F-15 "How to maneuver " help !!!

[GGTharos]

The reason you're experiencing this is two-fold, IMHO, but cofcorpse can better explain if he sees this thread and feels like doing so :)

 

1) The FM has a bit of instability at those parameters, but it should not. This is being looked at.

2) The ARI (Aileron Rudder Interconnect) will add rudder when you deflect the stick, but if the schedule for the ARI is not correct, the rudder will throw you into an un-commanded roll. This is also being looked at.

 

Thank you very much , I think you understand exactly what im saying .

 

What you instructed is what i naturally do because it goes into violnce turn to the right and left . i will follow what you said , thank you very much . At least i know that im not doing somthing wrong. :thumbup:

[Exorcet]

No im not pulling too hard , The AoA is barely above 30 degree unless that's considered too hard but once again i did the same thing in the SU-27 and it works fine , Not only that the Su maneuvers at any given speed be it slow or fast .

 

Just a quick point, the F-15 displays units AoA, not degrees. Units = degrees + 10 I think.

 

Its perfectly normal, The F-15 is not the best maneuvering aircraft around

I very strongly disagree. It's near the top when it comes to agility. Not the absolute best, but there isn't a fighter that would take a dogfight with the F-15 less than seriously.

 

as its more orientated towards speed.

The F-15 was build to achieve speed and maneuverability, not one or the other.

 

The faster you go the less it wants to turn and if you are fully loaded with weapons and fuel its pretty much just a ballistic rocket at high speed and altitude.

Speed increases willingness to turn. The FCS will keep you from deflecting the stick to dangerous levels which makes it feel like turning drops with speed, but turning performance, aerodynamically is basically ever increasing.

 

Manoeuvring is always a trade off between speed, altitude and energy. To turn tight you want thick air, low speed, and high energy provided by the engine thrust.

I'm not sure I'd agree with the low speed part, though it really depends on the specific situation. At very high speed turn rates drop, but it's not because the control surfaces are less effective.

So to help you with your issues, we would need a lot more info so we can pinpoint what is going wrong. The easy way to provide info is to just save, and post a track, and then we'll be able to pick over the problem and give you more meaningful help.

I agree here, I'm not sure what the issue is. The F-15 maneuvers well for the most part in my opinion.

 

 

Thank you very much , I think you understand exactly what im saying .

 

What you instructed is what i naturally do because it goes into violnce turn to the right and left . i will follow what you said , thank you very much . At least i know that im not doing somthing wrong. :thumbup:

 

Do you mean roll at high AoA? This is normal, though I think one of the recent patches may have causes a problem in this area that exaggerates the effect. I've only just now updated to the latest patch and haven't flow the Eagle hard.

[bear.is.flying]

Try kicking in some rudder especially at low speed / high AOA. Watch the slip indicator on the ADI.

[Svend_Dellepude]

The reason you're experiencing this is two-fold, IMHO, but cofcorpse can better explain if he sees this thread and feels like doing so :)

 

1) The FM has a bit of instability at those parameters, but it should not. This is being looked at.

2) The ARI (Aileron Rudder Interconnect) will add rudder when you deflect the stick, but if the schedule for the ARI is not correct, the rudder will throw you into an un-commanded roll. This is also being looked at.

 

nobody wants to explain anything. I too have posted about this issue many times in different threads.

Try turning CAS off, go inverted and watch the nose climb up to Angels 25.

This FM has so much downforce that it probably could do a decent lap against a F1 car on the Monaco circuit.

[ttaylor0024]

Speed increases willingness to turn. The FCS will keep you from deflecting the stick to dangerous levels which makes it feel like turning drops with speed, but turning performance, aerodynamically is basically ever increasing.

 

 

I'm not sure I'd agree with the low speed part, though it really depends on the specific situation. At very high speed turn rates drop, but it's not because the control surfaces are less effective.

 

Turn radius increases with increase in speed. One could call this increase in turning radius a decrease in turning performance. This is exactly the reason you can't out-turn a 400kt bandit while you are going 500kts with G being equal between aircraft

[Mike5560]

Ideal turning performance is around 425-450 knots. Many fighters say "speed equals life" in general. You might not have the best turn rate on your first turn of a dogfight going 550 kts (and certainly large turn radius), but you will have more energy left over than from starting at 425 kts.

[GGTharos]

350-420.

[dadunn1700]

I know this post is old. But I'm wondering if the guy checked his joystick mapping. For some reason DCS put rudder control on my joystick to a parameter I could not figure out. Something like JoyRZ or something like that. Wondering if that was the issue. That would surely screw up the handling characteristics of any aircraft.

[ShadowFrost]

350 Kts is the slowest you want to go before you are below your corner speed and start to risk a stall if continued full back pressure is applied on the stick.

[pr1malr8ge]

OP/Post date just seen. Think It's best to remove what I just typed

Edited January 13, 2016 by pr1malr8ge

[Sweep]

Y'all may want to check the post dates.

[GGTharos]

Yeah I was about to say. These are more than a year old posts.

[ShadowFrost]

Lol, someone must have been looking really hard to find this forum and reply to it... Glad I didn't go and grab performance data and etc.

[simo1000rr]

Since someone has brought up my original post that I posted a year ago so I should clarify it. I believe it was a joystick issue because 2 months or so after I posted my question I ordered a Thrustmaster Warthog and to my surprise the input of the TMWH was so percsie that the problem disappeared BUT I would want to add that with the F15 when ever im applying Rudder to the aircraft it tends to Roll which only happens with the F15 , I tried the same with the mirage and the Rudder input never tend to roll the aircraft it only sway it sideway but with the F15 it rolls when I use the rudder . Im using a VBK t-Rudder MK-III so im sure im only using Rudder input and no roll input is being applied. So im wondering now if that how its with the F15 that Rudder control also apply some roll to the wing.

[GGTharos]

When you apply rudder, you force a yawing motion - this causes one wing to 'swing forward' ... more to the point, it increases the velocity of this wing, and causes it to produce more lift, while the other wing's airspeed is decreased, causing reduced lift. With this difference in lift, you get roll.

 

The F-15 has this done correctly, the Mirage does not, but it will be corrected.

[JINX_1391]

Lol, someone must have been looking really hard to find this forum and reply to it... Glad I didn't go and grab performance data and etc.

 

The necro-find was the users first post. Decides this is what I need to chime in on, a year later, and almost gets it right with his suggestion. Wizardry!

[WildBillKelsoe]

don't pull too hard on stick and develop muscle memory from continuous flying. 1 year daily flying is what you need

[GGTharos]

Try one week.