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PNR in the Bob Tait navigation working book

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Flightsurgeon created the topic: PNR in the Bob Tait navigation working book

Hello all, on page 22, the PNR example had the numerator as safe endurance x groundspeed home which I understand but the denominator had Groundspeed out x Groundspeed Home or is that a type
I believe it should be GS out + GS home

Thank again

R
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Stuart Tait replied the topic: PNR in the Bob Tait navigation working book

Hi Ravi

Your correct it was a typo, I suspect a hold over when the calculation used 2 x TAS for the denomator, but CASA has tightened the answer requirements so the calculation has to be more accurate.

I have amended the workbook

Cheers
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Flightsurgeon replied the topic: PNR in the Bob Tait navigation working book

many thanks
I did enjoy the mathematical derivation

R
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