airplane construction

Jim Macklin wrote:
Understand that bolts used in aircraft construction are not
"hardware store" items. The steel and the tolerances for
aircraft grade fasteners are better than hardware store
Grade 8 bolts. Beech uses bolts in tension to hold the wing
on the Bonanza, Baron and King Air models. When there is a
crash, the bolts are rarely broken. But if the bolts are
not properly installed and maintained, corrosion can weaken
the bolts causing them to break.

Cessna uses a bolt installed in shear through fittings like
you fingers meshed. This is called "double shear" and as
long as the bolt is a snug fit in the hole the bolt can hold
more load than the airplane is designed to experience.
But a bolt in tension is stronger than a bolt in shear.


"george" wrote in message
ups.com...
|
| Bill Watson wrote:
|
| The more you know the more you can do.
|
| Nothing like assembling a sailplane, loading it full of
water and
| bombing down a ridge at red-line for a few hours.
|
| Then you just pull the wings and tail back off and
trailer it home.
|
| the size of those pins/bolts that hold the wings on
should attract the
| attention of any pilot not used to rigging sailpanes :-)
|


Here's a good illustration/animation on "double shear" connections:
http://www.ijee.dit.ie/OnlinePapers/...ted_double.htm

--
Mike