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 25 Autopilot use - tutorial by Lou (Read 37850 times)
Aeroporc
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Autopilot use - tutorial by Lou
Aug 6th, 2011 at 9:35am
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Hello, how to climb and hold an altitude ?

I don't can clim or descent with Ap, just in manual

Thanks
  
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LOU
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Re: Auto-Pilot
Reply #1 - Aug 9th, 2011 at 2:13am
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Aeroporc,

This information is covered in the manual, but I'll give you a quick look at the 727-100 autopilot.



This is a break down of the areas of the 727-100 autopilot.

From left to right:

Autopilot Mode selector- [ 1 ] allows you to select manual mode which is where the switch is in this picture, or you can select the three radio modes called:

NAV/LOC - this mode will track a VOR radial or the localizer part of the ILS.

AUTO G/S - automatic capture of ILS. You must capture the LOC first and then capture the G/S from below.

MAN G/S - forced capture of the ILS

Next is pitch and roll.- [ 2 ] The knob turns left and right to roll the plane in a turn, and the knob also can pivot up and down to control the pitch of the plane. The roll and pitch is controlled by using the mouse. When you mouse over the control, a hand appears and by pushing the mouse button you can drag the knob left or right to turn the plane. Also, when you place the mouse over the narrow front of the knob and make short taps on the mouse button the pitch will change. This requires very small taps of the mouse button otherwise you will OVER control the pitch and loose control of the plane. You can observe the ADI and watch the pitch change as you make small taps of the mouse button. You can also look for a mouse over message that will show you the pitch change. Place your mouse on the aft or fat part of the knob and make a short tap of the left button (see picture below). This will cause the pitch to increase. The line through the knob shows the pivot point. The double headed arrow line is trying to show that the knob can pivot on that axis. This takes some practice and is some times a royal pain to use, but it was a pain in the real plane as well. The latter autopilot in the 727-200 has a pitch wheel which works much better.

Aileron Paddle - �[ 3 ] engages the aileron channel of the autopilot. You can engage just the aileron channel of the autopilot and control the pitch with the yoke.

Elevator Paddle - �[ 4 ] controls the pitch channel of the autopilot. Will not engage unless the aileron paddle is engaged. Engaging these paddles turns on the autopilot. You can manually pull the paddles off, or hit the yoke disconnect button [Z]. If you pull the ELEV paddle off the AIL channel will stay engaged. If you pull the AIL paddle off the whole autopilot turns off.

ATL HOLD - �[ 5 ] engages the altitude hold part of the autopilot. The autopilot will attempt to hold the altitude at the time the switch is turned on. If you are climbing or descending when you flip the switch the autopilot will go through a few pitch oscillations before it settles down. Try to be level, or at a very small reading on the IVSI before turning on this switch.

HDG SEL - �[ 6 ] only works in manual mode. It follows the heading bug in the Captain's HSI.

HYD Selector - �[ 7 ] allows you to control which hydraulic system the autopilot uses to control pitch. The A-B position is used to supply a redundant source of hydraulic power for an autopilot approach.



I hope this helps. It takes a bit of trial and error to get the results you want. Use the autopilot and play with the various modes until you get a comfort zone.

Lou
  

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Markoz
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Re: Auto-Pilot
Reply #2 - Aug 9th, 2011 at 5:27am
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Lou.

Do you ever use the 2D Autopilot Panel? I always seems to have trouble when trying to use the Pitch up/down (#2 on 2nd Pic). I usually accidentally add left or right banking to it when I'm only wanting to trim the pitch. This is the main reason I use the 2D Autopilot Panel.

Mark
  

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Aeroporc
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Re: Auto-Pilot
Reply #3 - Aug 9th, 2011 at 3:07pm
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Thanks a lot LOU, i try tonight, the Autopilot of the 727 is difficult for a new pilot !



Thanks !
  
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LOU
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Re: Auto-Pilot
Reply #4 - Aug 9th, 2011 at 3:15pm
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Mark,

I only use the 2D autopilot and place it at the top corner of my display - out of the way.

As for using the turn knob, even it the real plane it was a pain to use. Most pilots used heading select to drive the plane around, or hit the little red button on the yoke and hand fly the plane. The 727 was a very nice plane to hand fly, all you needed to do was keep it in trim. In the traffic pattern or on vectors the plane was easy to fly. At cruise speed it was not as much fun since it was too pitch sensitive and you would make the passengers go weeeeeeee! Grin

Lou
  

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Re: Auto-Pilot
Reply #5 - Aug 9th, 2011 at 4:19pm
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Me likes weeeeeeee. Grin
You can always scream 'I'm just following the charts!' to the paying payload then.  Tongue

Great read about the AP, Lou. CS should make that sticky or add it to the KB, or both.
  
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Aeroporc
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Re: Auto-Pilot
Reply #6 - Aug 9th, 2011 at 6:29pm
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Thanks a lot !!!!

Lou, you're Tutorial is very good, i use the AP in 2D only, because in the virtual cokpit is difficult.

Okay, I can fly now !

My biggest wish.

Vincent,
  
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Re: Auto-Pilot
Reply #7 - Aug 10th, 2011 at 3:53pm
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Lou,
Thank you.It is an excellent information.You are a "Good" teacher.
Sanal
  
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Re: Autopilot use - tutorial by Lou
Reply #8 - Nov 1st, 2011 at 3:55pm
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Hi Lou,
I've been away for a time but am enjoying(?) the 'three holer' again.

Have some time as FE with TWA many moons ago and my time (usually on furlough) was limited to 727,707 out of JFK/LGA.

Do have 'Buff' time, over 2000 you know where.

Thanks for the insights.

Jack S.
  
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LOU
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Re: Autopilot use - tutorial by Lou
Reply #9 - Nov 1st, 2011 at 7:15pm
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Jack S.,

Welcome back to the "Pig."

This is a fun airplane to fly and do takeoffs and landings.

Lou TWA- 680503
  

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Re: Autopilot use - tutorial by Lou
Reply #10 - Jan 16th, 2012 at 10:50am
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I need help on the NAV/LOC I put the AP on that mode but I can't see to get it on my route I'm using manual heading just to stay on it (which isn't a big deal but I would like the NAV/LOC to act like a NAV/GPS. haha
  

&&&&&&
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Re: Autopilot use - tutorial by Lou
Reply #11 - Feb 27th, 2012 at 12:18am
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Hi Lou:

And how did you flied Holding patterns? Using the turning knob, the heading select or by hand? If using turning knob how did you proceeded?

Regards.
  

Antonio P&&IVAO 112192&&&&
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Re: Autopilot use - tutorial by Lou
Reply #12 - May 27th, 2012 at 7:03pm
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After no having used the 727-100 for a while.I just attempted a flight.All was well until the controllers of various control tower along the route began to contact me to adjut repeatedly the alt. press. in order to maintain mycrising alt.10.000ft. Using the "B" key only moved the numbers a twitch, so by enlarging and clicking with the mouse I got as close possible...This didn't help either...Only Control kept on contacting me to adjust.Finally; I got fed up and dumpped the flight. Has there been an update/editting on autopilot,lately that I haven't seen?This is my Autopilot section in my Panel.cfg file:
[Window03]
Background_color=0,0,0
size_mm=447,106
position=2
visible=0
ident=10005
gauge00=Captain_Sim.p721.P12!P12_001_ap, 20,0, 427,106
gauge01=Cessna!Nav_GPS_Annunciator, 0,0,20,20
gauge02=Cessna!Nav GPS Switch, 0,20,20,20


berlopez
  

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Re: Autopilot use - tutorial by Lou
Reply #13 - May 27th, 2012 at 7:08pm
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I am unable to maintain altitude and the controllers keep contacting me to adjust altimeter setting constantly  Angry Even though I press the "B" key and check the numbers they're close then I adjuts using the mouse.They keep on contacting me. It's a nuisance!All I've done to the a/p is add the GPS gauge as itwas added back then. Hereis my a/p section in the panel.cfg file:

[Window03]
Background_color=0,0,0
size_mm=447,106
position=2
visible=0
ident=10005
gauge00=Captain_Sim.p721.P12!P12_001_ap, 20,0, 427,106
gauge01=Cessna!Nav_GPS_Annunciator, 0,0,20,20
gauge02=Cessna!Nav GPS Switch, 0,20,20,20

Has there been an update or amI missing something?

Berlopez
  

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LOU
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Re: Autopilot use - tutorial by Lou
Reply #14 - May 27th, 2012 at 8:06pm
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I guess your talking about adjusting the altimeter for local pressure.
When you fly for a long flight - more than a 100 miles the weather will change and I guess there times that even in short flights through weather systems the pressure could change enough to make a big enough difference that would cause ATC to alert you to up-date the altimeter. In Europe, when you fly above the transition level you set standard pressure - 29.92 inHG / 1013 hPa. Below this level or in the U.S. below FL180 you set local station pressure.

Every 28 feet = 1 hPa Cool

If you adjust the altimeter and now the new reading is 100 feet different you need to turn off altitude hold, adjust the altitude up or down as needed using the pitch knob ( I know it's sensitive ) and when at the proper level re-engage altitude hold.

I hope that helps, if not
pour yourself a nice Grand Marnier
and just do a little "Free Flight" Bernardo



Lou Wink

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