The wizzwheel gave me an
outward groundspeed of 117 and a homeward of 135.
Then PET = (tot.dist.x home
g/s)/(out gs + home gs)
= (285 x 135) / (117 + 135)
= 152.7 (i.e. 153)
Working looks good - two points to add:
- accurate wiz wheel work .... and
if you start with TRACK, you MUST apply DRIFT before you read G/S, I agree with
G/S out=117kts, G/S home = 135 Kts
- PET formula ....Dist to PET = (D x H)/ (O + H) ...
get the right numbers in the right place!!