FM in 1.5.5

[BadHabit]

Had some free time to fly the mig after the update to notice that the FM is once again changed and not and inch to the good side.

Apart from over sensitive control surfaces and some other innacuraties that I am not qualified to comment on. The worst is the wing rocking behaviour that is implemented verly poorly. At 750km, medium alt perfoming a right hard sustained turn about 6g's, I progressivly let the AOA climp to critical and then the AC starts stalling violently. First the wing stalls, then the left wing stalls, the up,left then hard right then hard left again whilst no physics are taken in mind. Unaturall and weirdy akward style. I can't provide a track or post a acmi log. Just anyone interested try to replicate this: At 750km, medium alt perfoming a right hard sustained turn about 6g's, I progressivly let the AOA climp to critical, dont push the stick to stall it let it reach the critical AOA.

[humptydumpty]

Hmm I am not sure if i have noticed the CAOA at that speed around 3000m with a sustained turn @6g's , are you in a clean config ?. I do have a lot of wobbling during approach but that could be due to my stick extension.

 

But i will try it tonight on the VA Server.

 

About the FM i think she flies better ?

[Pocket Sized]

I like the FM, it matches some of the reports I've heard about the fishbed's unhappiness at high AoA. Particularly how she "violently departs" if there's sideslip in certain conditions.

 

If you carefully load the aircraft and keep it straight it will stall just like before. If you don't stop the roll before pulling things get nasty, quickly. Manipulate one axis at a time.

[BadHabit]

I have ni problem handling the aircraft. I try to.represent the weird physics involving in the stall flight regime of particullary the right wing in the conditions I gave above. The plane is acting like a kyte in a thunderstorm bashing around invisible walls. Its ridiculous. My installation is pure and vanilla the tests are made on vague missions. I use curves like before and like every ac i own.

 

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[BadHabit]

I have ni problem handling the aircraft. I try to.represent the weird physics involving in the stall flight regime of particullary the right wing in the conditions I gave above. The plane is acting like a kyte in a thunderstorm bashing around invisible walls. Its ridiculous. My installation is pure and vanilla the tests are made on vague missions. I use curves like before and like every ac i own.

 

Sent from my HUAWEI G510-0100 using Tapatalk

Dont make me "Ni" you again

 

Sent from my HUAWEI G510-0100 using Tapatalk

[humptydumpty]

Will try it later tonight. I do have one irritating thing is that she keeps rolling right.

[BadHabit]

Yeah it does.

 

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[Art-J]

Have to admit with BadHabit here. Although I applaud various rolling effects being introduced in late 5.4 and current 5.5 versions (compared to 5.3, which didn't drop wing, even during spins), the departure during right turn is very violent and doesn't quite fit 8+ ton airframe ("kite in the thunderstorm" is a good comparison). What's more puzzling is the fact that it only happens in right turns, no similar effect in left ones at all (?)

 

I wonder if it's related to another intermittent effect I've noticed in the form of the plane slowly rolling to the right by itself (with a rate of ~1 degree per 3-4 seconds), with all controls perfectly centered (and controllers well calibrated). I still haven't narrowed down exact conditions when that happens, but it sure is questionable. I remember some users reporting this effect back in the times of 1.2.x with certain loadouts, maybe it's back again?

[Pocket Sized]

I've noticed the slow right roll to be present in nearly all flight regimes, it's just more noticeable in some conditions.

 

But yes, the roll reversals are obviously exaggerated sometimes. I'll have to get around to making a quick video on it at some point.

[grunf]

I've never had rolling to the right unless I had asymmetrical load, even if it's just a case of less than full gun ammo load.

 

The last time I noticed the MiG rolling to the right was a few days ago on VA server, and it was because there was no gun ammo. Once I fully loaded the ammo, she was flying straight and level.

[humptydumpty]

I've never had rolling to the right unless I had asymmetrical load, even if it's just a case of less than full gun ammo load.

 

The last time I noticed the MiG rolling to the right was a few days ago on VA server, and it was because there was no gun ammo. Once I fully loaded the ammo, she was flying straight and level.

 

I am on that server but they don't allow weapons hence I fly her in the default server config. Don't know if they do allow just loading them. Will check it up though.

[cro_mig_21]

The last time I noticed the MiG rolling to the right was a few days ago on VA server, and it was because there was no gun ammo. Once I fully loaded the ammo, she was flying straight and level.

This, I also notice this effect only when the gun ammo is empty or when I select 0 rounds in ME. Maybe the ammo stowage is off-center..

[grunf]

This, I also notice this effect only when the gun ammo is empty or when I select 0 rounds in ME. Maybe the ammo stowage is off-center..

Yeah, I think it's behind the cockpit, above the left wing.

[humptydumpty]

Confirmed the roll stops if the ammo is filled just tried it on Aerobatics Online Server , not yet tested the sustained right turn will do so later.

[Pocket Sized]

That would explain a lot.

 

I spend a vast majority of my time in the fishbed on the aerobatics server so I rarely fly with gun ammo loaded. Had no idea it was off center.

[Art-J]

I've just done a short off-line flight in clean config. The results are inconclusive:

 

a) ammo full - between IAS of 650-700, trimmed for level flight, when the plane is centered or slightly banked to the right, it rolls right very slowly (a degree every few seconds). But when flying with a little bit of left bank, it starts rolling left, equally slowly.

b) fired all ammo away - now in the same conditions the effect got even worse indeed, with right roll reaching figures of 1 degree/sec.

 

Ammo storage is off-center indeed, but not THAT off-center, as seen on the schematic below. The whole supply is located in the fuselage, the ammo box is on the left (12 & 6), while the belt goes through the feeding chute around the engine on the right (1) and empty links go back to the links box on the left (7). Would the ammo weight differences have such a noticeable impact on lateral stability of the plane? Don't know, but If it did, I'd expect it to be mentioned in the real manual of the plane.

[humptydumpty]

Tied the sustained turn at around 12000 ft AGL , what I noticed is she spins on the right wing and I don't think this was there b4.

 

But I could not maintain the sustained turn because my joystick roll is very sensitive.

[BadHabit]

Try not to roll in the turn. It's a hard right bank turn. 90 degress roll to the side start pulling to 6g's sustained turn. Roll neutral (well I did some small corrections to try and keep the ac level) and entry speed about 700-750 at about 3-5 km alt.

 

EDIT: Ok just runed some more tests. I failed to reproduce the bug at medium alts. So I switched to lower alts and I provide you all with my trk file. It works fine from my side and should solve questions. Plus in the start you will see me staring at the throtle quartant cause I noticed that the lever is at 3/4 of MilPower but the RPM is full and AB engaged. Just a small notice.

Edited November 17, 2016 by BadHabit

[humptydumpty]

Well will it later again. I am not sure what curves should I be setting for Pitch / Roll as i have a 2 feet extended stick. If I don't set the curves maybe I will pull too much on that turn.

[BadHabit]

Well will it later again. I am not sure what curves should I be setting for Pitch / Roll as i have a 2 feet extended stick. If I don't set the curves maybe I will pull too much on that turn.

 

My curves for pitch in the test is 10 and 45 for roll. Pitch seems to not need curves, curves made pitch movement very unstable.

[humptydumpty]

My curves for pitch in the test is 10 and 45 for roll. Pitch seems to not need curves, curves made pitch movement very unstable.

 

 

Yes the pitch not needing any curves I have noticed. But my problem is set any curves for the roll then either she is hypersensitive above 700 km/h or she hypersensitive on approach and landing. I am still trying to find the roll curve balance. Surely can try with 45 for roll

[humptydumpty]

Still at home so just tried it. but i am not still able get the sustained turn, let me try again.

[humptydumpty]

I think she wobbles a lot

[humptydumpty]

Ok what I noticed was the left wing going wobbly and then the right , was around 5000 AGL speed was about 780 gave a 90 AOB gave back pressure to give a G turn

[BadHabit]

Yeah In the trk you can see that I even blacked out. The stall and spin entrys are correct I believe, the revocery "animation" is the problem, just to be clear. I am not saying it should not stall or how it should stall. I am commenting at the bashing us I keep the elevator full deflection at the stall and after I put it at neutrall to let her stabilize.