unicorndog Posted August 30 Posted August 30 I'm fine using trim in every other DCS 'copter I have - Huey, AH-64D and MI-8 but I cannot seem to trim the Chinook for level flight above 140 knots or so or around >50% throttle. When I'm less than 140, I use the CD REL around the attitude I want and then adjust with trim hat, everything's great. Above 140, I do the same and the aircraft pitches hard in the direction I am trimming - if I'm trimming down, it does a nose dive; trimming up it goes nose high. It will stay in trim at a climb rate of ~1k, this gets worse the more power is added. If I just use my joystick, I can find a position at that speed where I am level with out many micro adjustments, but as soon as I hit CD REL, it pitches. I've about tried everything at this point: instant vs center trim, holding and releasing vs pressing trim when in position, various combination of trim hat and CD REL etc. EA bug or am I not understanding something about the 'copter/flight computer? Thanks for any assistance
Tholozor Posted August 30 Posted August 30 Check the position of the Longitudinal Cyclic Trim indicator on the INST page for the rotors. Once it's maxed out, the flight control system has no more authority in that direction. You can read more about the LCTs here: REAPER 51 | Tholozor VFA-136 (c.2007): https://www.digitalcombatsimulator.com/en/files/3305981/ Arleigh Burke Destroyer Pack (2020): https://www.digitalcombatsimulator.com/en/files/3313752/
unicorndog Posted August 30 Author Posted August 30 (edited) It definitely happens once the LCT is maxed. I have only vague understanding, mostly from watching that video several times, that the it tilts the rotor heads so you don't have to have such a tilted attitude. Obviously, once its fully extended, it can't support more speed, but I'm not clear on why this should max out the force trim that every other DCS helo (with no LCT) has preventing it from maintaining altitude with a more nose down attitude. Edited August 30 by unicorndog
Ornithopter Posted 7 hours ago Posted 7 hours ago (edited) I've been keeping my eye on this thread, and was suprised there was no discussion about it. I am a novice at the CH-47, but I've noticed this as well. And I'm thinking, "wait, the Chinook shoud be much faster than this!" The LCT becomes saturated at around 140 Knots. Now, it's not like I'm Mr. Helicopter here or anything, but my guess is that once the fuselage starts to pitch down, it becomes a bit unstable. 140 knots is like 260 kph. The Hind, the Hip and the Hokum are also considered fast helicopters, and they are rattling your teeth out at that speed. It would be interesting to hear what somebody that actually knows what they're talking about weigh in on this. Edited 7 hours ago by Ornithopter Hokum, not Havok
dahui Posted 5 hours ago Posted 5 hours ago im flying 160 - 180 without any issues. Im Trimming with the Force Trim
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