Simviation Forums

hello

I have got a problem i can not fix so maybe you guys can help me out

i wanna ajust the nosewheel lift-off speed off a plane but doesnt know where to do this maybe you guys can help me out

Now the plane puts its nose up by 25 knots what isnt realistic so i wanna increase it like by 90-100 i taking about the tucano

[General]
atc_type=BEECH
atc_model=T6
editable = 1
performance=Max Level Speed :

The "nose wheel lifeoff speed" also know as B1 Speed or Rotate Speed/Rotational Speed is about 120knts for a 737 and about 200-220knts for a 747 while as a small prop as a Cessna that is about 80knts. If you cant change it then just pull up when you think its at the right speed.

It sounds like your trim is out of whack...

I can't say for sure without testing the plane myself, but I'll bet if you adjust the trim down (maybe a whole bunch), the nose won't try to lift off so early..

If you need to use too much trim adjustment, the flight-model needs adjusting, starting with the CG.

Side note:

** Cessna 172s rotate at just under 60kias **


Edit:  I just looked at the aircraft.cfg file that you posted. See how many of the 'Flight Tuning' paramaters are NOT =  1.0  ?

This means that the whole aircraft.cfg needs to be re-done.  If the designer uses accuratte information (especially in the 'Aircraft Geometry' paragraph), the flight tuning should be minimal, if at all.

If I can remember correctly there was a particular problem with the Tucarno default settings during take-off.

Each time, check your Elevator Trim before taking off. (in the default settings it is wrong = nose down!)
Trim the Elevator Wheel until the white indicator is just below the center line..!

I think that cures the problem......!

Paul...keeping his nose up slightly, for take-off... 8-)..!

Ok thankx for the quick respons guys I ve tried to take off with trim down and you know what it really worked plane came off the ground very smoothly.

But because its going to be a learning plane for virtual students the trim has to be correct as default for the plane. Is this possible and if yes how do i have to do this?


Maybe Brett_Henderson or some one else can help me out be fine tuning the flight tunning so it will be as the real tucano

just let me know

Thankx greetz Scratch

The "nose wheel lifeoff speed" also know as B1 Speed or Rotate Speed/Rotational Speed is about 120knts for a 737 and about 200-220knts for a 747 while as a small prop as a Cessna that is about 80knts. If you cant change it then just pull up when you think its at the right speed.

More like... 140-150 kts for V1 in 737, 170-180kts for 747 and 50-60kts for a small prop.  ;)

Maybe Brett_Henderson or some one else can help me out be fine tuning the flight tunning so it will be as the real tucano  

just let me know  

I'd be happy to take a look at it,, especially if the plane will be used for training. Just tell me where to download it..

I can tell you right now, I'm just goint redo the entire cfg and air files, using real numbers and geometry..

I'll look  here later... Right now, I'm waiting on some weather to burn off near Mansfield, Ohio.. gonna fly up there and meet Rotty (on his way home from KOSH) for lunch..

......gonna fly up there and meet Rotty (on his way home from KOSH) for lunch..

Ah yes..... the $200 hamburger.  

best,

.................john

The "nose wheel lifeoff speed" also know as B1 Speed or Rotate Speed/Rotational Speed is about 120knts for a 737 and about 200-220knts for a 747 while as a small prop as a Cessna that is about 80knts. If you cant change it then just pull up when you think its at the right speed.

More like... 140-150 kts for V1 in 737, 170-180kts for 747 and 50-60kts for a small prop.  ;)

Blame the defualt FS checklists then.

ok Brett i send you a PM with the info

thankx m8