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Aviomodelli Caproni Calif A-14 . . after the crash.

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Peter Balcombe
Posts: 1399
Joined: 18 Mar 2015, 10:13
Location: Clevedon, North Somerset, U.K.

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Peter Balcombe »

Max Wright wrote: 24 Oct 2020, 22:08 When I lifted the assembled model, it seemed extra heavy. So I stepped on to the scales, deducted my 90 kg and the residue was 4.5 kg. The wings together have an area of 0.570 m² = wing loading of 126 grams/m².
Max, I think your calcs are a bit out. 4.5kg & 0.57m square, gives 9.7kg/m square.
This equates to nearly 26oz/sq ft in old imperial money - which is a bit heavier than the 16oz/sq ft area I would expect. If that is correct then it might need a good blow to stay up!
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Max Wright
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Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

My advice was 0.570 m² ÷ 4.5 kg = 0.126 kg/m² Peter.

Are you doing 0.570 m² x 4.5 kg = 2.56 ?

No. That's not 9.7 kg/m²

Sorry. How did you arrive at 9.7?

4.5 ÷ .570 = 7.89

4.5 x .570 = 2.56

Sorry for being thick. What are we missing?

Cheers
Max
Barry_Cole

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Barry_Cole »

1/0.57= 1.754385964912281

1.754385964912281 x 4.5 = 7.89

So 7.89 Kg/SqMtr
or 23.59 Oz/Sqft

I could be wrong though.

:? :? :? :?

BC
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Peter Balcombe
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Location: Clevedon, North Somerset, U.K.

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Peter Balcombe »

Max, as Barry shows - you have to divide your weight by your wing area (in sq m), thus you increase your weight per m sq. as you say you have less than 1 sq m.
(Wing loading = weight / wing area) ;)
Last edited by Peter Balcombe on 25 Oct 2020, 11:22, edited 1 time in total.
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RobbieB
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Location: North West

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by RobbieB »

But this is in upside down land....................... :idea:
Barry_Cole

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Barry_Cole »

RobbieB wrote: 25 Oct 2020, 10:19 But this is in upside down land....................... :idea:
I would like it noted that I did not say that....

BC
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Peter Balcombe
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Location: Clevedon, North Somerset, U.K.

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Peter Balcombe »

Barry_Cole wrote: 25 Oct 2020, 11:18
RobbieB wrote: 25 Oct 2020, 10:19 But this is in upside down land....................... :idea:
I would like it noted that I did not say that....

BC
But I bet you thought it :lol: :lol:
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Max Wright
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Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

My long and well thought out reply has disappeared.

The precis is "What is my wing loading in grams per square decimetre?"

That's the yard stick.
Max
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Peter Balcombe
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Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Peter Balcombe »

Max,
Google says multiply by 10, so that makes 78.9grams/decimetre squared.
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Max Wright
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Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

Thanks, Peter.
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