ASA E6-B - Manuals

5 The Slide Rule Side The term “circular slide rule” shouldn’t be intimidat-ing. This side of your computer simply consists of arotating disk with numbers on the middle scale, which when set against similar numbers on thefixed portion ( outer scale), allows you to solve problems of time , speed , an...

6 Now look at the number 15 on the disk. Between 15and 16 each calibration mark is equal to .2 andwould be read as 15.2, 15.4, etc. If you were solvinga problem with an airspeed of 150 knots, the firstcalibration past 15 (150 in this case) would be 152.The spacing changes again at the number 30,wher...

10 In the final and most common type of time-speed-distance problem, the time and distance are known,and you need to solve for unknown speed . The rate arrow represents the answer. You will haveflown between two known ground reference points26 NM apart and checked the time between them tobe: 13 (thi...

11 Fuel Consumption Problems Problems involving fuel consumption, fuel endur-ance, and fuel capacity are solved using the samenumbers you used in the time-speed-distance prob-lems. With the exception of time values, only thenames change. Assume that your airplane’s Approved Flight Manual indicates f...

12 When you paid for your fuel you noted on thedelivery ticket that it took 32 gallons to top the tanks.You flew four hours and twenty minutes beforestopping 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 th...

13 Conversions You can’t solve a problem unless the values agree.You can’t mix statute and nautical miles, gallonsand liters, or Fahrenheit and Celsius. Your ASAE6-B Flight Computer makes it possible for you toconvert between values with simple settings of themiddle scale. Nautical to Statute Miles ...

14 You can convert either nautical or statute miles to kilometers . Find the KM marking on the outer scale. Set the known value beneath the NAUT orSTAT arrow as before, and read kilometers underthe KM marking. For example, to convert 115 stat-ute miles to kilometers: 1. Set 115 opposite of the STAT ...

15 U.S. Gallons to Imperial Gallons Your Approved Flight Manual lists fuel capacity inU.S. gallons, but in many countries fuel is deliveredin Imperial gallons. Arrows marked U.S. GAL andIMP. GAL are provided on both middle and outerscales to help you convert between these quanti-ties. Your tanks are...

16 middle scale and read 38.5 U.S. gallons on theouter scale. Quantity /Weight Conversions Aviation gasoline weighs 6 pounds per U.S. gallon.For weight and balance calculations, aviation gaso-line weight-per-gallon can be determined by liningthe U.S. GAL arrow on the middle scale with theFUEL LBS ar...

18 Using the Altitude and SpeedCorrection Windows Altimeters and airspeed indicators are designed togive correct indications under standard conditionsat sea level. The consistency of the earth’s atmo-sphere does not change linearly as you gain alti-tude; its density is affected by variations in temp...

20 Converting Mach Number to True Airspeed To convert Mach Number to True Airspeed (or vice versa), rotate the inner dial until you see the MachNo. Index inside the airspeed correction window onthe inner dial. Line up the true or outside air tem-perature (do not use Indicated Air Temperature)opposit...

21 True Altitude When the air is colder than standard your altimetercan mislead you into thinking you are higher thanyou actually are. Determine true altitude by thefollowing steps: 1. Determine pressure altitude by setting 29.92 momentarily on the altimeter. 2. Set pressure altitude next to outside...

22 If the station altitude is unknown, read calibratedaltitude MSL on the middle scale and true altitudeMSL on the outer scale. In Figure 15 the pressure altitude is 10,000 feet, station altitude is 5,000 feet, outside air temperature is-19 ° C, and your indicated (calibrated) altitude is 12,000 fee...

24 (Answers are on Page 38) GROUND SPEED FEET PER MILE FEET PER REQUIRED MINUTE 1. 120 350 2. 100 250 3. 150 300 Off-Course Problems When you navigate by pilotage, you will occasion-ally find your airplane has drifted off the plannedcourse due to the wind. If you find yourself over alandmark to one ...

26 Figure 19 shows the setups in equations. Figure 19 Figure 18

27 The Crosswind Table To determine headwind, tailwind or crosswindcomponent quickly and easily, you must know theangle between your course and the reported winddirection. You also must know the reported windvelocity. This will be especially helpful in anticipat-ing the effect of wind when landing, ...

28 Example: The ATIS reports the wind as from230 ° at 14 knots with runway 18 in use. In the column headed by 50 ° ( see Figure 20) there is a box for 10 knots and a box for 20 knots.Interpolating, the headwind component will be9.5 knots and the crosswind component will be11.5 knots. Those are “appr...

32 Determining Winds in Flight Winds aloft forecasts are frequently in error. If youhave an autopilot and some free time, you cancalculate the actual winds at your location andaltitude. It helps if you have GPS, too. To solve an inflight wind problem you need your ground speed, true heading, true co...

37 Answers to Sample Problems Time-Speed-Distance Problems, Page 10 1. 4 Hours and 12 Minutes 2. 138 Knots 3. 183 Nautical Miles 4. 110 Knots 5. 133 Nautical Miles Fuel Consumption Problems, Page 12 1. 26 Gallons 2. 12.8 GPH 3. 4 Hours and 28 Minutes 4. 25 Gallons 5. 1 Hour and 50 Minutes Distance C...