Doodles...

Some times you have more time than you know what to do with,

Here are some (on topic - no less) doodles of a small low wing.
inspired by Bruce King's tiny little BK-1..


Thought I'd share - just for fun.



Richard

The .gifs need a DLS line, or patience.

In article ,
Richard Lamb wrote:

Some times you have more time than you know what to do with,

Here are some (on topic - no less) doodles of a small low wing.
inspired by Bruce King's tiny little BK-1..


Thought I'd share - just for fun.



Richard

The .gifs need a DLS line, or patience.

hmm, they seem to have been doodled in invisible ink...

Smitty Two wrote:

In article ,
Richard Lamb wrote:

Some times you have more time than you know what to do with,

Here are some (on topic - no less) doodles of a small low wing.
inspired by Bruce King's tiny little BK-1..


Thought I'd share - just for fun.



Richard

The .gifs need a DLS line, or patience.

hmm, they seem to have been doodled in invisible ink...

Oh
, I guess I forgot the secret decoder ring function?

http://home.earthlink.net/~cavelamb

There is no index file, just some pics.

(thanks Smitty)

"Richard Lamb" wrote in message
...

Here are some (on topic - no less) doodles of a small low wing.
inspired by Bruce King's tiny little BK-1..

http://home.earthlink.net/~cavelamb

Richard...............

It looks vaguely familiar. . .

http://www.homebuilt.org/kits/littner/cp80.html

Rich S.

"Rich S." wrote:

"Richard Lamb" wrote in message
...

Here are some (on topic - no less) doodles of a small low wing.
inspired by Bruce King's tiny little BK-1..

http://home.earthlink.net/~cavelamb

Richard...............

It looks vaguely familiar. . .

http://www.homebuilt.org/kits/littner/cp80.html

Rich S.

Does look darn close but the Zephyr is a bit larger
at 19+ span and 17' long.

This one is a bit smaller.
call it 16 foot span and 15 feet long.
and maybe a full foot shorter in height.
I think it was 6o to 66 sq ft for the wing area is
about the same for both.

I just uploaded a cross section sketch that shows the
size a little (intended as a pun) better.

http://home.earthlink.net/~cavelamb/l-one-2x.jpg

Guess/wish 500 pounds empty with a VW,
but
this is one place where a 912 and adjustable
prop would really rock.

Or spec the Rotax 914 (turbo!) and a higher
aspect ratio wing (longer span) for those
mini-U2 missions....

"Richard Lamb" wrote in message
...

This one is a bit smaller.
call it 16 foot span and 15 feet long.
and maybe a full foot shorter in height.
I think it was 6o to 66 sq ft for the wing area is
about the same for both.

I can't see any scale or measurements on your sketches. Maybe I need better
glasses.

Or spec the Rotax 914 (turbo!) and a higher
aspect ratio wing (longer span) for those
mini-U2 missions....

Or an Apex T62-32?

http://avonaero.com/solar32.htm

You could lose the cheek cowls, reduce frontal area by a bunch and maybe
come in at your desired weight. Does a tailwheel airframe back up real well?

Rich S.

Well, since you asked...

this one is a 76 sq. ft wing which is not the exact right wing
for this plane, but the worksheet was already done-so...what.

No idea how the columns will hold up on the net, but .....
it's worth a try...

The spar caps are 1-1/5" X 1/8" 6061 with 1-1/2" x 1/8"
6061 straps layered to the indicated (interpreted) thickness.

Bruce bolted his spar, which produced a very straight spar
assembly.

Hammering big rivets into small structures will invariably
induce some distortion.

We are doing is a beam spar rather than a proper box, so the
sheer web dimension should be doubled.

And?
No promise that any of this is close to correct...

================================================== ======================

X-Wing SPAR Build .58 R.Lamb 2001
Project Name L-One V
Run time: 01-10-2006 at 10:43:10

Wing Span [ft] 17.00 Root Chord
[ft] 5.00
Wing Area [sqft] 76.50 Tip Chord
[ft] 4.00
Chord thickness [%] 12.00 Mean Chord
[ft] 4.50
Gross Wgt [lb] 888.00 Aspect Ratio
[#] 3.78
Lift (Vs) [lb] 888.00 Wing Loading
[lb/sqft] 11.61
V(min) [mph] 59.04 Max
CL [#] 1.30
Load Factor [G's] 4.00 Spar Width
[inches] 1.50
Cap Compression [psi] 66,000 Shear Web [psi]
10,000
Thickness [% of Chord] 12


Sta W.STA. AIR LOAD SHEAR MOM FTLB
num FT PPF LB FT.LB
1 0.000 232.000 1776.000 7268.000
2 0.850 236.000 1580.000 5842.000
3 1.700 241.000 1389.000 4580.000
4 2.550 246.000 1201.000 3479.000
5 3.400 250.000 1018.000 2536.000
6 4.250 255.000 838.000 1747.000
7 5.100 260.000 663.000 1109.000
8 5.950 264.000 491.000 618.000
9 6.800 269.000 323.000 272.000
10 7.650 273.000 159.000 67.000
11 8.500 278.000 0.000 -1.000

Spar weight parameters:

Sta W.Sta. SPAR HGT CAP THK WEB THK
num FT IN IN IN
1 0.000 5.760 0.306 0.031
2 0.850 5.645 0.251 0.028
3 1.700 5.530 0.201 0.025
4 2.550 5.414 0.156 0.022
5 3.400 5.299 0.116 0.019
6 4.250 5.184 0.082 0.016
7 5.100 5.069 0.053 0.013
8 5.950 4.954 0.030 0.010
9 6.800 4.838 0.014 0.007
10 7.650 4.723 0.003 0.003
11 8.500 4.608 -0.000 0.000

Shear web thickness is for a box type spar. For single web, double
it.

================================================== ======================

"Rich S." wrote:

"Richard Lamb" wrote in message
...

This one is a bit smaller.
call it 16 foot span and 15 feet long.
and maybe a full foot shorter in height.
I think it was 6o to 66 sq ft for the wing area is
about the same for both.

I can't see any scale or measurements on your sketches. Maybe I need better
glasses.

No, you just need the source files, which are drawn full scale.
These are pictures of the cad screen.


Or spec the Rotax 914 (turbo!) and a higher
aspect ratio wing (longer span) for those
mini-U2 missions....

Or an Apex T62-32?

http://avonaero.com/solar32.htm

You could lose the cheek cowls, reduce frontal area by a bunch and maybe
come in at your desired weight. Does a tailwheel airframe back up real well?

You, sir, are a man after my own heart.
Who wants to fly under powered aircraft!

But then there is the gas load (!)
Wet wing between the spars (no clue how much gas that is, but that's
all you get).

Climb to 10000 feet in two minutes and play sailplane?

And yes, it backs up real well.
At least on the ground.
Pick it up by the tailwheel and drag it around like a little red wagon.

It's a tiny little thing...

g

Try it again?

this one is a 76 sq. ft wing which is not the exact right wing
for this plane, but the worksheet was already done-so...what.

No idea how the columns will hold up on the net, but .....
it's worth a try...

The spar caps are 1-1/5" X 1/8" 6061 with 1-1/2" x 1/8"
6061 straps layered to the indicated (interpreted) thickness.

Bruce bolted his spar, which produced a very straight spar
assembly.

Hammering big rivets into small structures will invariably
induce some distortion.

We are doing is a beam spar rather than a proper box, so the
sheer web dimension should be doubled.

And?
No promise that any of this is close to correct...

================================================== ======================

X-Wing SPAR Build .58 R.Lamb 2001
Project Name L-One V
Run time: 01-10-2006 at 10:43:10

Wing Span [ft] 17.00 Root Chord [ft]
5.00
Wing Area [sqft] 76.50 Tip Chord [ft]
4.00
Chord thickness [%] 12.00 Mean Chord [ft]
4.50
Gross Wgt [lb] 888.00 Aspect Ratio [#]
3.78
Lift (Vs) [lb] 888.00 Wing Loading [lb/sqft]
11.61
V(min) [mph] 59.04 Max CL [#]
1.30
Load Factor [G's] 4.00 Spar Width [inches]
1.50
Cap Compression [psi] 66,000 Shear Web [psi]
10,000
Thickness [% of Chord] 12


Sta W.STA. AIR LOAD SHEAR MOM FTLB
num FT PPF LB FT.LB
1 0.000 232.000 1776.000 7268.000
2 0.850 236.000 1580.000 5842.000
3 1.700 241.000 1389.000 4580.000
4 2.550 246.000 1201.000 3479.000
5 3.400 250.000 1018.000 2536.000
6 4.250 255.000 838.000 1747.000
7 5.100 260.000 663.000 1109.000
8 5.950 264.000 491.000 618.000
9 6.800 269.000 323.000 272.000
10 7.650 273.000 159.000 67.000
11 8.500 278.000 0.000 -1.000

Spar weight parameters:

Sta W.Sta. SPAR HGT CAP THK WEB THK
num FT IN IN IN
1 0.000 5.760 0.306 0.031
2 0.850 5.645 0.251 0.028
3 1.700 5.530 0.201 0.025
4 2.550 5.414 0.156 0.022
5 3.400 5.299 0.116 0.019
6 4.250 5.184 0.082 0.016
7 5.100 5.069 0.053 0.013
8 5.950 4.954 0.030 0.010
9 6.800 4.838 0.014 0.007
10 7.650 4.723 0.003 0.003
11 8.500 4.608 -0.000 0.000

Shear web thickness is for a box type spar. For single web, double
it.

================================================== ======================

[links snipped]
Here are some (on topic - no less) doodles of a small low wing.
inspired by Bruce King's tiny little BK-1..

http://home.earthlink.net/~cavelamb

http://www.homebuilt.org/kits/littner/cp80.html

Does look darn close but the Zephyr is a bit larger
at 19+ span and 17' long.

I just uploaded a cross section sketch that shows the
size a little (intended as a pun) better.

http://home.earthlink.net/~cavelamb/l-one-2x.jpg


Looks like a bigger version of this:

http://members.shaw.ca/gnat/1views.html
Gnat GK-7
Continental 4A084 military standard engine
(Est.) Empty Weight: 250 lbs.


Montblack