NAVIGATION: Distance Time Speed Fuel

Distance flown 88nm, flight time 43mins, the groundspeed is:

a. 123kts

An aircraft covers a distance of 88nm in 42mins, tailwind 5kts. The TAS is:

121kts

An aircraft with a TAS of 110kts flies from A to B, distance 148nm, in 1hr14mins. The TAS required to fly from B back to A in 1hr 20mins is:

121kts

An aircraft flies from A to B, distance 133nm in 1hr12mins. If there is a headwind of 12kts the TAS is:

123kts

An aircraft is overhead airfield A (elevation sea level) at 1000ft and is required to be at 8500ft within 25nm. Mean climb TAS 100kts, mean climb headwind 6kts. The mean rate of climb required is:

469fpm

During a descent from 6000ft to 1500ft an aircraft with mean descent groundspeed of 90kts covers a distance of 15nm. The rate of descent is:

450fpm

An aircraft climbs from 2500ft to 9500ft at a constant rate of climb of 350fpm. If the mean climb groundspeed is 85kts the distance covered during the climb is:

28nm

  Distance 148nm, TAS 100kts, headwind 8kts, fuel flow 6.8USG/hr. The trip fuel is:

11USG

Distance 185 nm, GS 95, fuel flow 6.8 USG/hr. The trip fuel is:

13.3USG

Flight time A to B = 1 hr 15 minutes, Fuel Flow 7.3USG/hr. The trip fuel is:

9.1 USG

An aircraft is to fly from A to B, distance 235nm, TAS 90kts, tailwind 5kts, cruise fuel flow 8.5USG/hr, assume 3 USG is required to take off and climb to cruising altitude and the reserve fuel requirement is 9USG. The total fuel required is:

33USG