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01-03-2007, 02:45 PM #1
Flight characteristics as real aircrafts
Hello,
I am building homecockpits since 4 years using several hardware and PM double Boeing setup. My new project is a 737NG using...
1. CP USB MCP and both EFIS units
2. 4 clients driving PM software and the server driving FS9 (default 737)
3. PM System interfaces with Phidgets directly.
Everything is working fine... ,But...
Can enybody tell me the trick to get an nearly real flying aircraft.
Every ILS is out of limits using the PM MCP driven by the CP MCP. When intercepting the GS (HAM RWY 23) the FD commands UP, the aircraft is climbing above all selected altitudes. No LOC intercept is correct. Autoland is impossible at all.
What I am doing wrong ???
Is there any special setting to do or must I use another flight model...?
Many thanks and a happy new year...
Brian
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01-03-2007, 02:56 PM #2
- Join Date
- Oct 2005
- Location
- Holley, New York U.S.A.
- Posts
- 1,776
Hi Brian. Hmmm sounds like something is not setup right, or you have the default autopilot fighting with PM's. When you say it is commanding up, what altitude do you have set in your MCP? Do you have the AP ingauged? The aircraft still needs you to set the altitudes in the MCP. It will not command them automaticly unless you set it up to do that. As far as the ILS being out of range you don't get them untill about 10NM out. What are you using for radios? I will help, we can get this working.
Bob Reed
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01-03-2007, 03:17 PM #3
Also do u have the latest builds of PM software?
Chris
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01-03-2007, 03:35 PM #4
Hi Chris,
Hi Bob,
At first...
many thanks for replying so fast.
When I intercepting the LOC within range (MCP SPEED selected 170, Flaps 5, APP ARM, A/P A & B selected) The LOC is captured (+/- half to one dot). The FMA is showing LOC green, GS ARMED white. So far so good...
MCP ALT is set to 3000, that is the intermediate altitude for the RWY 23 in HAM.
When approaching the GS there was no intersept. The FD commanded pitch up, the aircraft followed and begun to climb above the selected altitude.
Using the default 737 without PM MCP sofware, interception is normal but could be some more precisely.
By the way, what flight models are you using ?
Brian
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01-03-2007, 05:04 PM #5
Interesting issue. Can you tell us something about the plan in the CDU/FMS. I wonder if you have set a runway extension like 12 miles out, this sometimes helps to get aligned in time. And just asking for the obvious, but do you have the runway selected including the radio settings?
Maybe you can upload the flight plans (MS-FS and CDU) to our File Library in the section Flight Plans. Then we can fly the plan and see what happens.Last edited by ekezz; 01-03-2007 at 05:30 PM. Reason: added flight plan suggestion
Kester Meijer
http://www.mycockpit.nl - to see my cockpit construction
Certified De-Ice Supervisor EHAM
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01-03-2007, 05:42 PM #6
- Join Date
- Oct 2005
- Location
- Holley, New York U.S.A.
- Posts
- 1,776
Kester's idea is a good one. Will let us see what you are seeing or if it is specific to your setup.
Bob Reed
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01-03-2007, 06:49 PM #7
Thanks,
I will work on it tomorrow..
keeping you advise.
Brian
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01-04-2007, 08:18 AM #8
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01-04-2007, 09:54 AM #9
Brian,
One thing that you mentioned is that your Aircraft tries to pitch up when going to intercept.
Limitations with flightsim, make sure when your intercepting G/S you always below the G/S flying into it.
The autopilots generally always want to climb to intercept the G/S.
You probably already know this, just my tidbit on a possible easy elimination.
Trev________________________
Trevor Hale
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01-04-2007, 11:17 AM #10
- Join Date
- Oct 2005
- Location
- Holley, New York U.S.A.
- Posts
- 1,776
Oh.. Good catch Trevor. I did not think of that. I just do it without thinking! You must be below GS. And around 45deg to the ILS. PM is not as picky about that but good practice.
Bob Reed
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