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Hotfix 1601 (Read 1356 times)
Angel of Attack
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Re: Hotfix 1601
Reply #15 - Oct 18th, 2020 at 11:02am
 
It seems to me while all other changelog are also applied to RR version, the - 0216 VNAV calculation are still there with RR one?
  
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Funkarter
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Re: Hotfix 1601
Reply #16 - Oct 18th, 2020 at 2:38pm
 
EY wrote on Oct 17th, 2020 at 9:51pm:
Chris, thank you for the quality report, please try the updated version


I have tried the new file as requested and the first impression is that there is a definite improvement but there is probably some fine tuning required.

AT TOD the aircraft still descends initially at 4000ft/min and I get a vertical track error of 650ft and the speed increases to 317 from 301. the rate of descent then reduces to 500ft per minute the speed stabilizes before the aircraft again enters a 3500ft/min descent slowly reducing to 200 then finally 1500ft/min. The strange behavior observed previously has gone.

Just an observation but it probably requires a real world 757 to comment. As you approach the TOD the autothrottle starts to reduce thrust at approx 1nm before TOD. AS you hit the TOD there is still approx 2/3rds thrust. I would have thought that it would be approaching idle which would allow a smoother transition onto the descent path.

Files attached.

Keep up the good work.

Chris
  

New_folder__2_.zip ( 113 KB | 7 Downloads )
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trevors
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Re: SYSTEMS & DYNAMICS
Reply #17 - Oct 16th, 2020 at 3:51pm
 
CaptLE wrote on Oct 9th, 2020 at 7:56pm:
[FSX 1.6]

HOLD waypoint is shown on the LEGS page with course instead of 'HOLD AT' above its name.

(Manual Part II, pg. 415)
" Leg segment data in line title:
      courses - magnetic (xxx°) or true (xxx° T)
      arcs - distance in miles, ARC, turn direction (example: 24 ARC L)
      heading leg segments - xxx° HDG
      track leg segments - xxx° TRK
      special procedural instructions from database - HOLD AT, PROC TURN. "

---

In the image, HOLD AT is not shown on the second instance of SPL, instead the course is displayed again below the original waypoint:

AIIR#6


Using Hotfix 1.61 and this problem is still there. Files attached
  

Prepar3D_v4_Files_003.zip ( 31 KB | 6 Downloads )


Trevor
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trevors
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Re: SYSTEMS & DYNAMICS
Reply #18 - Oct 16th, 2020 at 3:52pm
 
The VNAV function is not corrected in hotfix 6.1. In VNAV descent, the airplane speed increases and goes right into the red band. Files attached
  

Prepar3D_v4_Files_004.zip ( 31 KB | 4 Downloads )


Trevor
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Angel of Attack
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Re: SYSTEMS & DYNAMICS
Reply #19 - Oct 17th, 2020 at 4:48am
 
ECON cruise speed not change with CI change.
When changing the PREF INIT CI input with preflight or inflight, the speed for CLB and DES are change accordingly, but the CRZ speed stays at Mach.800. file attached when climbing, you can navigate to PREF INIT page to play with the CI.
Related Manual part II p343-CRUISE and p394-COST INDEX.

As I've heard it's same for 767:
https://www.captainsim.org/forum/csf.pl?num=1598229895
  

CS752CI.zip ( 112 KB | 6 Downloads )
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Angel of Attack
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Re: SYSTEMS & DYNAMICS
Reply #20 - Oct 17th, 2020 at 4:55am
 
in PROGRESS PAGE 1, the DEST line dosen't show DTG, ETA and FUEL for DEST, without select a ARR procedure. regardless the airport ICAO is or not at the final waypoint.

I think it works as it should be in 1.5, the DEST will show a predicted DTG,ETA and FUEL based on direct to airport from final  route waypoint, even without ARR procedure input, it will updata to be more accurte with one inputed though.
  

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Bill62
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Re: SYSTEMS & DYNAMICS
Reply #21 - Oct 17th, 2020 at 2:46pm
 
As noted by Trevors VNAV decents go right a controlled decent into over speed.
  
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Angel of Attack
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Re: SYSTEMS & DYNAMICS
Reply #22 - Oct 18th, 2020 at 4:28am
 
This one is kinda hard to describe, but it's mainly the waypoint's speed restriction not followed after that waypoint.
The save file is captured right after the waypoint. STAR "GUL-1J" to ZPPP (cycle 2011), there is a speed restriction of 205kts at PP533, the VNAV did slow down before PP533 and met the restriction, but after PP533, the VNAV speed bug goes up to 240 again (as SPD TRANS 240/19700 input into VNAV DES).
in the VNAV DES page, I can also see the title shows ACT 205KT DES, but the SEL SPD shows 240, as the yellow bug on speedo.
Hard to find the exact manual description, but all boeing FMCs  should work as a waypoint speed limite at descend should affect all after untill a new one. and that's also the pre-1.50 behaivor.
  

cs752desspdres205.zip ( 128 KB | 5 Downloads )
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Angel of Attack
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Re: SYSTEMS & DYNAMICS
Reply #23 - Oct 18th, 2020 at 5:22am
 
In VNAV descend, when speed droped 15kts below target speed, AT changed from HOLD to SPD, then as speed back to target speed, it doesn't change to IDLE/HOLD as manual II p346., but directly to HOLD, thus hold a sometimes very high throttle, and risk of overspeed.
after get back to target speed, it should go IDLE first, only after the throttle lever are actually at idle, then it will change to HOLD.
  
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Captain Sim
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Re: Hotfix 1601
Reply #24 - Oct 20th, 2020 at 7:19am
 
  
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