Wooden Notes

Rich S. wrote:
"wright1902glider" wrote in message
oups.com...

I've been entertaining the idea of building a Chanute-Herring glider
from alternate wood like doug fir or possibly yellow poplar. Anyone
got specs on yellow poplar? Didn't see it listed in AC43-13.


Harry...............

All I have is this table, copied from one of the old Emeraude newsletters:

Essence Spec. Grav. Tension (psi)
Yellow Poplar .44 8600
Alaska Cedar .46 9900
Douglas Fir .43 to .50 9000 to 10900
Fir .40 to .42 8400 to 9400
West. Hemlock .45 11000
East. White Pine .37 7600
West. Red Cedar .34 7100
Sitka Spruce .41 9400
Port Orford Cedar .43 10200
East. Cottonwood .43 7700

Rich S.


Try this--it's the whole ball o' wax---(Forest products Laboratory wood
handbook,

http://search.netscape.com/ns/boomfr...e.com%2Fsearch
Sorry 'bout the long url----just google the title..Jerry

wright1902glider wrote:
Well, I wuss'd out and went with Sitka on my Wright machine, but only
b/c I didn't know anyone who would murder a West Virginia silver spruce
tree for me. ...that stuff's kinda hard to find, for obvious reasons.
One of the Wright recreators did use it, but then they also had a $7
million budget.

Thought I read somewhere that the Wright flyer had some bamboo in it,
is that so? Do you have any bamboo in yours?

BTW, I have 11 acres in West Virginia full of trees, mature trees. I
have 673' of road frontage and the whole 11 acres is covered with
mature trees, looks like they have never been cut or logged. I have no
idea which tree is which, can't tell a silver spruce from a red cidar
or any cidar for that matter. You're welcome to some if you wanna cut
them yourself.

The Monk

"Flyingmonk" wrote in message

can't tell a silver spruce from a red cidar
or any cidar for that matter.

The Monk


Yes, but if you drink enough of that cider, then all cedars look the same
anyway...

wrote:
To All:

The low cost and wide availability of wood in America makes it a good
choice for the budget-minded builder of simple flying machines. The
only problem is that when picking the stacks at the local lumber yard
you need to know a fair amount about wood in order to select the most
suitable pieces. Part of that chore involves visiting the local yards
- - or box stores - - fairly often in order to see the new pallets as
they're put out for sale.


wood fuselage ultralight?
pass... thank you anyway.

I'm very familiar with the Lohle.

Any kind of mis-hap is bound to find splinters in -um- tender anatomy.
Sorry guys, I just have a different bias.

All-you-men-eee-umm!

In nature it's a white power, but it cooks down real nice.

Fabulous stuff, guys! Manly stuff!

And it's shiny, too.

Far superior to wood in most every way. (well, except buoyancy)

Heck of a lot cheaper, too. (: just mho. ymmv. :^)



Richard

http://www.home.earthlink.net/~tp-1/

"Richard Lamb" wrote in message
k.net...
All-you-men-eee-umm!

In nature it's a white power, but it cooks down real nice.


Ooh - are you gonna get it now!

Rich S.

"Richard Lamb" wrote

Any kind of mis-hap is bound to find splinters in -um- tender anatomy.
Sorry guys, I just have a different bias.

I remember reading an article written by a (I think) French couple, who had
some time of mishap during either takeoff or landing, and the result was a
rather high energy crash. They credit the wooden structure with saving
their life. Seems wood is very adept at absorbing energy, and the cockpit
was designed strong enough to stay mostly intact. They walked away with
very minor injuries.

Anyone else remember this? It was a few years ago, I'm guessing at least 5.

As far as your choice of materials, whatever turns your crank. That is
about as personal as your choice of toilet seat material. I like wood.
Nice and warm to the keester. g
--
Jim in NC

Speaking of high energy crashes...

A few years ago a friend of mine, with his wife, was attempting a
landing that went wrong. He was flying an RV-6 and, somehow, lost
control of the plane on landing.

He careened off the runway to the left, dragging the left wing tip in
the grass, went through a barbed wire fence complete with metal posts,
through a blackberry thicket and then it got interesting.... The
thicket was at the top of a cliff next to a gravel pit and the plane
ended up at the base of the 60 foot cliff nose down in between two piles
of gravel. The nose of the RV was buried in the gravel and the wings
were buried in the two piles of gravel. The contents of the fuel tanks
drained out instantly (cut open by the metal posts) into the gravel.

He suffered a small cut on his left arm from the broken canopy and his
wife, in the right seat, suffered a crushed ankle from the collapsing
fuselage around her right foot.

The RV may not use wood construction but it certainly is well designed
for pilot/passenger protection.

John

Morgans wrote:

"Richard Lamb" wrote


Any kind of mis-hap is bound to find splinters in -um- tender anatomy.
Sorry guys, I just have a different bias.


I remember reading an article written by a (I think) French couple, who
had some time of mishap during either takeoff or landing, and the result
was a rather high energy crash. They credit the wooden structure with
saving their life. Seems wood is very adept at absorbing energy, and
the cockpit was designed strong enough to stay mostly intact. They
walked away with very minor injuries.

Anyone else remember this? It was a few years ago, I'm guessing at
least 5.

As far as your choice of materials, whatever turns your crank. That is
about as personal as your choice of toilet seat material. I like wood.
Nice and warm to the keester. g

In article ,
John Ammeter wrote:

Speaking of high energy crashes...

A few years ago a friend of mine, with his wife, was attempting a
landing that went wrong. He was flying an RV-6 and, somehow, lost
control of the plane on landing.

At least he was flying one of those manly old-fashioned planes, rather
than one of those new-fangled sissy planes designed to prevent ground
loops and other misfortunes. That certainly must have saved him some
embarrassment.

Smitty (-7A) Two

"John Ammeter" wrote

The nose of the RV was buried in the gravel and the wings were buried in
the two piles of gravel.

The contents of the fuel tanks drained out instantly (cut open by the
metal posts) into the gravel.
The RV may not use wood construction but it certainly is well designed for
pilot/passenger protection.

Sounds as though a harried landing turned from bad to worse to better.

I suspect the gravel was a savior. It slowed the stop, by absorbing energy
when it buried the plane. Less G's are a "good thing." g The fuel
soaking down into the gravel also made it harder to ignite, I would think.

So the moral of the story is to always crash into a gravel pile? ;-)
--
Jim in NC

On Wed, 25 Jan 2006 19:03:12 -0800, John Ammeter
wrote:

Speaking of high energy crashes...

A few years ago a friend of mine, with his wife, was attempting a
landing that went wrong. He was flying an RV-6 and, somehow, lost
control of the plane on landing.

He careened off the runway to the left, dragging the left wing tip in
the grass, went through a barbed wire fence complete with metal posts,
through a blackberry thicket and then it got interesting.... The
thicket was at the top of a cliff next to a gravel pit and the plane
ended up at the base of the 60 foot cliff nose down in between two piles
of gravel. The nose of the RV was buried in the gravel and the wings
were buried in the two piles of gravel. The contents of the fuel tanks
drained out instantly (cut open by the metal posts) into the gravel.

He suffered a small cut on his left arm from the broken canopy and his
wife, in the right seat, suffered a crushed ankle from the collapsing
fuselage around her right foot.

The RV may not use wood construction but it certainly is well designed
for pilot/passenger protection.

John

one of our 80 year old pilots took an international visiting friend
for a fly in his Druine D5 turbi. gave the guy his normal rear seat so
that he could fly and flew from the front seat.
on approach to landing he found that the lower seat position in the
front seat prevented him from seeing much. the aircraft intercom being
a homemade unit that ceased working reliably probably back in the 50's
was no help in getting the visitor to take over so the landing
proceeded.

150 ft short of the runway, on the other side of a country road, in
the opposite paddock stood an old cattle loading ramp built from 6"x4"
timber posts probably about the time the radio intercom started to
quit.

the D5 turbi took the nearmost corner post of the cattle ramp fair on
the nosebowl. the impact demolished to a wood stack the entire cattle
ramp. the D5 then slid through a 5 wire farm fence taking out one
post. the aircraft came to rest on a demolished undercarriage in the
centre of the road pointing to the front gate of the airfield.

I arrived on the scene just as the dust settled intending to take my
aircraft out flying.

The D5 turbi is a tandem seat low wing wooden aircraft which is the
bigger brother to the single seat Druine D3 Turbulent.

The most damage was caused by the sawing action of the fence wires as
the aircraft slid through them. The engine mount was bent but not
broken. The guys suffered a cut lip for the pilot and a gash across
the eyebrow for the passenger.

The aircraft has long since completed it's third rebuild and is still
being flown by the now late 80's pilot.

timber is just as much an engineering material as aloooominum.
the glues are a hell of a lot more reliable nowadays.
whittling and aeroplane is good fun.
Stealth Pilot