Lesson 10 Flight Computer (Computer Side)
E6B Fast Facts:
The stationary scale is the main scale (distance) while the inner scale that rotates is denoting time.
Division
240 / 10 = 24
Set dividend on outer wheel
Opposite divisor on inner wheel
Read quotient under black 10 mark
Multiplication
9 x 7 = 63
Set 7 across from black 10
Find 9 on inner wheel
Read 63 on outer wheel
Keep in mind most problems are division/multiplication
Time, Ground Speed, Distance Problems
On all Time, Ground Speed, Distance problems the large triangular index is either set opposite Ground Speed or will position itself opposite Ground Speed.
Distance and time are always opposite each other.
Time, Ground Speed, Distance problems
Distance 50 mi.
Ground speed 90 kts.
Read Time 33 min.
Time, Ground Speed, Distance Problems
Distance 450 mi.
Ground speed 140 kts.
Read Time 3 hrs. 12 min.
Fuel consumption problems
Fuel rate is read under the triangular index (usually gal/hr).
The outer scale is equivalent to the fuel used
The inner scale is flying time
Fuel consumption problems
Fuel Burn Rate 7.8 gal/hr
Time 2 hrs.
Fuel used 15.6 gal
Fuel consumption problems
Fuel Burn Rate 7.8 gal/hr
Fuel in Tanks 57.2 gal.
Total Time 7 hrs. 20 min.
Fuel consumption problems
Fuel Burn Rate 12 gal/hr
Fuel in Tanks 74 gal
Total Time 6 hrs. 10 min.
Conversion index
Set US gallons 19
Read IMP gallons 15.8
Read oil weight 143
Read fuel weight 114
Convert Nautical to Statute
Set NM to 52
Read SM 60
Read KM 96.5
Rate of climb
Aircraft ROC 800 ft/min
Climbing from 2000 to 14,000
How much time will it take
put 800 across from the black 10
find 12,000 on outer wheel
read 15 min on inner wheel
Rate of Descent
Aircraft cruise alt 9,000
15 min to descend to 1,000
set 15 on inner wheel across from 8,000
read 534 feet per min on outer wheel
TAS
PA 4500
Temp. C˚ 10
IAS 90 kts.
TAS 97 kts.
TAS
PA 10,000
Temp. C˚ -10
IAS 90 kts
TAS 104 kts
True Altitude
PA 10,000
Temp. C˚ -40
True Alt. 8689
Density Altitude
PA 1185
Temp. C˚ 10
DA 869
Density Altitude
PA 1185
Temp. C˚ 30
DA 3169