Jump to content

Goran_M

Leading Edge
  • Posts

    5,606
  • Joined

  • Days Won

    218

Goran_M last won the day on February 29

Goran_M had the most liked content!

About Goran_M

  • Birthday 03/16/1972

Contact Methods

  • MSN
    goran_mato@hotmail.com

Profile Information

  • Gender
    Male

Recent Profile Visitors

34,366 profile views

Goran_M's Achievements

Collaborator

Collaborator (7/14)

  • Well Followed Rare
  • Reacting Well Rare
  • Dedicated Rare
  • Conversation Starter Rare
  • Very Popular Rare

Recent Badges

1.7k

Reputation

Single Status Update

See all updates by Goran_M

  1. Hello Goran -- I publicly apologized for my Plane-Maker posts, and removed the specifics from Engine Behavior Issues. I am sorry. I really understand the support problems. I am a professional developer with over 1000 astronomical observatories as customers :-) My company is called DC-3 Dreams, SP (!!!) and has been in business for 19 years. 

    Anyway, I am a real DC-3 pilot so I know how the engines should be, what the limits are (at least for  the P&W R1830-92 which I assume you modeled, not the Wright R1820). I worked more on the engine behavior yesterday, specifically:

    • sluggish throttle response (turn off FADEC)
    • Governor not working to keep the RPM constant when the throttles are changed (this is really unrealistic, they are "constant speed propellers")
    • Inability to ever reach max RPM (2700), even in flight
    • Inabiity of the propeller levers to bring the RPM below 1700 on the very important run-up propeller governor check
    • Idle cannot go below 800 rpm (should be 600)

    I was able to make adjustments that resulted in first three. The odd  thing is that I had to "cheat" in Plane-Maker on the max RPM and red-line. But the results, as you will see, are that it correctly governs at 2700 as the MP moves from 35" to 45" (slowly, it will overshoot if the throttles are moved too quickly and this is correct).

    Anyway, here are settings that will provide much more realistic engine behavior. You will notice a distinct performance improvement. Acceleration, which I found to be sluggish compared to real, is also more realistic, and the single engine behavior is better. You will also notice that the engines can (barely) reach 2700 RPM at max power even standing still. Give this a try, I think you will be surprised.

    I wish I knew how to fix the low-end and idle issues. I suspect that will involve some "deeper" changes beyond my knowledge and understanding. I also don't like the fact that I had to set the limits 200 RPM below what they should be. I can only say that the result is much more realistic behavior and limits.

    Snap3.jpg

    Snap1.jpg

    1. Goran_M

      Goran_M

      Hi Bob
      There are still things in X Plane itself, that are not perfect.  That's why it's constantly being updated.  Sometimes things need to be heavily modified or hacks put in, just to get things to work how we want them.  For example, The Saab has it's own engine model that operates outside of X Planes engine model.  

      I will take a look at what you posted here and do some tests.  After I post an updated acf, I will be sure to credit you for the fixes.

      The DC3 was never meant to be as popular as it is.  It was only meant to be a small side project to give me some pocket money.  It turned out to be a pretty big seller, and I regret not putting more detail into it.

      I do look at everything people suggest.  Paticularly you and "Douglas49" (the other guy in the forums).  But some things will just take too much time to add for an XP10 version update.  
      In saying all of this, please stick around.  I may get you to be a tester for the XP11 V2 upgrade.

    2. Bob Denny

      Bob Denny

      Thanks Goran. I definitely intend to stick around. I just made a 1:40 flight from Battle Mountain Nevada to Salt Lake City, starting at evening twilight. I navigated solely by the lighted airway beacons and the Four Course LF Range (and its fan marker beacons). I have all of the roads and cities turned off so it becomes a black as ink experience except for the stars, the beacons, the "acetylene blinkers" and the airports which "appear out of nowhere".

      I took Araneus' lighted airways, made some fixes, and enhanced it to include uncorrelated slightly varying rotation periods for the beacons and morse coded course lights on the towers. I also moved some beacons around to match the 1940s sectional charts I have.

      The LF Range Experience is something I also developed.

      Why? This is me when I was 2 years old, in 1948. Note the DC-3 on weeds, an unimproved landing field in Wyoming. My Mom put me in that crib, closed the top, loaded it into the DC-3 and off we went. I just bounced around in there. So many hours in the jump seat ad a young boy, and some time in the right seat too.N66699BruceCrib.jpg

       

    3. Bob Denny

      Bob Denny

      PS if someone wants a "modernized" DC-3 they can get the Heinz one. I think it is bad. A DC- that has Cessna instruments. The panel looks totally bad. But they have the colored AI, compass card, all the "newer" stuff. Bah!!

       

×
×
  • Create New...