Detailed specification of Futaba 10CG configuration items for the Align Trex700N 3G FBL

Menu Category

SubMenu

Comment

Configuration

BASIC

D/R,EXP

Dual rates and Exponential

Switch = B
Activate D/R and EXP = Position UP
Linear behaviour(no expo) = Position DOWN

Active (Switch B = UP)

Not Active (Switch B = DOWN)

BASIC

END POINT

I noticed that the swash plate linkage rods where driven "out of range" or binding with max pitch combined with max cyclic roll and cyclic pitch.

Tried to adjust individual servo end points to compensate. Discovered this does not work for an H3 CCPM swash config. The individual servos become none linear (when moving in a CCPM setting) as the radio treats the end point range as a full throw for each servo.

CH1,2 and 6 must have the same endpoints in an H3 CCPM Swash configuration.

Note for reference (Futaba has defined the following):
CH1 - 4 is defined as 40 degrees servo throw = 100% endpoint
CH5 - 7 (and 8) is defined as 55 degrees servo throw = 100% endpoint

BASIC

SUB-TRIM

BASIC

REVERSE

BASIC

TRIM

BASIC

THROTTLE-CUT

Switch H must be held in down position to activate.
When on the ground, landed. Hold switch until engine has stopped completely. Then let go of the switch.

BASIC

SWASH AFR

Automatic Function Rate
Set the rate (Travel) of the set of servos involved in a function

Collective is calibrated to give +/- 12 deg in IDL2

A cyclic ring is used on the radio Aileron/Elevetor stick to ensure that  servos don't go passed limits in IDL2 mode with max pitch and max on Aileron/Elevator. (Cyclic roll/cyclic pitch)

BASIC

F/S

Fail Safe
 

NOR = Normal. Servos retain their last position just before the Error situation happened
FailSafe = Move servos to a pre-programmed position

BASIC

AUX-CH SELECT

Channel 5 = NULL, Note Channel 5 is GyroGain. When Gyro Sense = Active, Channel 5 is Automatically associated with Ch5 and is overriding whatever is configured in this menu

BASIC

PARAMETER

ATL = Automatic Travel Limit

Type = Helicopter
Swash = HR3 (120deg CCPM)
Module = 2.4GHz /10 Channel
ATL = ON

Adjustable travel limit (ATL): makes the channel 3 TRIM LEVER (THROTTLE TRIM) effective only at low throttle, disabling the trim at high throttle. This prevents pushrod jamming due to idling trim changes.

Note: The radio setup in this table does NOT need or use trim to the cut the engine. The throttle curves and switch assignment is designed such that engine is assigned to a switch (see throttle cut menu)

BASIC

THR-CURV/NOR

See advanced menu

ThrottleCurve

BASIC

PIT-CURV/NOR

 See advanced menu

PitchCurve

BASIC

REVO. MIX

Rudder control...
 if Gyro is not used

INHIBITED.

Gyro is used in heading hold mode. Thus changes in main rotor forces is automatically adjusted.

BASIC

TIMER

BASIC

TRAINER

Trainer configuration not used

BASIC

LOGIC SW

Logical Switches

ADVANCED

THR-CURVE

Throttle-Curves;

Normal mode:
I decided to alter the throttle curve such that headspeed is retained with good marging below midstick position. Reason is that an overreaction when pull-back on the stick generates a double negative if headspeed is lost, and the heli hits the ground as a consequence.

ADVANCED

PITCH-CURVE

Pitch Curves

Pitch curves were derived as follows:

1/ Set collective pitch curve to 100%
2/ Reduced SWASH AFR Pitch setting until Pitch Gauge show 12degrees
3/ This is defined as max performance in IDL2
4/ Adapt performance for Normal and IDL1 as shown in tables

ADVANCED

GYRO SENSE

Gyro Gain settings

MIX = Active
MODE = GY
Switch = Conditional (this implies that it follows the conditions defined in the CONDITIONS menu)

HOLD in rate mode. With the heli on the ground, and HOLD active it is easy to quickly verify that the tail is operating correctly. (A side effect of choosing to configure like this is that the heli will change to RATE mode if practising Autoration)

ADVANCED

REVO.MIX

Rudder control...
 if Gyro is not used

INHIBITED.

Gyro is used in heading hold mode. Thus changes in main rotor forces is automatically adjusted.

ADVANCED

THR-HOLD

Throttle Hold

This setting is important and must be fine tuned for each type of engine and helicopter.

The POSI value defines the throttle position for the engine at IDLE speed. A Speed below engaging the clutch, but high enough to ensure that the engine is running stable in idle (i,e, does not stop)

The Trottle HOLD is used both during startup and while sitting on the ground and for practising AUTOROTATION in flight.

ADVANCED

HOV-THR

Inhibited

ADVANCED

HOV-PIT

Inhibited

ADVANCED

HI/LO-PIT

Maximum travel Pitch. May be used to change hi/lo side of pitch curve in-flight.

Not used.
Inhibited by setting both ADJ = MANUAL

ADVANCED

OFFSET

Trim data. Separate trim setting for each CONDITION setting

Inhibited

ADVANCED

DELAY

Smoothing delay when jumping between the various modes (Normal -> IDL1 etc)
Futaba defines 50% = 0,5seconds

ADVANCED

GOVERNOR

Governor performance curves as listed in the Align instructions manual and visualized below.

Note: The ATV (Adjustable travel volume) value in the radio menu is defined as 50% = midposition value from radio. Thus, the Math is = (Governor ATV value /2) + 50%.

Gear 8,2 : 1

Switch CONDITION,  I.e.: Tied to Condition Select. Thus Governor modes follow flight modes automatically

ADVANCED

THROTTLE-MIX

Inhibited
Not used, Governor is controlling the engine

ADVANCED

THR_NEEDLE

Inhibited
Not used. Controlling the High Needle manually with Channel 8, Variable switch. But this menu/function could readily be used

Pre-programmed feature moving a mixture servo in responds to Throttle Stick movement. Mixer servo must be connected to Channel 8.

ADVANCED

PROG:MIX1-6

Inhibited

ADVANCED

CONDITION SELECT

Sets the switch associated with CONDITION found in the Throttle and Pitch curve menu

NORMAL mode is then defined as Switch E in UP position as this position is not defined by any of the Condition settings above.