Mig-21bis is now faster then Mirage-2000C In 2.0

[Brisse]

With the mirage in this patch there is no possible way to go pass the Mach 2.07

 

Weird. I had no problem hitting Mach 2.2.

[grunf]

This is the Tacview record of my first flight after the patch. It wasn't meant to be a test so I didn't maintain perfect level flight, I was actualy turning from 20:13:00 to 20:15:00, but I had no trouble reaching M2.2. Clean configuration.

 

[cauldron]

Guys, please make proper tests and comments.

 

1. We all know the flight envelope is truncated structurally at M2.2 between 30k and 55k feet. Performance should NOT be the limiting factor for these conditions. Making a dive in clean config with probably very little fuel from 45k feet down to 42k feet is not helpful to the study. its also clear from the graph that it took a good while trying to get there too.

 

2. Optimum altitude for MACH, not speed, is ~40k feet. I just did a LEVEL flight test and it struggled to get to M2.2 at 40k feet, but it made it. It could not even break M2 over 50k or lower than 32K which it should with missiles and center tank on as well.

 

 

This is not IMO enough to claim the "M2000 makes it to M2.2 easily" nor a basis to call other peoples data points wierd when they are not even proper data anyways, nor is yours.

 

Next few days i'll be verifying the flight envelope, anyone is invited to participate - just please be rational, objective, and scientific about it. No wierd stuff ok? :smartass:

[Corsair]

Grunf, improve your climb profile.

 

Sitting at 45 kft and waiting for speed to increase is clearly not the best way to accelerate.

[grunf]

Like I said, it wasn't a proper test, just flying around. :D

[jojo]

It could not even break M2 over 50k or lower than 32K which it should with missiles and center tank on as well.

 

What makes you think it can reach Mach 2.0 with full missiles and fuel ? :huh:

[Rlaxoxo]

What makes you think it can reach Mach 2.0 with full missiles and fuel ? :huh:

 

Well the flight envelope graf it's suppose to be based off

 

[FSKRipper]

Well the flight envelope graf it's suppose to be based off

 

 

Which doesn't explain why you were not able to exceed M2.07. Tested it like grunf. Works fine on my end.

[Rlaxoxo]

Which doesn't explain why you were not able to exceed M2.07. Tested it like grunf. Works fine on my end.

 

What Seasons and what temperature at what altitude if I may ask?

 

In Nevada 2.0 right?

 

Just checking

Edited January 16, 2016 by Rlaxoxo

[jojo]

Well the flight envelope graf it's suppose to be based off

 

 

With fuel tank (RPL522) I read around M1.78 :smartass:

[Rlaxoxo]

With fuel tank (RPL522) I read around M1.78 :smartass:

 

Ah with fuel tank, sorry I misread your comment

 

Yea you're right

 

Tho that's with missiles attached as well

[jojo]

For everyone, be aware that maximum speed is a complicated topic...

 

There are different values to consider:

- aerodynamic capacity

- heat resistance (like windshield)

- operational (airframe durability)

 

When someone gives you value it's not easy to sort it out.

 

RPL541 wing tanks are operationally limited to M0.95, but it has been reported that it has been pushed to M0.99 by inadvertance without damage.

 

This is the same with all limits...

 

M2.2 value is clean aircraft for sure. Don't expect to hit this speed with missiles.

[BlackLion213]

I did some testing this morning and performance seems very much in-line with what I've read.

 

Managed Mach 2.01 with centerline fuel tank.

 

 

And Mach 2.20 after jettisoning the center tank:

 

 

I think she had more left in her, but I wanted to have enough fuel for the return. Solid high speed performance. The nature and pace of the acceleration seemed quite plausible.

 

The FM improvements are really great thus far. Also, the handling now gives the impression that the FBW is coping with the physics of the airframe (as you would expect) and the control responses seem much more realistic. I'm really enjoying it. :D

 

-Nick

[Rlaxoxo]

I did some testing this morning and performance seems very much in-line with what I've read.

 

Managed Mach 2.01 with centerline fuel tank.

 

 

And Mach 2.20 after jettisoning the center tank:

 

 

I think she had more left in her, but I wanted to have enough fuel for the return. Solid high speed performance. The nature and pace of the acceleration seemed quite plausible.

 

The FM improvements are really great thus far. Also, the handling now gives the impression that the FBW is coping with the physics of the airframe (as you would expect) and the control responses seem much more realistic. I'm really enjoying it. :D

 

-Nick

 

The Hell?

 

I can't go over 2.01 Mach with clean loadout

[GGTharos]

Are you running your mission in 'standard day'? Try with 15C OAT

[Rlaxoxo]

Are you running your mission in 'standard day'? Try with 15C OAT

 

Ya was running normal day summer 20 degrees standard no wind no clouds

[ttaylor0024]

The Hell?

 

I can't go over 2.01 Mach with clean loadout

 

 

Instant action takeoff. It could possibly get to 2.21

Edited January 16, 2016 by ttaylor0024

[LuSi_6]

yup, Mach 2.2 now at around 41k

 

new FM is very nice! great update. now IFF (even if it's a FC3 one) next!

[Teeter]

Sorry guys, another quick read through this thread and I'm still not quite seeing what's wrong. All of the behavior has a valid explanation. Maximum Mach number is not a simple correlation, and the invisible wall that is being observed is largely controlled by dynamic drag.

[Rlaxoxo]

How the hell are you guys able to hit Mach 2.2 I can't go over Mach 2.01 No matter what I try

[diditopgun]

Maximum speed I reached was Mach 2.29 in clean loadout.

[LuSi_6]

How the hell are you guys able to hit Mach 2.2 I can't go over Mach 2.01 No matter what I try

 

check a few thinks on your side:

 

latest alpha 2.0 build?

unlimited fuel checked?

how much fuel?

 

if you start with 100% fuel and the unlimited option is set you won't get Mach 2.2x

[Fer_Fer]

is the Mirage patched seperately for 1.5 and 2.0?

[Fab]

is the Mirage patched seperately for 1.5 and 2.0?

 

Yep:music_whistling:

[Rlaxoxo]

I just flew up to 70,000 feet and dove down to accelerate to mach 2.21 I was at 43,000 feet and I started to decelerate to 2.07 mach

 

I don't know what kind of fuel you guys are using I obviously can't reproduce those kind of numbers that you guys are on about.

 

Mind you I was on fumes here I barely had any fuel so you can count that out

 

I'm also flying on Summer no wind no clouds clear day 15 degrees

 

I have no idea what I'm doing wrong here

 

Clean start no loadout

 

as pier this image right here

 

 

I should have maintained the Mach way until 34k feet

Edited January 16, 2016 by Rlaxoxo