Re: Light-Sport Aircraft Yahoo group WSC Weight and Balance

Richard,

I agree.  The author is thinking in aerodynamic terms and doesn't understand the issue of potential "trike angle of the dangle" issues.  But, by understanding and using the other info, the trike pilot can calculate whether or not the "dangle angle" will work or not, and that's what's important.

 

Jim

 

 

----- Original Message -----

From: Richard Williams

To: Sport_Aircraft@yahoogroups.com

Sent: Sunday, October 04, 2009 9:51 PM

Subject: Re: Light-Sport Aircraft Yahoo group WSC Weight and Balance

 

Jim, others,

I read through the referenced document

Obviously written by a person that doesn't really understand trikes.

The discussion on page 1.5 completely lacks the critical info of trike loading, I.E. where the trike carriage must hang slightly nose high.

Other than that one critical detail. the information is very informative.

R. Williams
BTW:
The hang block 'station' must be measured while the trike is sitting on level ground.
R.W.


---------- Original Message -----------
From: "Jim Bair" <JimBair@SportAviationUnlimited.com>
To: <Sport_Aircraft@yahoogroups.com>
Sent: Sun, 4 Oct 2009 21:03:19 -0500
Subject: Re: Light-Sport Aircraft Yahoo group WSC  Weight and Balance

>  
>
> "I made a spreadsheet for my W&B worksheet
> (or W&L worksheet, I don't care what you
> call it. Same math.) for each trike so
> I could plug in the numbers for each
> one with some various loading scenarios."
>
> Yes Jim... -that-!
> Could you show us a copy of that file please?
> (it's probably an excel file?)
>
> Thanks,
> Mike
>
> I just looked in my Excel folder and they are not there. Unfortunately,
> this means they are gone and the only copies I have at this point are the
> ones in the aircraft. I'm glad this came up, it's a note to self to make a
> copy. The basic table looks like this: (Totally made up sample, but the
> concept)
>
> Item Weight Arm Moment
> Trike 500 60 30000
> front seat 40
> rear seat 58
> fuel 62
> baggage 60
> ______ ________
> Total
>
> And when you add the total moments and divide that number by the total
> weight, it gives you the CG. Compare that to the station of the hang point
> (let's say it's at 53") and if it's a bigger number than 53 the rear wheels
> will be hanging lower.
>
> Here's a link to a good book that has much info on the subject.
> http://www.faa.gov/library/manuals/aircraft/media/FAA-H-8083-1A.pdf
>
> Jim
<snip>

__._,_.___

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___