E6b Flight Computer Exercises !!top!!

Part 1: Core Conversions (Always on the E6B’s inner/outer scales)

• Task: Calculate the ETA. You have 1 hour of fuel left. Do you make it?
• Method: GS = 130 + 15 = 145 knots. Time = (Distance / GS) * 60 = (27 / 145) * 60.
• Answer: 11.1 minutes. Yes, you make it with 48 minutes of reserve. (Do this on your E6B – set 145 over the index, find 27 on the outer, read 11.1 on the inner).

• Original error = Distance off / Distance flown = 4/40 = 6°.
• Total turn = 6° + 3° = 9°.

1. On wind side, set wind direction 345° from center and plot wind speed 30 KT.
2. Rotate dial to put course 300° at top; slide wind vector so tail at center.
3. Read WCA and groundspeed: crosswind component will cause a left correction.
4. Approximate solution by vector math: wind relative angle = 345 − 300 = 45° (from right front). Crosswind = 30 × sin45° ≈ 21.2 KT → WCA ≈ arcsin(21.2/120) ≈ 10.2° right. Headwind component = 30 × cos45° ≈ 21.2 KT → groundspeed ≈ 120 − 21.2 = 98.8 KT.
5. Time = 90 / 98.8 ≈ 0.911 h → 54.7 min.

Scenario:

Convert 100 Statute Miles to Nautical Miles.

Because the slide rule does not show decimal points, you must estimate magnitude. e6b flight computer exercises