f-15 vs su-27 flight characteristics

[steve2112]

so i've been running a few tests in the su-27 at vegas with 5217kg fuel, no weapons. i've added the .miz file if anyone wants to try.

 

in a sustained horizontal turn, i can get 450m radius at about 360-400kph in normal mode and 400m radius at about 320kph in directly control ON mode. (all tests at full power)

 

i can't tell a difference with the W key.

 

i'd be interested to hear if anyone can get a better radius than that and how?

turntest1.miz

Edited January 7, 2016 by steve2112

[Sweep]

You won't see a difference with the W key unless you're at high AOA (i haven't tried your mission yet, don't have time).

[steve2112]

i really like direct control now, it's basically 11, really helps me get the gates. i have it right under my thumb, for when, you know, 10 just isn't enough.

[LuSi_6]

don't use the "W" key for turning, you will find yourself with no energy low and slow very quickly. Use it only for a lead turn to point your nose to get a launch with the R-73 or a gun kill.

 

Use it as a kind of "nose pointer"

[ineth]

don't use the "W" key for turning, you will find yourself with no energy low and slow very quickly. Use it only for a lead turn to point your nose to get a launch with the R-73 or a gun kill.

 

Use it as a kind of "nose pointer"

 

Since energy conservation is going a long way with me, this was my plan to begin with, though i love taking a bird on high Alphas occasionaly. And the Su is just the bert for that bussiness

[Ironhand]

thanks, for super tight turns in the su-27, what the best airspeed and should i use flaps? (assuming no weapons and half full tanks)?

 

thx

Things like turning off FBW, etc aside, you'll get your tightest, fastest turn at the slowest speed that will allow you to put maximum Gs on the airframe. It's called the corner speed and it'll vary with aircraft weight and altitude. If you're only interested in the tightest turn you can make, then the slower you go, the tighter the turn.

Edited January 7, 2016 by Ironhand

[steve2112]

Things like turning off FBW, etc aside, you'll get your tightest, fastest turn at the slowest speed that will allow you to put maximum Gs on the airframe. It's called the corner speed and it'll vary with aircraft weight and altitude. If you're only interested in the tightest turn you can make, then the slower you go, the tighter the turn.

 

right, same as your car really, you don't usually take a mini roundabout at 70mph.

 

i find the SU-27 settles down to about 280-300kph in a tight sustained turn at full power with direct control. if i back off the power, i loose too much speed and fall out of the sky.

[Stuge]

right, same as your car really, you don't usually take a mini roundabout at 70mph.

 

i find the SU-27 settles down to about 280-300kph in a tight sustained turn at full power with direct control. if i back off the power, i loose too much speed and fall out of the sky.

 

But of course! You always use full afterburner if you want maximum performance. Cutting the power at any point means lost energy, so the reason for doing that better be good ;)

[Stuge]

Oh, and it does turn horizontally at below 250 km/h. Like this! (complete with a close call and an emergency landing :D)

 

You can get a little more stick pull by making sure the trim is fully back!

Minimum Speed Turn.trk

Edited January 8, 2016 by Stuge

[steve2112]

cool landing! so you are down to 220kph with a lot of nose up. i'll try it, thx.

 

so are you using trim and direct control here?