Treat as one leg –
ARD to BULEN,
243nm,
Track 123º (or 124º - it
won’t make any difference to the answer!)
Fuel used ARD-BULEN =
(869 – 432) = 437 litres
Wiz wheel ….. GS OUT =
202kts GS HOME = 135kts
Calculate fuel flow
outbound:
Leg time = (distance/GS)
= 243 / 202 = 1.203 hours
Fuel flow = Fuel used /
Time = 437 / 1.203 = 363 litres/hour
Calculate fuel used BULEN
– ARD
Leg time = (distance/GS)
= 243 / 135 = 1.800 hours
Fuel used = fuel flow x
time = 363 x 1.800 = 653 litres
Total fuel consumption =
869 + 20 + 653 = 1542 litres