investigating Dive Speed Limit Exceeds Mach 1.1

[SignorMagnifico]

In the current DCS version 2.9.16.10523 I noticed that I'm able to dive the Sabre at full throttle from 30,000ft, exceeding Mach 1.1, and I can recover from the dive without the use of air brakes. I haven't flown the Sabre in a while, but I recall that normally during steep dives, I had to deploy the airbrakes to ensure I could pull out of the dive. Additionally, there seems to be weird vibrations going on at the wing tips once it exceeds Mach 1.0. Track file attached.

F86MachTest.rar

[SignorMagnifico]

I guess this is correct as is? No control loss seems to be happening during high speed dives.

[BIGNEWY]

Hi, 

there has not been any changes to the flight model, 

but we will check with the team. 

thank you 

[SignorMagnifico]

On 6/27/2025 at 5:49 AM, BIGNEWY said:

Hi, 

there has not been any changes to the flight model, 

but we will check with the team. 

thank you 

Thank you for looking into it!

[NineLine]

Hey, I have asked the team about this, but I also tried myself, and I do get the expected low responsivness of the ailerons with the uncommanded roll, but I am able to pull out ok, but I do not recall this being an issue perviously either, so right now I am seeing the problems excpected with flight controls. 

I will see if the team comes back with anything on this. 

[Dragon1-1]

Should there even be a loss of control? The F-86F has an all flying tail, which means the elevator should remain effective at supersonic speeds. Just how effective is another matter (and there's also a matter of the maximum G load), but it shouldn't lock up like a conventional tail.

[NineLine]

18 minutes ago, Dragon1-1 said:

Should there even be a loss of control? The F-86F has an all flying tail, which means the elevator should remain effective at supersonic speeds. Just how effective is another matter (and there's also a matter of the maximum G load), but it shouldn't lock up like a conventional tail.

I don't think so, I think it's ok as is right now, but it's been a minute since I messed much with the Sabre so I have asked for confirmation with the team.