kepEZ
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Posts posted by kepEZ
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just visited their website: did they really buy the company just to convert the berkut in a UAV???
i think the company did not change hands, just same people developing UAV platforms, this is not substantiated though.
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e-mail address for john griffiths is not operative and i tried emailing new berkut company beanddi.com, and i am told there are no plans no parts no nothing related to berkut. it sounds like they want to totally blanket berkut past and they are a little angry at berkut loving mob.
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Rutan will be addressing a group of engineering students on wednesday which i will be attending too, should someone have a question lingering in his mind, i am willing to ask.
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Well I asked them over and over again, whether the material is suitable for use with epoxy and they assured me it is. I didnt tell them I intend to use it in aviation since they would back right off citing liability. They also told me they export it to a finnish wind turbine manufacturer on a regular basis, they manufacture special "tension controlled" fabrics for them. The only problem is their lightest fabric is %30 heavier than what the plans call for.
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Most of the time plans call that bid fabrics be cut in 45 degree fashion for lay-up as I see it. Since my supplier can supply +45 / - 45 degree multiaxial fabrics for a very small premium over 0/90 degree fiber orientation, does it make more sense to buy this instead?
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does anyone use stitched non-crimp fabrics instead of woven fabrics the plans call for? I am told they display better mechanical properties since they are crimp free but not easy to work with under wet lay-up conditions. I am also told when used with vacuum bagging it is possible to attain high fiber/resin ratios which results in lighter stronger structures. They are available in various fiber orientations as well. any comments?
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there are several designs by republic aerospace of this sort but it looks they didn't even made it to prototype stage
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i am sure it doesn't serve any purpose other than vastly improved aesthetics but is there any issue with swept back canards, structural or aerodynamic vise?
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I dont think I will access to spruce approved for aircraft structurel use, and -not being a wood expert- I wont be able to tell if a strecth of spruce has flaws that prohibits it as a structurel member. what is the longeron made of in berkut anyway?
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I know it is not without its reasons but what is the rationale behind a spruce longeron?Is it for fighting stress concentrations? In a fully molded composite fuselage as is the case with berkut, I assume there must be alternative solutions to this.
Berkut Plans
in Berkut
Posted
sorry this didnt work either