Help with Weight and Balance envelope C172

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Help with Weight and Balance envelope C172

Help with Weight and Balance envelope C172

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Liam Sandie	Liam Sandie posted 5/22/2013 10:33:15 PM HOT Topic Details Share Topic
Group: Forum Members Posts: 72, Visits: 261	Hi all, just subscribed to SD now Android is supported (hope the full range of features make it across). Anyway I am having real difficulty setting up the w&b envelope for our aircraft. There is already an online envelope which uses a Microsoft spreadsheet. This can be found here:- http://www.dukeriesaviation.f9.co.uk/downloads/wb/G-ROLY_WeightBalance.xls Can someone please assist me with using this graph to set up my Skydemon as I cannot get it to appear correct at all. Many thanks Liam https://www.instagram.com/liam548/
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Lyndon	Lyndon posted 5/23/2013 10:24:29 AM Post Details Share Post
Group: Forum Members Posts: 1, Visits: 3	Think I've worked out the figures to input into SD, but the graph (arm length vs weight) comes out a little differently shaped to the one on the spreadsheet (moment vs weight). instead of moment x 1000 weight of the POH 50.7 1500 67 1950 87.5 2450 107.3 2450 84.3 1500 I get this arm weight in sky demon 33.8 1500 34.36 1950 35.71 2450 43.8 2450 56.2 1500 I've tried a few plane configurations of various weights in different locations on both the spreadsheet and SD and they do appear to be working the same so I guess its right, its just a little disconcerting they look so different. Can anyone check this for me please? -Lyndon
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Help with Weight and Balance envelope C172

Liam548 - 5/22/2013 10:33:15 PM

The reason you are struggling is because the graph in your spreadsheet...

stevelup - 5/23/2013 8:18:53 AM

[url=http://linux.cre.co.uk/pub/G-ROLY.aircraft]Link[/url]

stevelup - 5/23/2013 8:22:21 AM

Thank you Steve. Is the link the link to the file for sd?

Liam548 - 5/23/2013 8:33:51 AM

Think I've worked out the figures to input into SD, but the graph (arm...

Lyndon - 5/23/2013 10:24:29 AM

Steve what does your point mean regarding the last figure?

Liam548 - 5/23/2013 10:44:36 AM

The moment graph will lean to the right, the CG graph would usually...

stevelup - 5/23/2013 3:00:40 PM

Sorry for mis understanding but ignore the graph? The issue I think...

Liam548 - 5/23/2013 3:04:01 PM

The Moment Graph in your POH is there to help you do the calculation...

stevelup - 5/23/2013 3:32:27 PM

I see. Thank you very much for your help :)

Liam548 - 5/23/2013 3:44:53 PM

Steve, pretty much there with the envelope now after reading your post...

Liam548 - 5/29/2013 10:22:45 PM

You should have a weight and balance record as part of your POH....

stevelup - 5/29/2013 11:39:43 PM

Hi again Steve I'm afraid that even after a year I am still unable...

fuzzflyer - 7/1/2013 12:30:57 PM

Easiest way is to upload the picture somewhere like photobucket and...

stevelup - 7/1/2013 6:04:02 PM

Hi Steve...

fuzzflyer - 7/2/2013 1:54:43 PM

thanks Steve, much appreciated. I will have to look in the POH...

Liam548 - 5/29/2013 11:43:32 PM

I'm pretty sure the W&B schedule forms part of your 'Approved Flight...

stevelup - 5/30/2013 8:34:52 AM

Empty weight is 1490lbs CofG empty weight 41.25 ins There arn't 2...

Liam548 - 5/30/2013 4:16:10 PM

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