10 degree pitch up for takeoff???

[juanca]

     have you ever noticed that in the 737  when you takeoff to a 10 degree pitchup to get airborne, the tail hits (or at least skims or gets too close ) the the surface!!!!! !!!!!!!!!!! scary

I noticed this when i was practicing my takeoffs and then saw them on instant replay.

(I use 15 degrees flaps,  set trim, FD and   roll at 130knts)

But also if i make a less than 10 degree  the plane dont seem to takeoff

what am I doing wrong?


I leave in Honduras and in MHTG we have a very short runway.!!! in wich you dont have  that much space to roll

thanks for any of your data.

Rodriguez

[Nexus]

the technique is to intitial rotate with a speed of 2 degrees/second until you have the prefered climb attitude (around 15 degrees). That way you'll avoid tail strikes on the longer 737 models (the shorter variants don't need to really pay attention to tail strikes)

You're correct in using Flaps 15, that is the setting for short runway take-offs, so that can't be the fault here.
Also check your weight, too much fuel will make your airplane harder to accelerate and requires more runway length

[stivvi]

i use 5 degree flaps for a737 and never have any problems in take off

[garymbuska]

When taking off in any plane you have to consider
the following
the actual weight fo the plane at take off. This includes fuel cargo and passengers
which way is the wind coming from so you can check for side winds and tail winds.
what is the length of the runway you are using
All of the above factors are used to determine at what speed you should rotate at how much flaps to set
And the one thing that FS does not have is what angle to set the stabalator at. This is the forward part of the elevator. In the real world these can be set to give you better elevator control under most conditions.
I am suprised that no one has done this yet. Maybe most designers are not aware that this can be moved or controled by the pilot. I am not talking about trim tabs either. I am talking about the part of the elevator that does not move when you move the yoke in & out.
There is a dial located in the cock pit that allows the pilot to move this up and down and is set at taxi and usually left alone during flight.  8)    

[Nexus]

Gary,  you can set the stabilizer at desired unit. Just assign keys to elevator trim down/up.

However the default Boeings has no number scale so it's impossible to set the correct stabilizer trim (a.k.a pitch trim)  :(

During flights it's used aswell, especially on descent and climb phases. You'll find the trim switches on the yoke (left thumb for captains, right for co-pilot) but also on the center pedestal in form of a wheel or a lever.
What it does is to change the angle of the whole horizontal stabilizer (subsequently the elevators aswell)
The 737 has a very unique trim wheel sound, so if you watch a cockpit movie you can hear the trim wheels rotating. Pretty neat  :)