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camlost2

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Everything posted by camlost2

  1. camlost2
    If you have experience in flight simulators you can see that is how a helicopter flies. Congratulations Desired value is rudder input, but some input left and right is always needed. Limitation of PID controllers
  2. camlost2
    if it doesn't counter torque what does it do? What you are looking for is actually a PID-tuning method right? There're several general methods but none specific to this mod.
  3. camlost2
    @damowang2 1. The helicopter config for APP is included in AJE not AJEextended. 2. Did you set the PID parameters for tail rotors？
  4. camlost2
    //8-bladed %CtTweak = 2 %CpTweak = 2 this is saying in the JSBSim module, thrust coefficient and power coefficient are multiplied by 2. Number of blades is not a parameter
  5. camlost2
    You miss my point, the rolling tendency doesn't exist in the propeller code, and it'll be hard to simulate realistically So a contra-rotating propeller should be the same with a 8-blade prop. But a coaxial chopper is not the same with two 1/2 choppers
  6. camlost2
    ModuleEnginesAJERotor is helicopters only. it provides aerodynamics of the blade disc, and also (most importantly) collective and cyclic control & other features you only find on helicopters. For a ducted fan without those features a turbofan model is enough, I remember I made a F-35B engine years ago. If you don't know I guess you can google what a flapping hinge offset is on a helicopter rotor. I game it's just a pseudo-realistic feature adding to cyclic control authority. Most choppers except 2-bladed light choppers should have it. rotating direction can be defined by clockWise which defaults -1. For Russian (like Mi-17) and European choppers they should be 1, for coaxial , 0. I don't remember much about propeller since most of the propeller code was from NathenKell. But notice this: the tendency of rolling in one direction on a prop aircraft is largely caused by the prop blades disturbing airflow over the wings, not just torque.
  7. camlost2
    There's no scramjet and I don't think there will be one. Unless if someone can figure out a physical model and write a dedicated AJESCRAMjet module. No, a cooler is not 'further compressing'. Compressing increases internal energy while cooling reduces it. Energy cannot be destroyed only transferred. Ramjets don't have compressors so "precooled ramjets" don't exist.
  8. camlost2
    The physical model of ramjet cannot simulate SCRAMjet. I don't know of a *precooled ramjet* IRL, where does the heat go?
  9. camlost2
    Of course we take pull requests but make sure you test fly before pushing. On how to make AJE confgs
  10. camlost2
    @Citizen247 I haven't checked everything but it seems the F119 engine is also wrong. Likewise, there was a F119 config in AJE/B9.cfg The mistake is that F119 should have a very high bird which makes it an engineering miracle.
  11. camlost2
    @Kitspace @Citizen247 It seems the cfm56 in MoS_AJE-APP.cfg has some mistakes. the maxThrust and Area are way too high. and bird is not defined? I'm surprised this thing can generate any thrust. And what is bird? @MODULE[ModuleEngines*] { @name = ModuleEnginesAJEJet @maxThrust = 233.5 Area = 1.55 BPR = 4.24 CPR = 30 FPR = 1.7 Mdes = 0.8 Tdes = 250 eta_c = 0.95 eta_t = 0.98 eta_n = 0.9 FHV = 32000000 bird = 1600 TAB = 0 exhaustMixer = False adjustableNozzle = False thrustUpperLimit = 280 maxT3 = 900 intakeMatchArea = True defaultTPR = 0.95 drySFC = 0.357 dryThrust = 86.7 Usually when you make a cfg the easy way is to search for it in the existing files in AJE. in the case of CFM56 there is one in AJE/B9.cfg that's been there for years. Really not necessary to rebuild a wheel. if anyone wants to make a new engine it's much easier. use this standalone program to calibrate the parameters https://github.com/camlost2/AJEsolverTester (algorithm a bit outdated) it includes a excel table of public data of hundreds of jet engines.
  12. camlost2
    what kind of mods are you using regarding CFM56 and CF6? I'll look into it. I have an impression that the idle thrust is generally a bit high too.
  13. camlost2
    Currently I've only made cfg for Airplane plus, not sure which other mods are still active...
  14. camlost2
    AJE v2.11.2 is released this update makes helicopter more real but also a lot harder. @blowfish could you update the OP?
  15. camlost2
    If realism is what you want, then there's so much more to do than a propeller that runs on EC. First a typical solar plane is made of ultralight material, can we do that in KSP? The airfoil is chosen to maximize lift/drag ratio, can we do that in KSP? Even if we get one in the air, the thing is so darn slow so do we want to do that in KSP?
  16. camlost2
    https://en.wikipedia.org/wiki/Mil_Mi-26 says 132 rpm
  17. camlost2
    AJE v2.11.1 is released
  18. camlost2
    AJE v2.11.1 is released Rotary wing aerodynamics Stability augmentation system via user-defined PID controller supports complicated configs like tandem-rotors and tilt-rotors easy to fly, build and make cfg use joystick or mouse , keyboard could be hard
  19. camlost2
    AJE v2.11.1 is released
  20. camlost2
    Procedural parts
  21. camlost2
    Look, AJE is aimed at reality so if you want to build a Mi-26 you better lookup the real world Mi-26 and tell AJE about it. There's no way a rotor runs at 2000RPM because the tip of blade will be several machs in speed. and 5000RPM is ridiculously low. Besides, the plugin is in dev with constant updates
  22. camlost2
    seems like tweakscale is updated and my old config file doesn't work. But you can still try to write a config yourself. example: all you need to change is rpm = 324 // rotor RPM r = 7 //rotor diameter weight = 4500 //max take-off weight in kg power = 1600 //max shaft power in HP Number of blades doesn't matter! and change mass and rescleFactor of the part of course. Edit: not sure what you mean by "a collective pitch of 7.5"
  23. camlost2
    use tweakscale build 900 tons if you want yes AJE supports tweakscale thank you for your notice
  24. camlost2
    For helicopters you guys should use AJE Although I admire snjo's coding and modeling technique, Firespitter's physics for helicopters and propellers are unscrutinized. Or I may say they're just wrong. A rotary wing is NOT a magical device that just spews a constant thrust. To have that, and you need to actually rely on some other plugins to keep the pilot alive is ridiculous. Anyway if you want to try out just download the repo, not v2.11.0 release. It includes my new approach to building a relatively realistic rotary wing model while keeping flying easy enough. All the rotors in this mod are supported except for VTOL. Also check out the mod "AJE Extended"
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