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 25 SYSTEMS ISSUES (programming only) (Read 94510 times)
arpom
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #15 - Jan 27th, 2014 at 6:09am
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Dear CS

As last few days i am testing L1011 i have few things to share.
Listed items are not having any negative tinge, please find them as items for consideration, disscusion or future improvements.
L1011 with present system depth is already true FSX diamond ( which eventually can have a few more cuts Smiley )

1. Thrust reversers logic - in real plane thrust reverser logic was that after activating, 42% of net thrust was available. At 70 knots net thrust automatically was reduced to 33% to prevent hot air ingestion.
I have not noticed such logic on CS L1011.

2. APU - 15sec. time for APU ready state including door opening is not realistic time. I think, time about 1 min. would be realistic.

3. Electric load - always fuel pumps are giving big load for plane electrical system. As checked, switching them 'on' or 'off' does not influence electric system. I think same situation is with other consumers ( lights etc. )

4. Question - using alternate gear extension, should gear doors close automatically after landing gear dropping ?

5. Wing vortex - almost all flights and all weather conditions i can see wing tip votex effect. I think it is not realistic, as this effect appear only with certain conditions ( AoA and moisture in the air )

6. Fuel dump - would be very nice to have visual effect for fuel dumping. As noticed, jettison is done with rate aprox. 14000 lbs/minute per tank. I have found info that rate is 4500lbs/minute.

7. Fuel temperaturę logic - as noticed tank fuel temperaturę is changing very fast in quite big range, which is not realistic. In fact to decrease temperaturę of 100.000lbs of fuel by for example 20deg.C, we will need time up to few hours ( depends on FL and temperatures ).

8. Weather radar range display - regardless of max. range set ( 30,80,100 ), on screen we have always max 50nm.

9. Pressure system logic - as noticed, absolute wrong settings ( wrong baro press. and wrong alt. ) does not trigger any alarm, only complete depressurization is giving fault alarm. No alarm with wrong setting is correct logic ?

10. EPR - as found in original table and compare EPR value for given N1 there is quite big disscrepancy. Acc 'book' for example for N1=92.8% with outside temp. +14C EPR should be 1.539. As checked in FSX, when set N1=93% EPR is only 1.42, therefore it is not possible to follow real charts and tables.

Artur
  
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Captain Sim 2
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #16 - Jan 28th, 2014 at 1:47pm
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Caribflyer wrote on Jan 25th, 2014 at 4:28pm:
I just tried flying from the F.O seat and I noticed that the INS does not engage when selecting the Right Autopilot and the Right Alt Nav button on the F.O's side of the cockpit.

When I switched over to the left autopilot and the left seat it worked fine.


You can use more than one INS Unit. Right A/P Switch and right Altn Nav switch will connect or disconnect second INS Unit to A/P.
How to integrate second unit - please read http://www.simufly.com/ins and CIVA INS Doc.
  
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #17 - Jan 28th, 2014 at 5:24pm
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Artur,

Thank you for report. We have two comments for now.

Quote:
8. Weather radar range display - regardless of max. range set (
30,80,100 ), on screen we have always max 50nm.


We would gladly fix (if there is the issue to fix) it after we see some manual or photo with all range display variants.

Quote:
10. EPR - as found in original table and compare EPR value for given N1 there is quite big disscrepancy. Acc 'book' for example for N1=92.8% with outside temp. +14C EPR should be 1.539. As checked in FSX, when set N1=93% EPR is only 1.42, therefore it is not possible to follow real charts and tables.


We will consider those fixes only after we see tables or graphics of EPR AND N1 on idle, cruise and max for Rolls-Royce RB.211-22 engine.
  
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maxs
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #18 - Jan 28th, 2014 at 6:00pm
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Captain Sim 2 wrote on Jan 28th, 2014 at 5:24pm:
Quote:
10. EPR - as found in original table and compare EPR value for given N1 there is quite big disscrepancy. Acc 'book' for example for N1=92.8% with outside temp. +14C EPR should be 1.539. As checked in FSX, when set N1=93% EPR is only 1.42, therefore it is not possible to follow real charts and tables.


We will consider those fixes only after we see tables or graphics of EPR AND N1 on idle, cruise and max for Rolls-Royce RB.211-22 engine.



Dear Tanya,

please see the document 1011PERFORMANCE.pdf in the file "1011perf.zip" available on flightsim.com/vbfs/fslib.php?searchid=20172370


That is a performance guide fot the L1011-1 /-50 /-100 with the RB211-22B engine.
Included are performance charts with EPR and N1 for different flight phases and meteorological conditions.

But I have to state clear that it is not my document, I have only found it and I cannot guarantee it's correctness. It seems to be right, though and it is definitely worth a look.
  

Regards and always happy landings,&&Max&&&&
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paul_smith_gw
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #19 - Jan 28th, 2014 at 6:11pm
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maxs wrote on Jan 28th, 2014 at 6:00pm:
Captain Sim 2 wrote on Jan 28th, 2014 at 5:24pm:
Quote:
10. EPR - as found in original table and compare EPR value for given N1 there is quite big disscrepancy. Acc 'book' for example for N1=92.8% with outside temp. +14C EPR should be 1.539. As checked in FSX, when set N1=93% EPR is only 1.42, therefore it is not possible to follow real charts and tables.


We will consider those fixes only after we see tables or graphics of EPR AND N1 on idle, cruise and max for Rolls-Royce RB.211-22 engine.



Dear Tanya,

please see the document 1011PERFORMANCE.pdf in the file "1011perf.zip" available on flightsim.com/vbfs/fslib.php?searchid=20172370


That is a performance guide fot the L1011-1 /-50 /-100 with the RB211-22B engine.
Included are performance charts with EPR and N1 for different flight phases and meteorological conditions.

But I have to state clear that it is not my document, I have only found it and I cannot guarantee it's correctness. It seems to be right, though and it is definitely worth a look.


Also on avsimrus there is an old Delta Manual for the L-1011 filled with performance charts.
  

&&&&
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #20 - Jan 28th, 2014 at 6:14pm
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Thank you! We will check the file.
  
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Caribflyer
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #21 - Jan 28th, 2014 at 6:56pm
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Tanya,

The L1011 files on that website also contain information on the PMS used by Delta's L1011.
  


Marlon Carter
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #22 - Jan 29th, 2014 at 11:03am
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Quote:
6. Fuel dump - would be very nice to have visual effect for fuel dumping. As noticed, jettison is done with rate aprox. 14000 lbs/minute per tank. I have found info that rate is 4500lbs/minute.


Will be added in the next update.
  
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arpom
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #23 - Jan 29th, 2014 at 11:16am
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Smiley - Good news!, keep them coming Smiley

Artur
  
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Caribflyer
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #24 - Jan 30th, 2014 at 2:11am
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Not sure how many of you are on Facebook but here is a website that has an L1011 project that seems to be going pretty well. Their facebook page has a few videos that feature APU start up (from the outside) and some dry engine runs.

Here is their website
http://tristarhistory.org/l1011-n91011/

And here is their FB page where you can find their videos
https://www.facebook.com/TriStarHistory


-The APU really does start up quickly (about 20-25 seconds)
  


Marlon Carter
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mrzeiten
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #25 - Jan 30th, 2014 at 8:50pm
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You also has this great project.

http://l1011project.blogspot.no/
  
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #26 - Jan 30th, 2014 at 9:19pm
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Quote:
Thrust reversers logic - in real plane thrust reverser logic was that after activating, 42% of net thrust was available. At 70 knots net thrust automatically was reduced to 33% to prevent hot air ingestion.
I have not noticed such logic on CS L1011.


The issue will be fixed in the next update.

Quote:
Question - using alternate gear extension, should gear doors close automatically after landing gear dropping ?


No they should not. The issue will be fixed in the next update.
As well as landing gear uplock mechanical release lever incorrect pulling direction.
  
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arpom
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #27 - Jan 30th, 2014 at 11:54pm
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Dear Tanya - Great, just Great !

Question - do you have in mind lights upgrade ?
Last night i was having night flight and :
- default taxi and landing lights are...  Cry, u can do so much better i believe Wink
- landing lights halo on fuselage is far out of real one
- as strobe lights are already customized, nice final touch would be to give them ground splash, so can see it from cockpit.
- those old beauties had rotating beacons if i am not mistaken - correct ?

Thanks Tanya

Artur
  
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Markoz
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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #28 - Jan 31st, 2014 at 1:59am
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After restarting a saved flight, the Fuel Used Counters reset. Sad
  

Mark Fletcher



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Re: SYSTEMS ISSUES (Logics and programming only)
Reply #29 - Jan 31st, 2014 at 8:35am
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Check this topic:

http://l1011project.blogspot.de/2013/10/l-1011-trainer-installation-battery-and....

http://www.youtube.com/watch?v=2PVaZJYjl9o

The STBY BAT FLOW BAR doesn't work



The System logic - at least concerning the announciators - doesn't work as shown in this example

  
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