The E6B flight computer, nicknamed the “whiz wheel” or “prayer wheel”, is a form of circular Manual E6Bs/CRP-1s remain popular with some users and in some environments rather than the electronic ones because they are lighter, smaller. A Pilots Guide on How to use the E6B Flight Computer by lriccc in Types > Instruction manuals. E6B Flight Computer Instructions. Instructions for the E6B Flight Computer. ASA’s E6-B features a wind component grid and comprehensive crosswind correction.
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What Is This Thing? The A scale is the outer scale, while the B and C scale stick together on the inner disc. The B and C scale must be good friends. This side has three scales that you can line up to calculate things. The A scale the outermost circlethe B scale the middle circleand C flighh the inner circle.
The general concept to learn is that for most problems to solve, there are three elements: You have to reason if fligght means 11,or If your ground speed isthen call Guiness, speed racer. A little common sense will let you compurer the result properly. Like the flip side, it also has a rotating scale where you match one number against another.
But notice the center of the circle is clear.
You can mark on it with a pencil and it will erase right off. The center of the circle has a small hole that ccomputer used as a reference point. The directions for the most common use of the wind side are printed right at the top.
Where should we fly today?
If you know any two of those values, the third can be found easily. Line up this rate arrow with the known airspeed of on the A scale. The time of minutes reads on the B scale in line with the A simple conversion shows that minutes is 2 hours and 15 minutes.
The C scale is known as the time scale. We stopped off at Athens for a nice cold Coke. Fuel works a lot like those time-speed-distance problems in that knowing two values gives you a third. Knowing that we plan to burn 9 gallons per hour, we can determine how long you can fly as follows:.
In this case, our fuel is 9 gallons per hour. How fast are we going? In the same concept of Time-Speed-Distance used above, knowing that we flew the 20nm leg from Chattanooga to the next checkpoint of the Matthews Private Airport in 10 minutes,we can figure out the ground speed as follows:.
When you know the distance and time 20 miles in 10 minutesjust line the two numbers up. The rate pointer will point to your ground speed. Pointing straight across the river will cause you to drift downstream. The same concept applies to flying. When flying from one point to another, you are subject to being pushed by the river of air similar to being pushed downstream by water.
Consider that a direct headwind will simply slow us down, and a direct tailwind will speed us up. However, when we adjust for a wind that has some component coming from the side, our heading must be adjusted to keep the same ground track to your destination. This will affect our ground speed as well as our heading.
Our airspeed, like we calculated above, manuwl kts. The weather briefer told us that the wind is from degrees at 20 kts. We can determine the wind correction as follows hint: In this case, the mark will be at since the was just an easy starting point. You are really just making a 20 unit mark away from the hole.
The wind direction of is under the True Index and nanual wind speed of 20 is marked up from the center hole. Notice that our pencil mark has moved around some.
E6B – Wikipedia
Spin around to put our fligght under the True Index. Our estimated ground speed of reads under the center hole and the wind correction angle flihht 8 is the number of units left or right of the center line that the pencil mark rests. In this case, we will subtract 8 degrees from our course of for our wind correction to get magnetic variation and deviation must then be considered, but that is the topic for another day.
Slide your pencil mark to your airspeed line.
The center hole marks our compurer speed and your pencil mark shows our left or right wind correction angle in degrees. In aviation, the same concept applies.
Take, for instance, cross country flight planning. The way most pilots initially learn to calculate wind correction, time in route and fuel fliht is a manual E6B and a sheet of paper.
Which one you use is a personal preference — both are easy and accurate in their own way. I recommend using the manual E6B to calculate and then using an electronic version or computer flight fllght to double check your work.
Spin The Wheel In a time where calculators and computers can give us virtually instant information, the manual E6B is still a staple in my flight bag. Sure, I have an electronic version of the E6B on my phone, but I find it to be quicker to spin the wheel on tlight trusty metal version than to open an app, find the function I want and type in the values.
Plus, the good old metal one will never get low on batteries. Tell me what you fly with — do you prefer a manual or electronic flight computer?
Subscribe to our mailing list for great content each week! Follow us at facebook. And the batteries are still ticking, huh? I love that they are still just as useful today. Thanks for reading, James, and for your service in the Air Force! Can i calculate unknown wind direction and speed with the e6b if i have, oat, pressure altitude, Tas and heading? To determine the unknown wind speed and direction, you need to have the variables of groundspeed, TAS, true heading and true course.
Your email address will not be published. James kephart on November 7, at Used to make fliteplans in Air Force Reply. Clay on November 7, at 2: Jody on May 19, at Clay on May 19, at If you need a refresher, read about how to….
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