Class #10 E6B Flight Computer
Content of lesson
Time-distance problems Fuel consumption Statute-to-nautical conversion True Airspeed True Altitude
HOMEWORK
JEPPESEN PRIVATE PILOT MANUAL CHAPTER 8 SECTION C
PHAK 15-11 TO 15-16 NO ASA/GLEIM QUESTIONS ON
THE NEXT TEST HOWEVER STUDY CHAPTER 9
(ASA 9-14 to 9-36) and do homework
SLIDE RULE MATHEMATICS
MULTIPLIER OVER 10 (found on INNER SCALE) = PRODUCT OVER OTHER FACTOR
2 x 4 = 8 MULTIPLIER 2 (OVER 10 ON INSIDE
SCALE) FIND #4 ON INNER SCALE AND ANSWER OR PRODUCT ON OUTERSCALE
SLIDE RULE MATH
DIVISION DIVIDEND OVER DIVISOR =
QUOTIENT (found OVER 10 on inner scale)
8 / 4 = 2
PROBLEMS
13 x 7 = 300 / 15 = 19 x 5 = 345 / 15 = 137 x 7 =
PROBLEMS
13 x 7 = 91 300 / 15 = 20 19 x 5 = 95 345 / 15 = 23 137 x 7 = 959
Converting Minutes to Equivalent Hours
Velocity
Velocity = Distance / Time Distance = Velocity X Time Time = Distance / Velocity
When you use time make sure you convert the minutes to equivalent hours
E6B Please note that the stationary
scale is the main scale (distance) while the inner scale is denoting time.
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
Time, Ground Speed, Distance problems
Given a speed of 120 knots, Distance of 200 N.M. what is
the time? 1:40 or 100 minutes V=d/t (ground speed = distance
/ time T=D/V = 200/120=1.67=1:40
Time, Ground Speed, Distance problems
Given a time 2 hours, Distance of 200 knots what is the speed?
100 knots
Time, Ground Speed, Distance problems (4)
Speed = ?, Time=1:30, Distance=165 n.m. Speed=132 mph, Time=?, Distance=198 mi S=166mph, T=1:50, D=? S=?, T=2:10, D=206 mi S=190kts, T=?, D=95N.M S=130MPH, T=1:10, D=? S=180MPH, T=?, D=330
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 GPH=#GALLONS / TIME Calculate the same as time
distance speed problems
Fuel Consumption Problems
Fuel Consumption Problems
Fuel Rate=13 gal. Per hour Time=1:30 (90minutes) Find: Total fuel:? 19.5 gallons
Fuel Consumption Problems
FR= FUEL RATE, T=TIME, TF=TOTAL FUEL
FR=18, T=1:50, TF=? FR=14, T=?, TF=21 FR=? , T= 2:30, TF=25 FR=13 , T=?, TF=40 FR=6 , T=3:30 , TF=?
Statute to Nautical Mile conversion
True Airspeed
Density Altitude
True Airspeed &Density Altitude
Pressure Altitude, Temp., IAS 8000ft, -10C, 120kts 9000ft, +10C, 140mph 5000ft, +30C, 120mph 7000ft, -20C, 150 kts 12000ft, -10C, 180mps
Answers
TAS, Density Altitude 133 kts, 6900ft 164 mph, 10,500ft 135 mph, 8000ft 160 kts, 4500ft 216 mph, 12,000ft
Temperature Conversion Scale
Bottom of E6B -10 C = what in F -40 C = F 30 C = ?
U.S. Gallons to Imperial Gallons
On APR Airlearn E6B Outside Imperial gallons
between 18 and 19 Outside U.S. gallons near 22 On ASA different
True and Absolute Altitude
Given: Pressure altitude 12,000ft
Indicated Altitude 11,500 (OAT) -10C Terrain Elevation 10,500 What is the absolute altitude
True and Absolute Altitude P208
True and Absolute Altitude P208
What is the absolute altitude 500ft 950ft 1000ft 1500ft To figure out you need to figure
out True altitude first
True and Absolute Altitude P208
True Altitude = 11,450ft Absolute altitude = 950 ft
Fuel Reserve BBCC/FAR’s
BBCC = 45 minutes day or night
FAR = 30 min day, 45 min night