v0.3.0 issues



  • Thank you for the constant product development 🙂

    I have checked few things and what I have noticed is:

    • fuel flow doesnt match to the charts (at 2200 RPM, MP 22, full weight at 6000 feet and 10 C I had like over 10 GPH fuel flow) and I could not reach 120 kts (aircraft speed was below 100) <-- tried to simulate - Economy cruise (55% power – 2,200 RPM)
    • TAS indicator is not working corrently - it its impossible to turn the gauge to the left when it reaches 0 pressure altitude indication

    Still great plane to fly and you bring me joy back to VFR aircrafts 🙂



  • I'm having pretty severe performance irregularities as well. 26MP and 2200PM at my current altitude should be giving me 65% power, but I'm way up at 13.5GPH instead of 10 and I can bring the prop lever all the way to zero and it won't drop below 2300.



  • Couple of things I noticed so far (CFI on the P28R):

    1. Fuel flow/pressure seems erratic. Also no indications when priming the engine with the boost pump.
    2. The propeller spins while on the ground after the engine has stopped. I think this may be trying to simulate a windmilling prop because at the time I was experiencing high winds (22 knots gusting 36), but this is inaccurate.
    3. Drag from the landing gear is extremely excessive. Having done hundreds of power-off 180° accuracy approaches, I can tell you the descent rate is way too high. I was seeing descents in excess of -2000-2500'/min. Config was flaps up, gear down, idle throttle, full prop/mixture. It is basically impossible to do a proper power-off 180 approach at the moment (a standard maneuver done by all FAA Commercial pilot applicants, many of which train in a variant of the P28R). EDIT: I also tried these approaches with the gear up and noticed the descent rate was approximately -1000'/min, which is close to correct.


  • @crow , I agree completely with the landing gear drag being way too high... I believe the landing gear drag coefficient parameter in the flight_model.cfg file is currently set too high, especially when compared to other similar MSFS aircraft like the King Air 350... The drag coefficient on this aircraft is over 2.5 times higher than the King Air, which is also a larger aircraft.

    I recommend the following parameter change in the flight_model.cfg file to fix this issue...

    [AERODYNAMICS]
    drag_coef_gear =0.015 ;0.026836

    @crow , Give this new setting a try, and see how it compares to your past experience in the real aircraft... let me know if it needs further tweaking to match the real world aircraft performance.



  • The only other major issue that I have found remaining in this otherwise outstanding aircraft is the overly sensitive rudder and nosewheel steering, making it extremely difficult to maintain the runway centerline during takeoff. This problem is common in many of the default aircraft as well, which implies that it is partly due to the basic MSFS flight modeling. But, it can be largely corrected by making the following recommended parameter changes in the flight_model.cfg file...

    [CONTACT_POINTS]
    min_available_steering_angle_pct = 0.1 ;0.2 ; Defines the percentage of steering which will always be available even above max_speed_decreasing_steering (in percent over 100).

    [FLIGHT_TUNING]
    rudder_effectiveness =0.2 ;0.7



  • Also, the "cruise speed" is listed as 176 knots in the aircraft selection screen. Not sure where we're getting that number from, but I wish it was that fast IRL. 😆



  • What a crazy day. Even before starting a flight with the new update there was a sim patch to deal with. Then for a few flights after that the prop would not stop rotating and the wings kept rocking after engine shutdown. That behavior mysteriously stopped after yet another flight restart. I had uninstalled the previous version before installing v 0.3.0. So I had no clue as to what had caused this behavior or why it stopped. To be sure it was over that behavior I shut down the Sim and restarted again only to find another sim patch. Fortunately after all this crazy stuff things seem to be working normaly once again and I was happy to see many improvements. Between Asobo and MSFS addon bugs I have become totally gun shy of updates.



  • I just did a flight using a VOR (GNS 100) and noticed that the Nav 1 needle was stuck centred while Nav 2 worked correctly (albeit with some hunting left and right) on the same frequency and the autopilot was able to track it.



  • @Scupper , If the CDI mode on the GPS is not set to VLOC, then the OBS 1 needle will not respond to the NAV 1 radio. Unfortunately, there is no button for this on the GPS 100, so you have to change to the GNS 530 and then press the [CDI] button to change the mode. You can then go back to the GPS 100 if you want, and the OBS 1 will function normally.



  • @crow I am having even worse problems. Which ever button I press it operates hand brake. EFB ready for take off not working and can't start up. Which ever control or switch I press, the parking brake operates. Will be putting in a fault log. For now reverting back to 0.2.0 as this was working ok.



  • @sdvpilot said in v0.3.0 issues:

    ...Then for a few flights after that the prop would not stop rotating and the wings kept rocking after engine shutdown. That behavior mysteriously stopped after yet another flight restart. I had uninstalled the previous version before installing v 0.3.0. So I had no clue as to what had caused this behavior or why it stopped.

    I had the same thing yesterday but that was with v0.2.0 before I installed v0.3.0:
    https://community.justflight.com/topic/1883/propeller-not-stopping-on-shutdown. Same as you, I uninstalled v0.2.0 (using the Just Flight shortcut in the start menu) before installing v0.3.0.



  • @Sender46 After blaming this update for the engine shutdown issue I later recalled this happening once before with some other aircraft. So now I am thinking this behavior lies in wait within the sim itself. It may have something to do with wind direction and velocity but I myself have never seen wind strong enough to spin the prop on a dead engine parked on the ground.



  • @sdvpilot You may be onto something there. It was quite windy when it happened to me, about 17kts as I recall, using live weather. I've just tried to replicate it with a 30kts headwind but it shut down normally, so can only wait to see if it happens again.



  • @Sender46 Yes as I recall it was a bit windy at both times I have seen this behavior. I was thinking of trying what you did but have not gotten around to it. Maybe wind direction may also play a part. However even if it is local wind that triggers this behavior it is totaly overblown lol. I saw something on the MSFS forum about the prop continuing to spin when facing downwind. Also the simulation of cylinder compression on the prop may not be correct.



  • @sdvpilot Nice pun 🙂



  • @szymek2392 I made some modifications to the TAS scale textures, see https://community.justflight.com/topic/1902/fixed-tas-scale



  • @sdvpilot Just started cold and dark on the runway at Lee-on-the-Solent, everything off but with the prop turning (live weather, runway heading 230, wind from 228 at 28kts). With the prop still turning I changed the weather to a preset and the prop stopped immediately, which appears to confirm that it is the wind causing this.

    EDIT: Exited the sim and restarted in the same place with the same conditions but with the engine running. Shut down and the prop kept turning. Changed weather to a preset again and the prop stopped turning. So yes, it's definitely the wind causing this. As you said, it appears to be an MSFS issue, apparently due to propeller effects not being correctly modelled in MSFS.



  • @Sender46 That is very interesting because I also tried experimenting with wind direction and speed but I could not get the prop to spin on the ground with a dead engine unless the wind was around 100 knots and even then the plane did not rock from side to side as it did when I experienced the. shutdown issue. With a headwind at that speed I expected the plane to lift off the ground but it did not. I could sure hear that wind blowing at that speed. So I am pretty sure it was being simulated. I even started and then shut down the engine several times with around a 50 knot wind vlocity from several different directions and each time the prop stopped spinning. So I could not reproduce the problem. However I did not do this under live weather conditions so that may also be a very strange factor. I will have to try it again on a live windy day.



  • I also experienced this on other aircraft while using LIVE weather, with moderate winds.



  • @RetiredMan93231 said in v0.3.0 issues:

    The only other major issue that I have found remaining in this otherwise outstanding aircraft is the overly sensitive rudder and nosewheel steering, making it extremely difficult to maintain the runway centerline during takeoff. This problem is common in many of the default aircraft as well, which implies that it is partly due to the basic MSFS flight modeling. But, it can be largely corrected by making the following recommended parameter changes in the flight_model.cfg file...

    [CONTACT_POINTS]
    min_available_steering_angle_pct = 0.1 ;0.2 ; Defines the percentage of steering which will always be available even above max_speed_decreasing_steering (in percent over 100).

    [FLIGHT_TUNING]
    rudder_effectiveness =0.2 ;0.7

    After more testing, here are some better nosewheel settings that will improve the taxi steering, without negatively impacting the previously recommended takeoff steering improvements...

    [CONTACT_POINTS]
    max_speed_full_steering =20 ;10
    max_speed_decreasing_steering = 30 ;20
    min_available_steering_angle_pct = 0.1 ;0.2

    [FLIGHT_TUNING]
    rudder_effectiveness =0.2 ;0.7