Take Off config 1.1.2.1 beta

[71st_Mastiff]

This beta patch we can not get the P51D off the ground. Settings for take off set, plane gets to around 70 to 90 mph and boom plane lurches to the left and we crash every single person in the 71st AH is experiencing this.

 

trk.

[26-J39]

I really is a matter of anticipating the darting left behavior and countering with the rudder pedal.. Does take practice.

 

Re: Trim, this works for me.

Aileron: 0 or 1 deg, not 5 deg.

Elev: 2 deg

Rudder: 3-5 deg, usually closer to 3 deg.

 

I'm sure the control & trim surfaces will be tweaked throughout the beta's but I didn't notice any major difference so far.

[sobek]

Was this from a rampstart? Did you try a start from runway too?

[MTFDarkEagle]

I haven't had a single problem taking off with both versions. What 26-J39 said is right. Anticipate it. Fly the aircraft. Things can change very quickly. You've got a stick in front of you, use it.

[Irregular programming]

Make sure to check you manifold pressure. For an easy takeoff I tend to leave it at around 40 inHg; when you've gained top speed you can just ease the throttle forward and you'll be off the ground.

[Napa]

Also making sure you trim properly can be a lot easier to takeoff. Place 4-5 degrees right trim for rudder, 0 for ailerons (unless you have crosswind) and 2 to 4 degrees Nose Heavy (NH) for Elevator depending how much fuel you have on board.

[71st_Mastiff]

Like I said we follow the manual the book which gave us the settings for take off.

 

Watch the track it happens every single time.

 

It has something to do with the rudder, we turned off auto rudder control and you give some input the rudder snaps the plane (lurching) it to the left, with very little input. :joystick:

[Double_D]

This beta patch we can not get the P51D off the ground. Settings for take off set, plane gets to around 70 to 90 mph and boom plane lurches to the left and we crash every single person in the 71st AH is experiencing this.

 

trk.

 

 

Didn't have a problem before but now...

Yes, I had that happen all night myself...everytime about to get airborne it like you say " lurches " to the left and then boom...:doh:

[Wolf Rider]

I noticed something different as well

Getting Better.trk

[MTFDarkEagle]

Can't look at the track(s) untill I'm home later today..

But as a start, try getting in the air at a higher speed. 70 mph is too low. 90 is getting there.

[G00dnight]

one other thing about trim if you have your rudder axis reversed, give it left trim not right..:joystick:

[macedk]

I actually think its easier in the new patch.

 

Overall, my first 4 attempts were lawndarts. Then i hit the manual and now its better and no more lawndarts. I'll make small track :)

 

The rudder is mega powerfull and if the plane gets more than 10 degrees off and you correct too hard, then it will be a tank slapper effect.

Edited May 8, 2012 by macedk

[Phantom88]

Have you tried tuning your rudder Axis? This helped me a lot.Have a look at YoYo's post for tips on Curvature

http://forums.eagle.ru/showpost.php?p=1444498&postcount=10

[macedk]

This beta patch we can not get the P51D off the ground. Settings for take off set, plane gets to around 70 to 90 mph and boom plane lurches to the left and we crash every single person in the 71st AH is experiencing this.

 

trk.

 

Just watched your track.

 

1. your controls are very erratic. Turn axisview on in game rshift-returnkey.

a)your ruddertrim tab is jumping. If you have it on a axis, try change to a key instead.

b) Check your all your controls for play or spiking behaviour. If jumpy at center then try abit of deadzone. If too fast try some curvature (mine for rudder is 30).

 

2. The takeoff

a) your stick is way the right, should be center and full aft to lock the tail wheel.

b)Your roll was way fast at the start. I tend to get the plane rolling and see what the plane wants to do. As you see in my track, the plane start to drift to the right due the rudder offset to the right. As i throttle up, the engine torque takes over and drifts left.

c) when it darted to the left for you. You didn't correct fast enough plus if you have wrong take off settings its impossible.

 

I post my two tracks, one with stick aft and one without.

Mace_take-off.trk

Mace_neutral stick tk-of.trk

[159th_Viper]

Like I said we follow the manual the book which gave us the settings for take off.

 

Watch the track it happens every single time.

 

It has something to do with the rudder, we turned off auto rudder control and you give some input the rudder snaps the plane (lurching) it to the left, with very little input. :joystick:

 

You are reading the wrong manual. I honestly do not know where to start explaining where you went wrong, but I'll try:

 

OK, spawn into the cockpit and leave all your trim wheels alone - aileron and elevator trim are fine at default. Start up and taxi to runway - no need to stand on the brakes in an attempt to steer as your tailwheel was locked the entire time - use the 6 degree steer to runway. Remember that the tailwheel is only unlocked forward of neutral: At neutral it is still locked.

 

Once on RW, input about 5 degrees of right rudder trim. Now slowly advance the throttle to 42-45 inHg and leave it there. Keep the aircraft aligned with rudder input only and after a while you'll feel the tail start bouncing and the plane feel light. Slight back pressure on the stick and she'll fly herself off the runway in a three-point attitude as per this post/vid:

 

Slowly advance the MP to about 42 inHg as a start and she'll fly herself off the ground close to a three-point configuration

 

pt54i1_dlys

[cichlidfan]

I, too, am seeing no significant difference between the first and second beta. I get the same pull at about the same time.

[flightace37]

I took a look at the track and came up with a couple of pointers:

 

a) Remove the weapons load for now.

b) Make sure the mission doesn't have any significant cross-wind

c) Use only 1-2 degrees right aileron trim, or none at all.

d) 2 degrees forward elevator trim

e) 0 to 4 degrees right rudder trim (I find 6 is too much)

 

You have an issue with throttle stability for sure, as others have mentioned. Get that ironed out somehow. Calibrating your controllers might do the trick, but if not, make sure they're plugged into a powered USB hub rather than directly into your computer.

 

Your takeoff roll started fine, but then experienced a pretty gradual left pull. Get on those rudders and counteract it. Hold mild back pressure on the stick to help keep the tail wheel on the ground. If you roll off into the grass, do NOT continue takeoff. Come to a stop and try again from the runway. Most grass in this sim does not make a good runway surface because of all the bumps and other variations.

 

My takeoff roll generally goes something like this, after lineup:

 

1. Hold brakes and run up engine to 20" Hg. This makes sure the suction system is supplying enough vacuum to the instruments.

2. Set the directional gyro, etc. Double check Prop control full forward. Hold stick back a good bit to lock tailwheel, and provide aerodynamic effect to keep tail on ground as speed develops.

3. Release brakes and let the aircraft start rolling on its own.

4. Increase throttle to 30" and leave it there for a while, until you develop about 30 mph.

5. Increase throttle to 45" in small increments until about 50 mph. Start adding in right aileron to counteract wing dip from torque.

6. Continue increasing throttle towards full power as speed develops.

7. Tail wheel will start flying itself off the ground between 80-90 mph if you're only holding a little bit of back pressure. Make sure to adjust rudder accordingly, as there is a difference in behavior without the wheel forces.

8. Continue holding light back pressure until the aircraft rotates to more level attitude, and lift off gently around 120 mph. For heavier loads (like the rockets you were carrying), wait until 140 mph or so. She might get extremely light and try to fly herself off the runway. If that happens, go ahead and help. Continuing with the weight coming on and off the wheels will introduce some really nasty behavior.

 

Lastly, although it may not affect your takeoff roll, make sure to set your RAM Air lever full forward. You did set the hot air lever correctly, but missed the other one.

 

Hope this helps!

[Napa]

Lastly, although it may not affect your takeoff roll, make sure to set your RAM Air lever full forward. You did set the hot air lever correctly, but missed the other one.

 

Hope this helps!

 

Ram/Filter air and Hot/normal air for Carburetor is not yet modeled AFAIK.

[MTFDarkEagle]

Ram/Filter air and Hot/normal air for Carburetor is not yet modeled AFAIK.

True, but it's good to start developing a routine for when it is modeled.

[recoilfx]

It's imperative to have your tail wheel locked when your plane hits 80-90mphs. So pull your stick all the way back during speed build up. Once you hit 100mphs, release the pressure.

 

Took me a while to realize that I shouldn't fight the torque at 80-90mph but let the tail wheel do the work. I was doing perfect 3 point landings before successful take offs. Something is fishy here...

[159th_Viper]

ItSo pull your stick all the way back during speed build up. Once you hit 100mphs, release the pressure....

 

Your tailwheel is locked at neutral- no need to pull the stick back, unless you have unlocked it and are attempting to lock it again.

 

Burying the stick in your gut at take-off is definitely a no-no and probably a causative factor of all the wrecks littering the runways.

[recoilfx]

Hmm... I guess you are right, but I think my point still stands - at 80-90mph the torque is strong enough it's best to tail solid on the ground. Only release the stick pressure once the speed is around 100mphs. Torque is very controllable then.

 

And yes, keeping the stick all the way back after 100mph will most likely result wrecks - that's why i said to release pressure after 100mphs and let the plane 'fly' itself.

Edited May 8, 2012 by recoilfx

[71st_Mastiff]

still doing the same thing rudder input is not working correctly the plane lurches to the left as soon as we get to 70 - 90 MPH. No help from my rudder pedals. as you see in the Trk the plane will not keep straight. If I even apply very light pressure on my rudder to correct right. the plane lurches to the left. All axsis are correct.

[Double_D]

Knowing that the trim model is a wip .. just letting you know from what I see while trying to takeoff is the left wing trim is up and the right wing trim is down..causeing the plane during takeoff to flip..I believe this is happening to most members at this time..but saying that its still a Beauty..thank you for the baby...

 

also note " LCtrl + T " does not reset it to Neutral..

[macedk]

still doing the same thing rudder input is not working correctly the plane lurches to the left as soon as we get to 70 - 90 MPH. No help from my rudder pedals. as you see in the Trk the plane will not keep straight. If I even apply very light pressure on my rudder to correct right. the plane lurches to the left. All axsis are correct.

Did you catch my track ?

 

Works fine here.