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Recent content by ErickC

  1. ErickC

    Tips and tricks from an idiot savant

    Again, trust but verify your sources. The 737-200 CAD drawings, which were used to build the original 737 fuselage used in this design study, match up with real-world station diagrams and measurements precisely. The 737-800 CAD drawings do not and are inaccurate!
  2. ErickC

    Tips and tricks from an idiot savant

    THIS IS WHY WE BUILD MODELS FROM NUMBERS, NOT DRAWINGS.
  3. ErickC

    An unplanned new feature: Unwrap Texture Creator

    The way DDS implementation in FSX/P3D was handled was quite poor and the source of much unnecessary confusion. For years, I simply assumed this was part and parcel with the DDS format - and I was wrong. When Open Rails implemented DDS, we simply kept the existing coordinate system. It was a...
  4. ErickC

    Contrast and colour are not thine enemies

    As I've spent more time with FS2020 & 2024, I've come to discover that most of us developers seem to be getting inspiration less from real life and more from Assassin's Creed with low-contrast, desaturated textures and heavy, excessively opaque AO layers. I kinda just wanted to remind everyone...
  5. ErickC

    North American V-Scale: PW Turbo Wasp JT8D Phase I

    Well, that was fun... Data points every 5% N1 RPM up to 100%, then 110% and 125% to ensure the table ends up well beyond the commanded N1 values. Again, note how minor the differences between the JT8D-9 and JT8D-11 are - it mostly boils down to increased RPM. This isn't too dissimilar to the...
  6. ErickC

    FSXA Boeing 737-300/400/500

    At the risk of sounding like a bit of a sardonic jerk, I feel obligated to point out that the answer is 3 posts above yours...
  7. ErickC

    North American V-Scale: PW Turbo Wasp JT8D Phase I

    Euughhhhh... now the sucky part. Currently, I am calculating the N1 RPM v. Thrust charts. The first step was to plot the known CN1 and thrust values from the literature. I then use splines and Bézier curves to interpolate between the points. I have extended the graph beyond the RPM ranges of...
  8. ErickC

    North American V-Scale: PW Turbo Wasp JT8D Phase I

    It's primarily a question of stick-slip interactions between surfaces, so I suspect we see a similar dynamic as in railway wheel squeal where the mid-range harmonic content we think of as "squeal" is generated when certain frequencies resonate in the parts. I've noticed that the high-frequency...
  9. ErickC

    North American V-Scale: PW Turbo Wasp JT8D Phase I

    The last sound gauge in the list is the wheel brakes, and I worked on those last week. Here's a clip of an in-sim test. Left and right are separate. https://www.dropbox.com/scl/fi/sa69mss0onef7oovgomn1/Brake-Test-2025_11_29.mp3?rlkey=g24m56i3vwf23smab55b8nd43&dl=0 The code uses a power of 1/4...
  10. ErickC

    North American V-Scale: PW Turbo Wasp JT8D Phase I

    The oft-neglected workhorse: https://www.dropbox.com/scl/fi/2z8m85v4uyss5bqwyo0a0/JT8D-7B-Runup-Internal-2025_11_12.mp3?rlkey=q01iol9laee4oamjodld800a2&dl=0 https://www.dropbox.com/scl/fi/4t811d5pdzpg3zozrr1wp/JT8D-7B-Runup-External-2025_11_12.mp3?rlkey=t5ny6b4orwqaq1cmtmyp0kcay&dl=0 I've...
  11. ErickC

    North American V-Scale: PW Turbo Wasp JT8D Phase I

    Sound Gauge Code to Date Boeing Flap Handle <Gauge Name="NAVS_Boeing_Flaps" Version="1.0"> <!-- Boeing flap handle sound gauge by North American V-Scale. Public domain. No permission necessary to use. --> <Element> <Select> <Value> <!-- This code plays...
  12. ErickC

    North American V-Scale: PW Turbo Wasp JT8D Phase I

    More work! I needed to make a stick shaker clip, so, with a recording I made a few years ago of the exhaust from my old Tercel (how I miss that car), some engine/exhaust clips from my GE 70-tonner, and a bit of treble from the default 737's clip, I arrived at this...
  13. ErickC

    North American V-Scale: PW Turbo Wasp JT8D Phase I

    More work off the checklist today; as indicated in the gauge design forum, I've been working on a gauge for aerodynamic noises. This gauge covers flaps, gear, slats, and speedbrakes (separate left and right streams due to the intrinsic nature of spoilerons). Here's a couple of in-sim samples...
  14. ErickC

    FS2004 XML flap handle sound gauge issues

    Ahhh, I think I see the problem, I am setting max volume at 10,000 instead of 0. I misread the documentation and implemented it as it's done in sound.cfg! It works fine now. :) Here is the end result. This is a reduction in speed with the speedbrakes from 300 KIAS to 200, then extension of...
  15. ErickC

    Table 1505

    Table 1505 is simply a graph of time (x) to N2 RPM (y). The default table is more or less backwards (low inertia at low RPM and high inertia at high RPM) and does not model the behaviour of any known jet engine correctly (certainly not the TFE731, RR Olympus, PW4084, or CFM56-3, the jet engines...
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