Post by fsxpaul on Jun 30th, 2012 at 4:16pm
I have had success with the PDCS calculating the CRZ speed. Try this and see if it works for you :)
I enter this info before T/O on the TEMP 2-2 page (I don't enter during climb or cruise because FSX will often CTD):
Enter anticipated FL [320] (you can use the V-One OPT Alt & add about 4,000 ft, e.g. 316 + 4 = 320)
Enter SAT °C [-48] (see below for FL & temp values)
Enter ISA °C [0]
When at desired altitude, set selector switch to CRZ, and update WIND to [0].
I've tried different entry sequences into the PDCS and never had the CRZ speed calculate correctly on the ground.
PA ISA 0°C
410 -56.5
400 -56.5
390 -56.5
380 -56.5
370 -56.5
360 -56.3
350 -54.3
340 -52.4
330 -50.4
320 -48.4
310 -46.4
300 -44.4
290 -42.5
280 -40.5
270 -38.5
260 -36.5
250 -34.5
240 -32.5
230 -30.6
I enter this info before T/O on the TEMP 2-2 page (I don't enter during climb or cruise because FSX will often CTD):
Enter anticipated FL [320] (you can use the V-One OPT Alt & add about 4,000 ft, e.g. 316 + 4 = 320)
Enter SAT °C [-48] (see below for FL & temp values)
Enter ISA °C [0]
When at desired altitude, set selector switch to CRZ, and update WIND to [0].
I've tried different entry sequences into the PDCS and never had the CRZ speed calculate correctly on the ground.
PA ISA 0°C
410 -56.5
400 -56.5
390 -56.5
380 -56.5
370 -56.5
360 -56.3
350 -54.3
340 -52.4
330 -50.4
320 -48.4
310 -46.4
300 -44.4
290 -42.5
280 -40.5
270 -38.5
260 -36.5
250 -34.5
240 -32.5
230 -30.6
