Rate of Turn Pointer on EADI (for Bert's mod)

[C2615 319]

I noticed with Bert's panel mod, the little write rectangle at the button of EADI move perfectly align with the ball indicator under it, Look up the manual, it says it's rate of turn pointer, rather than incliometer.

So I dig up the xml's (for the first time) and made some modification to get it right.

I changed these line in GAUGEPC12EADI\Gauge_EFIS50_EADIV6.xml and GAUGEPC12EADI\Gauge_EFIS50_EADIVCV6.xml

				<Element id="Slip Indicator">
				<FloatPosition>255.000,370.000</FloatPosition>
					<Image id="pfd_slip_indicator.bmp" Name="pfd_slip_indicator.bmp">
						<Transparent>True</Transparent>
						<Axis>12.500,0</Axis>
						<Bright>True</Bright>
					</Image>
					<Shift id="Shift">
						<Scale>60.500,0.000</Scale>
						<Expression id="Expression">
							<Minimum>-1.000</Minimum>
							<Maximum>1.000</Maximum>
							<Script>(A:Turn coordinator ball,position)</Script>
						</Expression>
					</Shift>
				</Element>

INTO

				<Element id="Slip Indicator">
				<FloatPosition>255.000,370.000</FloatPosition>
					<Image id="pfd_slip_indicator.bmp" Name="pfd_slip_indicator.bmp">
						<Transparent>True</Transparent>
						<Axis>12.500,0</Axis>
						<Bright>True</Bright>
					</Image>
					<Shift id="Shift">
						<Scale>1000.000,0.000</Scale>
						<Expression id="Expression">
							<Minimum>-1.000</Minimum>
							<Maximum>1.000</Maximum>
							<Script>(A:TURN INDICATOR RATE,position)</Script>
						</Expression>
					</Shift>
				</Element>

While there is no scale described in the manual, as common sense, I made it aligen to the scaler above when in 3deg/sec standard turn...by manual fly test... so it might be off a little, if anyone could give me exact value, appreciate.

Also a side effect is when turning on the ground (and if you dare to kick rudder in flight) the pointer will go way off the edge of display, I don't know if it's what real aircraft would show, and I don't know how could I stop it... If anyone could help to improve the very first xml gau modification I did, appreciate.

 

EDIT: with more test flight, changed the scale valur a little bit

Edited May 17, 2020 by C2615

[Bert Pieke 7,584]

From the SDK:

TURN INDICATOR RATE                                                   Radians per second DELTA HEADING RATE     Rate of turn of heading indicator     Radians per second       TURN COORDINATOR BALL     Turn coordinator ball position     Position 128 (-127 to 127)

Edited May 17, 2020 by Bert Pieke

[Bert Pieke 7,584]

Try something like this (you will have to adjust the sensitivity..)

 

                    <Shift id="Shift">
                        <Scale>60.500,0.000</Scale>
                        <Expression id="Expression">
                            <Minimum>-1.000</Minimum>
                            <Maximum>1.000</Maximum>
                            <Script>(A:TURN INDICATOR RATE, radians per second) 15 *</Script>
                        </Expression>
                        <Delay PixelsPerSecond="20" />
                    </Shift>                   

Edited May 17, 2020 by Bert Pieke

[C2615 319]

Thanks Bert, I'll take a look later, for now the scale is close enough as flight test result.

I think it should have some nonlinear scale in the real plane, but I can't find any data for that, any real PC12 pilot could help on how this thing behavoir when turning on ground?