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Once again, nice one runways, right on the mark
In the latter parts of this thread we seem to have a number of people throw their penny-worth into the arena -- precisely what the forum is for, but I think we're losing the focus.
"...multiply by this number..........just look out the windows........use WAAS rated GPS........Say goodbye to QFE"
That's great, but I'd like to return to the reason that I started this topic which is that SD can do it all, is partly doing it all graphically and with a RoD digital readout could so easily remove the need for guesstimates allowing the pilot with a simple sweeping glance to determine that the standard cockpit instruments, as the primary means of flying, are "on the numbers" and the current flight position is endorsed by the information displayed by this outstanding piece of software SD.
I really don't want to start doing mathematical gymnastics when the workload is at it's highest, I just want confirmation that SD supports the current cockpit instrumentation readouts. If SD doesn't concur then I'll have an early heads-up that there might be an issue and it will give me more time to deal with and correct the problem.
Let's not go on about whether it's 3 degs or 2.8 degs glideslope when using the rule of thumb of "5 x the unknown ground speed" (but I'll have a guess anyhow). Just give me a RoD output calculation which is dynamically updated -- that's what computers do so well. It's then up to me what I do with the output, afterall that is what piloting a plane is all about and we're doing it all the time.
Biggles -- EGKB
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