Board index FlightGear Support Flying

Bombardier CRJ700 Family AutoPilot  Topic is solved

Controlling your aircraft, using the autopilot etc.

Bombardier CRJ700 Family AutoPilot  

Postby jestepp65 » Wed Aug 23, 2017 2:45 am

I want to use autopilot to take me to my destination and i would love to learn how to do an ILS landing but i can save that for later. I would like to know how to tern on LNAV like i do in B767 and then click AP and it works. It seems to be a lot different in the CRJ700ER.

Any help is appreciated!
Best Regards,
UA-1056 (Find me in the skies!)
User avatar
jestepp65
 
Posts: 84
Joined: Fri Jun 02, 2017 3:43 am
Location: Poca, West Virginia, United States
Callsign: UA-1056
Version: 2017.2.1
OS: Ubuntu 16.04

Re: Bombardier CRJ700 Family AutoPilot

Postby sp-lcz » Wed Aug 23, 2017 9:08 am

Hi jestepp65,

For LNAV you have to choose NAV source for FMS. Of course I assume that you provided your route. After you push NAV button and it works like LNAV.

For ILS: I assume that you provided runway frequency and course. When you will be on the right way to runway you have to change NAV source for NAV1 - it is localizer. Next, push button approach / ils.

BR
Lukasz
User avatar
sp-lcz
 
Posts: 128
Joined: Mon Jan 30, 2017 1:42 pm
Location: EPWA
Callsign: SP-LCZ
Version: 17.3.1
OS: Windows 8.1

Re: Bombardier CRJ700 Family AutoPilot

Postby jestepp65 » Wed Aug 23, 2017 1:45 pm

So i push the NAV button then push Autopilot. Also, i land myself, i never have done ILS but thanks for letting me know how to do that! :D
Best Regards,
UA-1056 (Find me in the skies!)
User avatar
jestepp65
 
Posts: 84
Joined: Fri Jun 02, 2017 3:43 am
Location: Poca, West Virginia, United States
Callsign: UA-1056
Version: 2017.2.1
OS: Ubuntu 16.04

Re: Bombardier CRJ700 Family AutoPilot

Postby jestepp65 » Wed Aug 23, 2017 2:01 pm

I tried it and it didn't work. I entered my route in the route manager and pressed active. i took off the runway and climbed to high as i thought was good to let AP take over. I pressed AP and it started to take me the wrong direction immediately. What am i doing wrong?
Best Regards,
UA-1056 (Find me in the skies!)
User avatar
jestepp65
 
Posts: 84
Joined: Fri Jun 02, 2017 3:43 am
Location: Poca, West Virginia, United States
Callsign: UA-1056
Version: 2017.2.1
OS: Ubuntu 16.04

Re: Bombardier CRJ700 Family AutoPilot

Postby sp-lcz » Wed Aug 23, 2017 9:44 pm

I would like to put here screenshots but actually I am away from my PC. I try to describe as I remember based on F11/F12... of course you can do it the same by a/p 3D panel.

LNAV:
1. Route Manager: filled and active
2. F11 open a/p window
3. Press two or three times NAV SOURCE ... you should see FMS (not NAV1 or NAV2)
4. Press NAV button to activate navigation mode - LNAV is active, after takeoff when you activate AP your plane should fly with defined route.

For ILS:
1. F12 open radio panel
2. For NAV1 put runway frequency and course
3. When you will be on correct way to runway , and correct altitude open F11 AP panel
4. Change NAV SOURCE from FMS to NAV1 - localizer is active
5. By pressing ILS or APPR (I don't remember exactly) on AP panel (F11) your plane should land with ils.

Give me an information if it works for you, if not I will prepare guide with screenshots...

BR
Lukasz
User avatar
sp-lcz
 
Posts: 128
Joined: Mon Jan 30, 2017 1:42 pm
Location: EPWA
Callsign: SP-LCZ
Version: 17.3.1
OS: Windows 8.1

Re: Bombardier CRJ700 Family AutoPilot

Postby jestepp65 » Wed Aug 23, 2017 11:17 pm

Hi,

I am gonna go test it now! I will comment again if it works! Thanks so much for the detailed guide :D that really helped me so much :D :D :D
Best Regards,
UA-1056 (Find me in the skies!)
User avatar
jestepp65
 
Posts: 84
Joined: Fri Jun 02, 2017 3:43 am
Location: Poca, West Virginia, United States
Callsign: UA-1056
Version: 2017.2.1
OS: Ubuntu 16.04

Re: Bombardier CRJ700 Family AutoPilot

Postby jestepp65 » Wed Aug 23, 2017 11:27 pm

Hi,

I have not tried ILS because i would prefer landing myself. But so far the autopilot works well with my root manager settings! I appreciate your specific guidelines, it helped me greatly :D
Best Regards,
UA-1056 (Find me in the skies!)
User avatar
jestepp65
 
Posts: 84
Joined: Fri Jun 02, 2017 3:43 am
Location: Poca, West Virginia, United States
Callsign: UA-1056
Version: 2017.2.1
OS: Ubuntu 16.04

Re: Bombardier CRJ700 Family AutoPilot

Postby sp-lcz » Thu Aug 24, 2017 8:16 am

Great! Happy to hear that!
User avatar
sp-lcz
 
Posts: 128
Joined: Mon Jan 30, 2017 1:42 pm
Location: EPWA
Callsign: SP-LCZ
Version: 17.3.1
OS: Windows 8.1

Re: Bombardier CRJ700 Family AutoPilot

Postby naplesAPF » Tue Dec 06, 2022 2:37 am

trying to use crj's autopilot. things seem to work OK but problem with altitude. when i take off it keeps climbing & climbing & never settles at the altitude I set in the autopilot.
Am using the newest version I assume which i found at https://github.com/d-jsb.
I read earlier there were problems with the autopilot but don't know if they were corrected, or if this was one of the problems.
if any one can help?
naplesAPF
 
Posts: 167
Joined: Sun Jan 04, 2015 9:17 pm

Re: Bombardier CRJ700 Family AutoPilot

Postby SurferTim » Tue Dec 06, 2022 11:33 am

The vanilla version of the CitationX did the same thing. My version will level off at the assigned altitude.
There is a small routine starting at line 297 in this doc.
https://github.com/SurferTim/CitationX/ ... rector.nas

Edit: It basically checks your current altitude compared to your assigned altitude. If less than 100 feet either way, it presses your ALT button for you.
I don't know where you got the aircraft, or how many mods you've made, but the vertical speed is handled here:
CRJ700-family/Systems/CRJ700-autopilot.xml
The vertical mode numbers are explained at line 47
The vertical speed controller starts at line 596.
It should check when the current altitude is a specific value (I used 100 feet) within the assigned altitude. If so, change the vertical mode from 2 to 1.
Code: Select all
<property>controls/autoflight/vert-mode</property>
Fly low. Fly slow. Land on a dime. Twin Otter. https://github.com/SurferTim/dhc6p
My other aircraft is a Citation-X https://github.com/SurferTim/CitationX
PirateAir videos at https://www.youtube.com/user/SurferTim850
User avatar
SurferTim
 
Posts: 1711
Joined: Sun Dec 09, 2018 6:49 pm
Location: Miramar Beach, FL
Callsign: Pirate
Version: 2020.4.0
OS: Ubuntu 18.04

Re: Bombardier CRJ700 Family AutoPilot

Postby naplesAPF » Thu Dec 08, 2022 4:16 pm

Wow this CRJ plane is hard to fly. The autopilot works "sometimes!" I then doesn't. I try to set a route & it almost always Doesn't follow it. I'm using the version from FGMembers.
naplesAPF
 
Posts: 167
Joined: Sun Jan 04, 2015 9:17 pm

Re: Bombardier CRJ700 Family AutoPilot

Postby Octal450 » Sat Dec 10, 2022 4:07 am

You may want to take a hand out of ITAF's book - it computes when to capture altitude by reversing the gain filter that is used in the altitude hold loop.

The result is if the demanded vertical speed to level off from the altitude controller is less than the current vertical speed, then it switches to altitude capture mode.

Kind Regards,
Josh
Skillset: JSBsim Flight Dynamics, Systems, Canvas, Autoflight/Control, Instrumentation, Animations
Aircraft: A320-family, MD-11, MD-80, Contribs in a few others

Octal450's GitHub|Launcher Catalog
|Airbus Dev Discord|Octal450 Hangar Dev Discord
User avatar
Octal450
 
Posts: 5583
Joined: Tue Oct 06, 2015 1:51 pm
Location: Huntsville, AL
Callsign: WTF411
Version: next
OS: Windows 11


Return to Flying

Who is online

Users browsing this forum: No registered users and 4 guests