MiG-21 1.5.4 Major Upgrade & Changelog

[Buzzles]

Need to do more flying, but I'm liking the FM changes.

 

Definitely much more like some of the older versions, and feels a bit more skiddier!

[Harle]

AoA lock is gone at last. Although I'm no expert in aerodynamics, I like this new FM a lot. The plane is a fun to fly now.

[wumas0201]

In this new FM, I found that rolling right is faster than rolling left in the same condition(speed and altitude).

Why??

Edited June 25, 2016 by wumas0201

[Neuman]

The new aerodynamics are good, But it seemed to me that the effectiveness of the Elevator at low speed too high. At low speed instead of lowering the nose down the plane may have to fly at high angle of attack, very slowly decreasing in height.

While In this mode there is no hesitation roll, the shaking, the plane is flying quite calmly, in my opinion it is wrong.

 

It looks like a 4-generation fighter, the su-27. But on our (ingame) MiG-21 angle of attack even more. The su-27, this is possible through more advanced aerodynamic design. How does the MiG-21 with its small triangular wings is a mystery to me.

 

Su-27 at 210 km/h

 

Edited June 25, 2016 by Neuman

[Harle]

it seemed to me that the effectiveness of the Elevator at low speed too high

 

The lower the speed, the higher the deflection of the evevator. That's how ARU works.

[Neuman]

The lower the speed, the higher the deflection of the evevator. That's how ARU works.

 

If the ARU gave such efficiency rudders it's just great, but the loss of height and speed( in such conditions of flight) in my opinion should be more and the stability in roll while less. But that only my opinion.

 

in any case, the current version of FM is very good and if add to the current flight model part of the behaviour at low speed as it was in the late 2015 would be absolutely perfect.

Edited June 25, 2016 by Neuman

[zerO_crash]

If the ARU gave such efficiency rudders it's just great, but the loss of height and speed( in such conditions of flight) in my opinion should be more and the stability in roll while less. But that only my opinion.

 

in any case, the current version of FM is very good and if add to the current flight model part of the behaviour at low speed as it was in the late 2015 would be absolutely perfect.

 

Remember, it´s not about what "we" expect it to behave like, but how it does in real life. Not saying you are wrong necessarily, but I do believe in what dev`s make ;) After all whenever I compare it to real life videos, both from inside the cockpit as well as outside, it matches spot on.

[EricR]

Hey Humpdtydumpty, You are in luck. As one of rhe VA admins. We all agreed to set up a separate server for the beta update. We will keep the stable and the beta up for one week. For those of you that fly 2.0. 2.0 will be closed. Hit us up on facebook or the VA website if you may have any questions. Oh by the way. My call sign in the VA is Wolf

Edited June 25, 2016 by EricR

[Neuman]

Remember, it´s not about what "we" expect it to behave like, but how it does in real life. Not saying you are wrong necessarily, but I do believe in what dev`s make ;) After all whenever I compare it to real life videos, both from inside the cockpit as well as outside, it matches spot on.

 

Yes, I absolutely agree. The artist knows better what should be the picture. His picture.

[Rainbowgeorge]

Has the R60M been changed to all-aspect missile?

Well, theyve said it, but i cant test it .... would be nice if somebody could confirm

[Blackjackk]

As soon as I get home tomorrow I will test it for you.

[Rainbowgeorge]

As soon as I get home tomorrow I will test it for you.

 

Than you mate

[CoBlue]

-----------------------------------

Edited July 20, 2016 by CoBlue

[Hyperion35]

There appears to be a problem with the kneeboard in the 1.5.4 beta update. It only shows the pages that have the current mission waypoints, but it does not show the runway information or the maps with the ARC stations.

 

I've reported this on the bugtracker with full repro. Issue is number 0000369 and the bug report itself can be found here:

 

https://leatherneck-sim.mantishub.io/view.php?id=369

 

I'm concerned because the files for the images themselves appear to be in the correct folder within the DCS: World installation, but when I check the kneeboard in the cockpit during a mission, those pages in the kneeboard are simply transparent

[jeffdude]

AoA lock is gone at last. Although I'm no expert in aerodynamics, I like this new FM a lot. The plane is a fun to fly now.

 

Wow, you are correct. The 1.5.4 Mig-21BIS is a beast! I love the way this thing flys in all the regimes I am able to put her in. This is fantastic. I got a massive boost in frames in this version compared to previous patches. This is just fantastic. Thanks LN, your team really pulled it off with this release, a job well done.

 

I would love to test it in some online combat, but there aren't many servers ready for the beta fun at this point. A few flights on the aerobatics server were fun though.:v:

[bkthunder]

I gave it a spin and tried to stall the aircraft.

So basically this is what happens to me:

 

I pull the stick > exceed AoA > aircraft is "stuck" in high alpha condition and depending on engine settings, it will descend or maintain altitude. It's very stable and doesn't tend to snap left or right, it just keeps flying in high alpha without problems. This goes on indefinitely as long as I keep the stick fully back.

 

> let go of the stick > airplane "bounces back" to (almost) perfectly level flight without any input.

 

In other words, no departures.

Is this realistic?

[humptydumpty]

I updated to 1.5.4 beta , I am a little less in the gray matter area, what should I test for in this monster ?

Edited June 26, 2016 by humptydumpty

[Mokkeri]

I gave it a spin and tried to stall the aircraft.

So basically this is what happens to me:

 

I pull the stick > exceed AoA > aircraft is "stuck" in high alpha condition and depending on engine settings, it will descend or maintain altitude. It's very stable and doesn't tend to snap left or right, it just keeps flying in high alpha without problems. This goes on indefinitely as long as I keep the stick fully back.

 

> let go of the stick > airplane "bounces back" to (almost) perfectly level flight without any input.

 

In other words, no departures.

Is this realistic?

 

I quote from book. Author Jyrki Laukkanen Finnish test pilot, 732hours in Mig-21bis."The aircraft is very spin resistant and it is hardly possible to get into any post stall gyrations without positively applying full rudder and full aft stick at high angle of attack; this makes no sense anyway. We never spun the aircraft accidentally or intentionally either. There is no need for this kind of maneuver and so no need to practice it."

[humptydumpty]

Oh no , don't tell me headtracking is broken in this update, it was working fine in 1.5.3 but in 1.5.4 it is not in the 21, though it works in the L-39 , Sabre etc..., damn being a Sunday I wanted to so fly this baby but with the head tracking not working properly its not enjoyable.

 

I am using opentrack BTW.

[Neuman]

I quote from book. Author Jyrki Laukkanen Finnish test pilot, 732hours in Mig-21bis."The aircraft is very spin resistant and it is hardly possible to get into any post stall gyrations without positively applying full rudder and full aft stick at high angle of attack; this makes no sense anyway. We never spun the aircraft accidentally or intentionally either. There is no need for this kind of maneuver and so no need to practice it."

 

Yes indeed the plane is resistant to the spin and is easily inferred from it. It is written in the memoirs of the test-pilots. At high angles, near-zero speeds, the plane just falls down like a leaf.

 

But I have my doubts that the aircraft can continue flying almost straight without losing speed and altitude at high angles of attack. Because in this case the bottom of the plane works as an aerodynamic brake.

[bkthunder]

.

But I have my doubts that the aircraft can continue flying almost straight without losing speed and altitude at high angles of attack. Because in this case the bottom of the plane works as an aerodynamic brake.

 

Exactly this. The delta wing does generate more lift at high AoA, but it also generates a lot more drag which in turn requires a very good T/W ratio.

Anyway, maybe the Mig-21 really did have high alpha performance on par or better than, say, an F-18. Surely it is not something the 21 is famous for.

[humptydumpty]

Yes that nose should drop and roll on either side on the high alpha I think. But who am I to argue I am not a real pilot :(

[Harle]

Oh no , don't tell me headtracking is broken in this update, it was working fine in 1.5.3 but in 1.5.4 it is not in the 21, though it works in the L-39 , Sabre etc..., damn being a Sunday I wanted to so fly this baby but with the head tracking not working properly its not enjoyable.

 

I am using opentrack BTW.

 

Try editing options.lua as instructed here http://forums.eagle.ru/showpost.php?p=2821462&postcount=2459

 

Worked for me.

[humptydumpty]

Try editing options.lua as instructed here http://forums.eagle.ru/showpost.php?p=2821462&postcount=2459

 

Worked for me.

 

Thanks for the link, but I copied the 2.0 .lua and it works :) my mig flies so nice

[Mokkeri]

Yes indeed the plane is resistant to the spin and is easily inferred from it. It is written in the memoirs of the test-pilots. At high angles, near-zero speeds, the plane just falls down like a leaf.

 

But I have my doubts that the aircraft can continue flying almost straight without losing speed and altitude at high angles of attack. Because in this case the bottom of the plane works as an aerodynamic brake.

 

No you can't maintain zero vertical speed after critical AoA. Not possible even with full afterburner.

deepstall.trk