Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1

TOPIC:

Re: Wing ribs 09 Dec 2013 01:07 #416

Thanks Phil. I do have a copy of Jim's book and yes it is excellent.
I just contacted Jim to find out when his next workshop is. He does not have one scheduled as of now. He lives about 3 hours from me.

I just received another great set of books. "The collected works of Stan Hall". There are 2 volumes that are absolutely loaded with good information. Very easy to understand.

Just so happens to be given to us by Janice Hagen and Dan Armstrong.
Thanks again Dan for your efforts in these wonderful books.

Both volume 1 and 2 came to 45.00 and is available from
www.esoaring.com/

I hope he does not mind but you can e mail the treasurer Murry at
This email address is being protected from spambots. You need JavaScript enabled to view it. to order.

I only wish the guy that sent my copy would have signed them. Maybe one day.

Karl

--- In This email address is being protected from spambots. You need JavaScript enabled to view it., "Philip Lardner" wrote:
>
> Hi Karl,
>
> I don't know if you have a copy of Jim Marske's Composite Design Manual but
> I think it's worth every penny for the crash course it gives on load and
> stress analysis in wing design - much of which I think can be used in
> calculating and designing other bits of the glider, like using carbon rod in
> the fuselage. Pages F1 - F4 deal with transferring the main wing spar cap
> loads from the carbon rods to the metal fittings via a composite load
> transfer bar bonded to the shear web and rods - and gives the method for
> calculating the shear loads that must be overcome to prevent the rods and
> transfer bar from being ripped out in shear - i.e. how many layers of
> CF/glass cloth you need to wrap them in.
>
> www.marskeaircraft.com/workshops.html
>
> I haven't examined the loads in the tail boom yet or calculated the
> requirements for bonding the rods to the boom's inner skin... as I don't
> know what those loads are yet! I imagine the loads will be relatively light
> in flight - but on the ground, manoeuvering/dragging the glider around and
> launching/landing will see much higher stress loads (I'm guessing here.
> Suggestions anyone?)
>
> I haven't given any serious thought to the pilot pod yet (I've been
> concentrating on the flight surfaces so far) but I think the main areas to
> be looked at are the loads (and load paths) experienced between the landing
> wheel, the main spar and the front skid/tow release. The pilot effectively
> hangs out of the spar and is not really supported by the pod - just enclosed
> by it. Again, it is during take-off and landing that the greatest loads on
> the pod are going to be experienced - in flight, it's just a wind-shield.
> One possibility I'm thinking about is a thin-skin monocoque hull reinforced
> by continuous lengths of carbon rod along critical load lines. I haven't
> analysed this yet, though.
>
> Phil.

Please Log in to join the conversation.

  • Page:
  • 1