When you paid for your fuel you noted on the delivery ticket that it took 32 gallons to top the tanks. You flew four hours and twenty minutes before stopping for fuel. What was the average fuel con- sumption? This time the rate arrow provides the answer.
1.Set 4:20 on the inner scale (or 260 on the middle scale) opposite of 32 on the outer scale. See Figure 7.
2.The rate arrow indicates the average fuel burn rate: 7.4 gallons per hour.
Remember that fuel consumption is greater during the climb to altitude, so this average value does not accurately reflect fuel consumption in cruising flight.
Figure 7
Try these examples: (Answers are on Page 37)
| GALLONS PER HOUR | TIME | TOTAL USED | |||||
1. | 7.8 |
| 3:20 |
|
|
|
| |
2. |
|
|
| 4:50 | 62 |
| ||
|
|
|
| |||||
3. | 8.5 |
|
| 38 |
| |||
4. | 10 |
| 2:30 |
|
|
|
| |
5. | 12 |
|
| 22 |
| |||
12
