[Recording vertical speed at touchdown]

Hi, I found this script somewhere on the Internet. It's pretty useful when comes to calculate the touchdown vertical speed and acceleration. However, in PMDG 777 I've always got very high G (about 2.5-2.9) though my V/S was just around 100fpm. I don't know why, but I'd like to share the script with you. If you have any idea about my issue, please let me know.

Sincerely,

Thinh.

 

armed = false

 

function landingflaps(off, val)

if (val > 5000) and not armed then

if ipc.readUW(0x0366) == 0 then

armed = true

ipc.display("Touchdown monitor armed", 10)

end

end

end

 

event.offset(0x0BDC, "SD", "landingflaps")

 

function onground(off, val)

if val ~= 0 then        

airspeed = math.floor((ipc.readSD(0x02BC) / 128) + 0.5)

        if (airspeed > 30 ) and (armed == true) then

armed = false

landvs = -math.floor( (ipc.readSD(0x030C) * 60 * 3.28084 / 256) + 0.5)

landG = math.floor((ipc.readSD(0x02BC) / 62.4) + 0.5) / 100

ipc.display("Touchdown:  " .. landvs .. " fpm   " .. landG .. " G   " .. airspeed .. " knts   ", 30)

end

end

end

 

event.offset(0x0366, "UW", "onground")