Question about Tote board and takeoff trim

[supa325]

I'm reading up on the VSTOL syllabus (NAVAIR 00-08T-11), and Chapter 8 Launch and Departure Procedures says this:

The trim setting will change with changes in the aircraft gross weight and the center of gravity. During CQ operations, the LSO will normally calculate an average trim setting to be used by all aircraft. The aileron and rudder trim shall always be set at 0.

 

Does anyone have that reference info? In the DCS training it always to put 2 degrees nose down, which I'm sure is a good average, but I would like to be able to be as precise as possible on the carrier

[shagrat]

I'm reading up on the VSTOL syllabus (NAVAIR 00-08T-11), and Chapter 8 Launch and Departure Procedures says this:

 

 

 

 

 

Does anyone have that reference info? In the DCS training it always to put 2 degrees nose down, which I'm sure is a good average, but I would like to be able to be as precise as possible on the carrier

 

Aileron and rudder trim to "0", NOT the elevator trim. Elevator trim (pitch) is 2 down.

EDIT the elevator trim compensates for COG and drag from the VSTOL flap settings IIRC.

[Blackeye]

In the DCS training it always to put 2 degrees nose down, which I'm sure is a good average, but I would like to be able to be as precise as possible on the carrier

 

I think those 2° ND originate from the NATOPS manual for shore-based operations:

Trim for takeoff shall be 0° for both aileron and rudder. Shore-based pitch trim shall be 2° ND except when conducting a VTO in the TAV-8B,in which case 1°ND will be used. These trim settings are based upon rotation of the aircraft/nozzles at the calculated rotation airspeed while the stick remains guarded at the trimmed position. Use of additional airspeed in order to provide a performance pad will produce nose down pitching moments after rotation that will have to be arrested with aft stick deflections.

It also calls for 2° nose down (4 if you don't hold the stick) during taxi to prevent the nose RCS from firing and kicking up debris:

 

 

When taxiing with nozzles deflected, it is essential that the stick be held forward of 2° nose down or that the stabilator be appropriately trimmed so that the nose RCS valve will remain closed. (Since the stick will move fore and aft slightly during taxi, the stabilator should be trimmed to 4° ND if the stick is not going to be held during taxi.)

 

I haven't found anything more substantial on carrier takeoff unfortunately.

[supa325]

Aileron and rudder trim to "0", NOT the elevator trim. Elevator trim (pitch) is 2 down.

EDIT the elevator trim compensates for COG and drag from the VSTOL flap settings IIRC.

 

Sorry if I wasn't clear, my question is in regard to the elevator trim and the calculations giving different results to the trim on the tote board. I understand the aileron and rudder are always 0.