Jeepyb Posted October 10, 2015 Posted October 10, 2015 Is anyone able to trim this thing correctly ? It seems like it just can't be done. Looks like hitting the trim keys has to big of an incidence on the trim of the aircraft, which makes it close to impossible to find a sweet spot to maintain a specific altitude or vertical speed... Is this a bug ? [sIGPIC][/sIGPIC] Callsign: BUNZ https://www.5vwing.com/
TheWHite Posted October 11, 2015 Posted October 11, 2015 Sure hope it's a bug. It is very hard to trim proprely.
dotChuckles Posted October 11, 2015 Posted October 11, 2015 Glad it's not just me ;-) could be that's how it is though. [sIGPIC][/sIGPIC]
WildBillKelsoe Posted October 11, 2015 Posted October 11, 2015 What is your sequence for setting trim? Because I think your method may be wrong. AWAITING ED NEW DAMAGE MODEL IMPLEMENTATION FOR WW2 BIRDS Fat T is above, thin T is below. Long T is faster, Short T is slower. Open triangle is AWACS, closed triangle is your own sensors. Double dash is friendly, Single dash is enemy. Circle is friendly. Strobe is jammer. Strobe to dash is under 35 km. HDD is 7 times range key. Radar to 160 km, IRST to 10 km. Stay low, but never slow.
dotChuckles Posted October 11, 2015 Posted October 11, 2015 What is your sequence for setting trim? Because I think your method may be wrong. Set power, change pitch, trim out force for new attitude. Any input would be appreciated! [sIGPIC][/sIGPIC]
vladd148 Posted October 11, 2015 Posted October 11, 2015 Try attitude, power, trim for climbs and power, attitude, trim for descends.
Pikey Posted October 12, 2015 Posted October 12, 2015 I found the trim increments quite rough too, same as the F-15C. Is the trim linked to your stick curves? ___________________________________________________________________________ SIMPLE SCENERY SAVING * SIMPLE GROUP SAVING * SIMPLE STATIC SAVING *
dotChuckles Posted October 12, 2015 Posted October 12, 2015 Try attitude, power, trim for climbs and power, attitude, trim for descends. Tired it. No difference. When you get close to being trimmed out at level flight one click up is too much as is one click down. I wonder if in the 39 if the trim switch is progressive rather then digital. I can't imagine the real airframe has such a granular trim. Wonder if someone from ED could comment comment? [sIGPIC][/sIGPIC]
vladd148 Posted October 12, 2015 Posted October 12, 2015 Tired it. No difference. When you get close to being trimmed out at level flight one click up is too much as is one click down. I wonder if in the 39 if the trim switch is progressive rather then digital. I can't imagine the real airframe has such a granular trim. Wonder if someone from ED could comment comment? Asked one of my friends from work who is more familiar with these trainers. He pointed out that a) this aircraft does not normally require much trim, and b) it is actually quite difficult to properly trim this out despite the fact that it requires little trimming; harder than say any other slower trainers. Also, any trimming in DCS world is not really realistic per se, unless you have a proper force feedback stick with electric trim.
Pikey Posted October 12, 2015 Posted October 12, 2015 I would 'expect' the same, the only planes I've flown sat very level and wanted to stay there. I'm sure someone would know here personally though. Asked one of my friends from work who is more familiar with these trainers. He pointed out that a) this aircraft does not normally require much trim, and b) it is actually quite difficult to properly trim this out despite the fact that it requires little trimming; harder than say any other slower trainers. Also, any trimming in DCS world is not really realistic per se, unless you have a proper force feedback stick with electric trim. ___________________________________________________________________________ SIMPLE SCENERY SAVING * SIMPLE GROUP SAVING * SIMPLE STATIC SAVING *
vladd148 Posted October 12, 2015 Posted October 12, 2015 I would 'expect' the same, the only planes I've flown sat very level and wanted to stay there. I'm sure someone would know here personally though. I can tell you the CT-155 Hawk (Canadian Forces BAE Hawk 115) is also a bit of a pain in the ass to trim. Whereas the Harvard 2 turboprop trainer (Texan II) is an absolute breeze.
frumpy Posted January 20, 2016 Posted January 20, 2016 I find the trim is being too sensitive. Trying to be stable and level and read the map, however after 20s I find myself in a climb or dive.
grunf Posted January 20, 2016 Posted January 20, 2016 I find all DCS planes trim too sensitive. Usualy after I trim as best as I can, I either adjust the throttle a bit to keep the plane in level flight.
frumpy Posted January 21, 2016 Posted January 21, 2016 Can I change the trimming sensitivity by adjusting the axis curves? Or maybe use an external program to change the repeatition speed of the keyboard and map it to a joystick button?
OnlyforDCS Posted January 21, 2016 Posted January 21, 2016 Frumpy, you can fine tune your trim by using the throttle. This is how real pilots do it anyway. More power == Nose up, less power == Nose down. Current specs: Windows 10 Home 64bit, i5-9600K @ 3.7 Ghz, 32GB DDR4 RAM, 1TB Samsung EVO 860 M.2 SSD, GAINWARD RTX2060 6GB, Oculus Rift S, MS FFB2 Sidewinder + Warthog Throttle Quadrant, Saitek Pro rudder pedals.
Goblin Posted January 21, 2016 Posted January 21, 2016 When flying for real you trim your pitch for speed. This means, when your aircraft is trimmed out and you pull the stick and let go, the aircraft will porpoise until it levels off again, at the same speed. Also, if you reduce thrust, the aircraft will pitch down to keep the speed up. Opposite if adding thrust. So basically you set the thrust (or power if you have a propeller A/C) and then pitch until you have a stable pitch and speed configuration you want to fly. Then you trim out any stick forces. Now you will still have to make minute stick corrections even if you have trimmed out your stick forces. Changes in relative wind. Air pressure (due to change in altitude and/or temperature) will make the forces acting on your aircraft change all the time. It will also affect your engine performance. And of course, there will always be linkage play in your controls. Real flying is never as static as in a PC simulator. :)
jimcarrel Posted January 22, 2016 Posted January 22, 2016 It is a shame that all can not experience taking the controls of an aircraft. Then all would know that there is no perfect trim.............. it's not possible. Win 10 64 bit Intel I-7 7700K 32GB Ram Nvidia Geforce GTX 1060 6gig
frumpy Posted January 23, 2016 Posted January 23, 2016 I only have a few hours in single engine props, but I know I can trim them hands-off. Doesn't a L-39 have positive stability too?
Goblin Posted January 23, 2016 Posted January 23, 2016 I only have a few hours in single engine props, but I know I can trim them hands-off. Doesn't a L-39 have positive stability too? Only for a little while. If you trim out the aircraft to fly, as you say, hands off, and then let go of the controls, the aircraft will eventually become out of trim again. Now, it will take longer in a Cessna 172 than in a L-39 for this to happen. The Cessna will enter an area with different winds, for instance, and perhaps pitch up slightly. Speed will decrease and the nose will pitch down and speed will increase again. This is typical for stable aicraft. To avoid this you will have to control the aircraft by primary controls or change trim. Trim isn't meant to be some sort of poor mans autopilot. You trim out any excess forces on your controls so you don't have to fight the trim forces all the time.
badbud Posted February 14, 2016 Posted February 14, 2016 Full nose down trim on takeoff, and nose wheel lifts of runway by itself before any back pressure on stick. At any high speed flying with full nose down trim, forward stick pressure is always required in my simulated L-39 to maintain level flight. Not right says my "real world" L-39 pilot friend who gave my DCS L-39 a test flight. Hopefully, this is a bug and will be fixed! badbud
Recommended Posts