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Kayberg(at)aol.com
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 Posted: Sun Feb 04, 2007 5:47 am Post subject: glass or carbon |
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I undestand that when you make absolute statements you can be found wrong sometimes, but the cut and paste below came from the Arion website, "Specifications" page.
Construction Vacuum infused oven post cured fiberglass
I was also basing my conclusions from my own hands-on building of our first Lightning. We did the preliminary assemble in Shelbyville next to a carbon-fiber build of an Esqual. Quite an obvious difference in color and texture of the cloth. There are a couple items on a Lightning that may be carbon fiber, but they are not major airframe components.
But I am feeling a bit suckered. If the static load was taken to 5 gs and the design was higher yet, I would not personally care if it was constructed of banana peels and peanut butter. But it isn't. Vacuum infused, oven post cured fiberglass is the industry standard, not only for airplanes but a whole universe of stuff.
When I visited the Pulsar factory, they were doing VACUUM INFUSED OVEN POST CURED FIBERGLASS!
(in a bit of an archaic manner, which is why they are no longer significant players) Their shop forman had gained his experience doing VACUUM INFUSED OVEN POST CURED FIBERGLASS in the Phillipines working for LANCAIR.
If the Arion folks want to throw some carbon cloth in the epoxy, that is fine with me. I wouldnt care if the edges flapped in the breeze before I ground them off. I would like to see some testing if they want to use banana peels.
Doug Koenigsberg
[quote][b]
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georgiemun
Joined: 02 Feb 2007
Posts: 10
Location: New Hope, PA
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| Posted: Sun Feb 04, 2007 5:58 am Post subject: Re: glass or carbon |
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Hey, no problem; I'm just trying to learn as much as I can about the construction of the aircraft that I might be buying. I do have a question for Nick tho...
One that I asked earlier, but was overlooked.
Why does the carbon fiber stop at the root of the wing and does not continue through to the tip of the spar? Is there a reason for this?
Also, it appears then that the spar is of a somewhat hollow construction with the foam creating the cavity? I guess this is done to save weight for the a solid wing spar is not necessary in this case?
Thanks for any clarification that you guys can give.
| Kayberg(at)aol.com wrote: | | I undestand that when you make absolute statements you can be found wrong sometimes |
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vettin74(at)yahoo.com
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| Posted: Sun Feb 04, 2007 7:20 am Post subject: glass or carbon |
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The wing spar is of fiberglass, carbon fiber, foam , and wood construction.....the root end which is in the fuselage is 1/16 per laminet wood core being 1" thick this stops at the wing root and is than a fibergalss foam woven core... this mean the the foam core has woven fiberglass in it for more strength....the wood is used as a high density light filler at the root end.....the spar caps ar 1"by1" rolled unidirectional glass which tapers down to 1"by 1/2" at the tip.....The material thru out the spar is heavier at the root end and lightens up at the tip as to be expected....... yes there is a carbon fiber laminte in the spar... this runs from just inside of the outboard spar bolt hole and out in to the wing some 48"...again something hard to tell from a picture unless you have seen it built or designed the wing!... There is absolutly no problem with the use of a carbon structure use in conjunction with a fiberglass one and i would be very leary of anything else that maybe discussed by the earlier mentioned forwarded post......We all know what assuming does for us and it is best to get information form the horses mouth....again my opinion but we all have them..
Nick
georgiemun <georgiemun(at)yahoo.com> wrote:
[quote]--> Lightning-List message posted by: "georgiemun"
Hey, no problem; I'm just trying to learn as much as I can about the construction of the aircraft that I might be buying. I do have a question for Nick tho...
One that I asked earlier, but was overlooked.
Why does the carbon fiber stop at the root of the wing and does not continue through to the tip of the spar? Is there a reason for this?
Also, it appears then that the spar is of a somewhat hollow construction with the foam creating the cavity? I guess this is Food fight? Enjoy some healthy debate
in the Yahoo! Answers Food & Drink Q&A. [quote][b]
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georgiemun
Joined: 02 Feb 2007
Posts: 10
Location: New Hope, PA
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| Posted: Sun Feb 04, 2007 8:21 am Post subject: Re: glass or carbon |
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Thanks Nick for that detiailed explaination. While I do not understand all of the technical ramafications, I appreciate you taking the time to help me understand how the aircraft is put together.
pequeajim:
I will shoot you an email soon and then as you suggested, we can both go down to Green Landings so I can see the aircraft in person and perhaps get a ride in it too.
Georgie
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Kayberg(at)AOL.COM
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| Posted: Sun Feb 04, 2007 1:52 pm Post subject: glass or carbon |
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And I stand corrected.
Thanks Nick
doug
In a message dated 2/4/2007 10:23:22 AM Eastern Standard Time, vettin74(at)yahoo.com writes:
| Quote: | The wing spar is of fiberglass, carbon fiber, foam , and wood construction.....the root end which is in the fuselage is 1/16 per laminet wood core being 1" thick this stops at the wing root and is than a fibergalss foam woven core... this mean the the foam core has woven fiberglass in it for more strength....the wood is used as a high density light filler at the root end.....the spar caps ar 1"by1" rolled unidirectional glass which tapers down to 1"by 1/2" at the tip.....The material thru out the spar is heavier at the root end and lightens up at the tip as to be expected....... yes there is a carbon fiber laminte in the spar... this runs from just inside of the outboard spar bolt hole and out in to the wing some 48"...again something hard to tell from a picture unless you have seen it built or designed the wing!... There is absolutly no problem with the use of a carbon structure use in conjunction with a fiberglass one and i would be very leary of anything else that maybe discussed by the earlier mentioned forwarded post......We all know what assuming does for us and it is best to get information form the horses mouth....again my opinion but we all have them..
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[quote][b]
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