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Calculation

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Standard weight shift calculation on the E6B.

There are 4 items that complete the calculation. If you have any three of the knowns you can find the unknown.

In this example;
1)A/C gross weight is 3800 lbs.
2)distance in arm from forward baggage to aft baggage is 137 in.
3)we need to shift the CG 3 inches in order to be within limits.

How much weight do we need to shift?

On the E6B;
1)place 137 on the inner ring under 3. (inches of change under inches required).
2)find 3800 on inner ring (gross weight) read above for weight to shift -- 83 pounds

You may delete any of these knowns to find the unknown.

Good luck
 
Nice refresher

Thanks from me, too. I couldn't remember, either.

It's just a proportion, as you learned in high school.

Here's a cool one you can use to calculate rate of descent on a standard three-degree glideslope.

First, you have to know your groundspeed. Let's say you use a 90-knot IAS as your standard approach speed. Then, you have a 10-knot headwind component. So what rate of descent do you set up to hold the glideslope?

Place 3 over the 60 pointer on your whizwheel. Your groundspeed will be 80 knots (90 kts IAS - 10 kts headwind). Look for 80 on the bottom scale and look up. You'll see 40, which represents the 400 fpm descent you need to commence when the glideslope needle centers.

That one courtesy of my Alitalia students and their training captain at FSI.
 
More fun than the law allows?

I've been reading most everything in here and I have to admit I'm having a whole lot of fun with this thread in particular. There's been an number of poignant axioms about continuing education. Perhaps I should change my name to Sponge. These tips & tricks are outstanding!
Thank you!
:)
 

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