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Showing results for tags 'flcs'.
Found 7 results
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A high AoA roll when going less than 300kias will pull the airplane out of the slip stream. I'm able to do this rolling to the left and the right. F16 Spin 6 08 22.trk
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Dear, In the most recent update, a flight model adjustment was made to the excessive yaw in landing configuration. This indeed seems to have been fully fixed. thank you. However I have noticed that after liftoff, after the gear is raised, there still seems to be some excessive yaw with roll inputs. I have tested with landing gear down too after liftoff and the yaw seems to be less severe. In the added trackfile I have tried to demonstrate my findings, I agree that the roll inputs are excessive but it was to demonstrate the yaw effect with roll. After passing roughly 300 kts the excessive yaw input seems to fade away and returns to a more normal correction. Kindly advise. With kind regards, Maurits Robert van Gelder F16C Take-off Yaw.trk
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Hi, The Yaw Rate Limiter will activate when AOA > 35 deg, as well as AOA < -5 deg while airspeed < 170 kts, that the flaperon and/or the rudder is automatically commanded to negate any yaw rate built-up. Current behavior: The rudder is deflected into the yaw. Expected behavior: The rudder should be deflected against the yaw. 16 Yaw Rate Limiter wrong rudder deflection.trk -
Hi, Good job with the new FM/FLCS update. However I'm experiencing a greatly degraded dynamic stability when flying between 300 and 400 KCAS in AAR gains (AAR door open). This may apply to gear down too. Testing method: Open the AAR door and stay within 300 to 400 KCAS, apply a step input to make a pitch disruption. Observe the well developed phugoid. Expected behavior: The dynamic stability should at least be inline with that of airspeed < 300 KCAS. This degradation of dynamic stability is not recorded in the Flight Characteristics section in -1. F16 FLCS TO-LDG gains phugoid.trk
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When performing a full aileron roll, with only lateral stick input, at the end of the roll the FLCS "pulls up" automatically up to a couple of Gs to bring back the nose (it seems) to the initial attitude. E.g. if you start the roll from a 10 degree nose up attitude and during the roll the nose naturally drops, at the end the aircraft automatically pulls the nose up to 10 degrees again, without any pilot input. This is not how the FLCS works, it never commands more than 1g by itself, and a roll should be just like in the Hornet or Mirage. See video and track (P.S. ED you shoudl REALLY increse the 5mb limit!) https://wormhole.app/d1QaN#qb6vr9jR_4tfw98iz7GncA
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Hi, When flying with my squadron these days I noticed yet another newly introduced bug that is not related to inertia coupling or the yaw rate limiter. It seems like a pure pitch FLCS issue and not an aerodynamic issue. Description of situation: After the aircraft is departed from controlled flight, the FLCS tends to command pitch-down by driving the horizontal stab to the trailing edge down position, during pitch-down motion in negative AOA. This is quite weird since the FLCS is supposed to command nose-up in the case of a pitch-down motion, as it is receiving a negative pitch rate feedback. This looks like the FLCS deliberately pushes the nose down and increases the pitch rate while in the negative AOA, which could result in a backflip. Testing Method: Use the MPO to force a departure and then return the MPO to NORM. Watch the horizontal stab reaction to pitch-rate and AOA. I've highlighted the issue with slow motion in the track file. Expected: The FLCS should not try to deliberately increase the pitch rate but to reduce it. F16 FLCS caused backflips.trk
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By referencing a publicly available FLCS flashcard (https://quizlet.com/309832047/flcs-flash-cards/), the yaw rate limiter is activated when AOA > 35° until AOA is reduced below 32°. A similar description can be found in the dash-1 manual (which is not quoted here), but I'm not seeing this behavior in DCS F-16. In the two tracks below, the activation AOA is 29° as indicated by the suddenly reducing aileron deflection upon crossing 29° AOA. This is an incorrect value by the F-16 version we had. Viper yaw rate limiter activation AOA - track2.trk Viper yaw rate limiter activation AOA.trk
