover over that area an u can see it.  If u "arm" the AT, then "engauge AT" the hit the CTL R key you will set the "CDM A/S"(look at the ACL page top left). The AT work well in the CVA approaceds, just remember to (ctl r) disconnect after landiing!
 :)
Title: Re: Autopilot and Radio explainations
Post by: neutrino on October 25, 2009, 11:02:04 pm
Pop, I haven't tried the autothrottle function you describe, but I think the <Ctrl+R> combination simply engages the generic "Airspeed Hold" function of the FSX autopilot. I don't know how it is integrated with the Hornet VC avionics.
Title: Re: Autopilot and Radio explainations
Post by: Sludge on October 26, 2009, 08:18:11 am
Neutrino.... Good question and I cant find the manual to answer that online.

I know what you mean though, look at this video.

Title: Re: Autopilot and Radio explainations
Post by: Pop on October 27, 2009, 03:44:41 pm
neutrino: Correct about the "airspeed hold"! You don't have to use the "arm-engauge" to get a "airspeed hold" however, it works like the "RW" autothrottle! The auto pilot does not have to be on the use it, and "ctl r" turns it on and off! The 'set CDR A/S" is what ever speed your are when ;) "turned on"!

Still looking for what the "auto throttle" button does in the sim-it is there as "workable" ???
Title: Re: Autopilot and Radio explainations
Post by: Razgriz on October 27, 2009, 09:46:03 pm
neutrino: Correct about the "airspeed hold"! You don't have to use the "arm-engauge" to get a "airspeed hold" however, it works like the "RW" autothrottle! The auto pilot does not have to be on the use it, and "ctl r" turns it on and off! The 'set CDR A/S" is what ever speed your are when ;) "turned on"!

Still looking for what the "auto throttle" button does in the sim-it is there as "workable" ???

That pilot does have Airspeed hold on.  He is using ATC (Auto Throttle Control), and the words ATC are readable on the right side of the hud.
Title: Re: Autopilot and Radio explainations
Post by: Tregarth on February 02, 2010, 07:56:49 pm

I have seen reference to using TACAN radios on the F/A-18, in particular Javier Fernadez's USS Nimitz.  In it he says the TACAN frequency is 57X.  I know I have select the TACAN button on the radio and then press 5 and 7, but how do I add the X ?

I have tried pressing the green X on the radio display but that does not seem to work, what do I need to do please?

Thank you,

Tregarth
Title: Re: Autopilot and Radio explainations
Post by: Pop on February 03, 2010, 02:40:02 pm
after pressing the button next to the "X" press enter!
Title: Re: Autopilot and Radio explainations
Post by: Orion on February 03, 2010, 06:20:31 pm
I believe it only works if you have the improved HUD by Jivko Rusev (see this thread: http://www.fsdreamteam.com/forum/index.php?topic=2342.0).
Title: Re: Autopilot and Radio explainations
Post by: jkatz098 on April 06, 2010, 01:34:47 am
When i click the X it jumps to the Y and i cannot get it to stay on X
Title: Re: Autopilot and Radio explainations
Post by: Gdex on April 27, 2011, 03:55:39 am
I can’t seem to be able to have both ATTH and either HSEL or NAV on at the same time. For example, if the A/P is on HSEL, and I manually adjust the pitch and throttle to get the climbing rate I want, then when I click on ATTH so that the A/P will maintain the current attitude, HSEL goes off. The same thing happens if I use CPL (to NAV) instead of HSEL. Has anyone run into this problem? Any solution?
Title: Re: Autopilot and Radio explainations
Post by: JANDMBEAR on September 04, 2014, 12:58:41 am
I'm still confused as well. And as I have read the "first post".....I guess I need to read and re-read until I understand it. This is how it seems to me anyway
Title: Re: Autopilot and Radio explainations
Post by: PhantomTweak on February 09, 2016, 08:59:53 pm
Quote
I know I have select the TACAN button on the radio and then press 5 and 7, but how do I add the X ?
There is a problem, sometimes, with the radio system. If you just plug in the TACAN numbers, IE: 57 in this example, the radio system misinterperts it, and set's the wrong freq.
There are two ways to solve it. One is to pause, "Select Aircraft" to the default Cessna 172 or something similar, call up the radio stack, set the freq you want on NAV1 Active, then "Select Aircraft" back to the F/A-18.
The other way, that I always use, is to Select TACAN on the UFC, and punch in the frequency that is equivalent to the TACAN you want. Let us say 115.10, just for an example. Punch the entire freq into the scratchpad, for this example 1-1-5-1-0, then hit Enter. It should then display the proper TACAN number you want, in this case, 57X. Make sure you use the entire freq number or it gets confused, sometimes.
OH! a possible 3rd alternative, I apologize: You can add a pop-up radio panel to the plane's 2D cockpit from a default plane, again like hte C172, just for example. Then you pop it up, set your frequency, say 115.00 for example, in the NAV1 Active portion of it, and it will then display the proper TACAN number, say 57X.

There is an add-on scenery for Coupeville, near Whidby Island, specifically for FCLP practice, that has 2 TACAN frequencies you can switch between just by switching the TACAN from TTX to TTY (TT=TACAN number I don't remember :D ) by pushing the button beside the X or Y on the UFC once the frequency is entered. So you can have either a TACAN only approach using the IFOLS, or an ILS approachusing the ILS Needles on the HUD. If it's set up for ILS on the HUD Control Panel, naturally.

And just so you know, I think, although rarely, that the Nimitz (Numb-Nuts, we used to call it) is 47X, or 114.00. Or maybe 57X, or 115.00. Do you see a pattern here? :D

NOT in TACPAC, btw, just with the Jivko Rusev HUD, Which is awesome, and can be put into any plane. Heck, I put it into a C172 just for fun! And with the moving, or mobile versions of carriers, not the "static" or scenery add-on boats. AICarriers.NET is what I use to make them mobile. There are any number of sailing plans for different carriers, aside from the one default one in the Game.

Moving on to the ATC system: With all of Jimi's add-on birds, at least since the v12.1 and up, the FCS can be set to the autothrottle system using SHFT+R, not CTRL+R. That is (was?) to set the current speed into the old autopilot system, before activating the Speed Hold function with SHFT+R, the Sim used. Jimi (and Mr. Orion!!) have set it up so that if you have the ATC engaged, it will try to maintain a) the current speed, if in UA mode, or b) the proper AOA for the plane's current total weight if in PA mode. It doesn't function with Heading Hold, Alt Hold, or APP Mode set into autopilot. IE: you can have EITHER ATC or the other modes engaged.

BTW: For normal landings, with normal landing weights, whether on a boat or ashore, make sure you set the pitch trim to 8.1 for the correct AOA when in PA mode. Gear down, Flaps 2 (full flaps). When you either change the pitch, or when you first enter PA mode, it will display on the lower right side of the HUD for 5 seconds.

I hope all my babbling helps a little bit...
Have great flights, and great days, all!
Pat☺
Title: Re: Autopilot and Radio explainations
Post by: Orion on February 10, 2016, 10:16:49 pm
Moving on to the ATC system: With all of Jimi's add-on birds, at least since the v12.1 and up, the FCS can be set to the autothrottle system using SHFT+R, not CTRL+R. That is (was?) to set the current speed into the old autopilot system, before activating the Speed Hold function with SHFT+R, the Sim used. Jimi (and Mr. Orion!!) have set it up so that if you have the ATC engaged, it will try to maintain a) the current speed, if in UA mode, or b) the proper AOA for the plane's current total weight if in PA mode. It doesn't function with Heading Hold, Alt Hold, or APP Mode set into autopilot. IE: you can have EITHER ATC or the other modes engaged.

The Shift+R shortcut (or more specifically, the AUTO_THROTTLE_ARM event; if you remap the event your new key mapping will be used) is masked/overridden in the FSXBA Hornet; the default autopilot doesn't even see the event getting triggered anymore.  The automatic throttle control modes (cruise mode and approach mode) in the FSXBA Hornet are independent of up and away and powered approach; see this post (http://www.fsdreamteam.com/forum/index.php/topic,6944.msg94148.html#msg94148) for details.  As of the current FSXBA Hornet 16.1 version, automatic throttle control should remain on regardless of whether the default autopilot is engaged or not.
Title: Re: Autopilot and Radio explainations
Post by: PhantomTweak on February 11, 2016, 01:00:25 am
Ahh! I apologize. I hadn't gotten to the very latest yet. I'm working on the RTWR for the FlightSim team.
Thank you Mr. Orion, sir!
Pat☺