Vertical axis sail windmill plans 21 493

A project of Volunteers vertical Axis Sail in Asia '-11 'lm Published by: Low Energy Systems 3 Larkfield Gardens ...

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A project of Volunteers

vertical

Axis

Sail

in Asia

'-11

'lm

Published by: Low Energy Systems 3 Larkfield Gardens Dublin 6 Ireland Paper copies

are $ 4.00.

Available from: Low Energy Systems 3 Larkfield Gardens Dublin 6 Ireland Reproduced

by permission

of Low Energy Systems.

Reproduction of this microfiche document in any form is subject to the same restrictions as those of the original document.

,’ i

3 Larkfield Dublin Ireland

PLANS. VERTICAL AXIS SAIL WINDMILL

6

Gardens

A remark

of

He suggested

Buckminister

windpower

would

.oncs

came

that

but

it

in

the

I

was

the

to

out

a rigid

to

going

was

the

to

vanes.

The

clumsy

in

t?lc

result opcratio'n,

solution.

the

study

was

that

using a rotor

Further

cf

ships. sailing

The clippsrs,

offered

most

help

,

rotor

clear

Another of

the

me.

development

sailing

are

yacht

to

for

design,

a very

it.

returning

of

a Savonius

without

possibility

avenue

sailing

construct

build

likely

immediately

modern

frame,

was

from

mind of

kept

most

oome

evol.ution

set

elegant

the

that

FuJ.ler

from

idea

of

cIoth

how

exactly attractrve

thought

that

was

wind

itself

to

the that

worked,

experiments

but lead

using

shape was

to

I the

a little

a more

.

The

rotor

tally about

at

which

is

spar

';wo

The

trailing

the

ends

consists equal

this

of Ii:ach

positioned rigid

edge of

the

rncrc

is

of

the

leading

ribs

are

the

spars.

from a cl.oth envelope. ._._ ____.-__-....- -.-.-..--- -K --,-.

. axis.

formed ecise is

sL!rface

Other

flexible

It

from of

attached

sailwing The

mounted

Liailwillgs

a vertical

sailwirlg

at

more

or

fIToni

distRIlce

axis. or

two

rotates

a rigid

the

at

lie12

vcrti-

sail.

right

in

spar, To

this

angles.

tension

between

of materia.1

could

be

used.

_ -..

;

. ;

bag.2

.’ c

Diag.1 When the foil

shape

ring

rotation

stantly

wind with

of

from

one

rotor

to

the

B-.-L...o_ther

sailwing angle

rotor

side

to

the

resnects.

of

like

attack,

other

positions rotor',

it into an

During

of to

the

rotor.

which

with

complete

it

at J-t is

Lo\: is

surface

enables

ths

r.p.m.

for

self

si.:nilar

conrevo-

concave

This even

up an airwind. DU-

airfoil

the

automatfcally. torque

takes the

one

sailwing'switchcs

a positive

Darrieus

sailwing fi*cCng

behaves

the the

developc all

on the stirface

a concave the

practically unlike

impinges

changing

lution

a* ..’ ______.-_ ----.--------.-- ...- ___---C_..-

_

starting in

some 2

. .

A feature of

the

during

which

sail

is

shii‘ts

its

from

This

has

ihe the

relative

_..__.

is

t;‘niling to 'the

b~?lly

effect

of

reducing

the

_

___-

---.

tends

-.

to

. ____.-_..

-_.

delay

em-...

..-*

h

.__.-._

the to

c;lt~;r? is

due

This

th:\t

relative

wind

wind.

_

ir:!port;mcn position

The.

rotation.

away

of

trailing the

a::e!.e the

lc;~ding

daf'.Lci:ted

developed

to by

of

attack

side

sail. of

_--.

t;le

the

of

___...__.......

cc-lc:~

the

the

stalling

__..,___.____

ccl;::?

I_..

.;ai.i,

..-

.I.

.

.-

.

i’

i

-

-

--

._ _._

_-

posi-i;ioil of _-_ ._. _

_..--. -._--._. .._. _ _

sail

-.

frame. .^.

TOWER:

The

main

There

framework

the

pieces

can

be used

together.

own,

with

or

wood

The

base

is

secured

two

bolts

and

nuts

on

each

plates

which

two

sacks

quired.

A mix

6 parts

ballast

The

anchors

The

dimensions

they

should

what

is.

Maybe

is

about

angle or

by foot

(sand

be

bolts

means to

the

in

the

of

get

is

for

an

of

anything

present it

IO

mm steel. than

can be

be altered

used.

some

made up

axle

mixed)

larger can

to

although

shape

parts

re-

cement

critical

The

hubs

be

aggregate

up

not

if

scrap

to

and

be made are

will

I part

workshop.

difficulty.

in

your

local

Fiske

sure

to

tell

and

that

it

needs

straight.

Alternatively, metal

of

and

engineering be

right

anchored

cement

specified.

axle

it

of

can

some

One way

to

screws

foundations.

About

them

are

fastening

screws

nuts.

The

of

wood

and

concrete

AXLE:

Large

on their

brackets

metal

FOUXDATION:

constructed

20 x IOcm. timbers. a number of ways of

are

metal

is

might

a composite be attempted.

of

wood

and

GUYS :

Use

two

each

eye

pole

bolts

as near

the

top

of

as possible. 23

Four

cables

llbulldog ends

are

tied

grips" of

T each,

to

. f- t % w inserted

the

thimbles

to

using

the the

secure

cable, in

with the

loop.

lQ

The

"strainers

using

go at

thimbles

Bulldog

grips

strainers

to

2 m.

angle-iron

used

as

some

concrete

and

can the

the

bulldog

be

used

cower

end,

again

grips.

to

s ecure

the

anchors. (fencing

an anchor. should

If

post) the

soil

be added.

can is

be soft

SAIL

FRAME:

It

is

constructed

conduit It

(galvanised

is

bent

to

-

see

machine tile

the

was made at

the

bent.

$?imilarly

are

made

gunbarrel Holes

are

to

fastened

to

brackets. single means

the

of

making

the

sail

on

mark The

mark

$ wheel it

second

is

being

mark

and

bend.

take

hubs.

frames

joint

bolts

arms

for

are

by means

fastened this

Although

be better.

the

The

could'be the

96cm

SW might

to

made

mark.

20mm conduit.

of

although

the

Another

while

the

from

the

They bolt

of tube

drilled

fastening

the

to

was

first

with

angle

tubing

is

end.

the

with

right

These

one

the

second

thing 2 mark

beginning

supports

or

between

bends.

made

bending

plumber

important

cm from

is

which the

ROTOR ARMS:

108

bend

just

local

96 cm from

pipe).

a pipe

correct the

welded

using

yollr

of

tube

first

shape

distance

beginning

20 mm electrical seamed

The

electrician. get

of

would rigid.

by need

of one some

I-IEARINGS:

These are

are fastened

bolts

to

plummer the

Make

each.

sure

and

Mood bearings

from

loading

The

take

sail

is

through

which

is

by

and

stitching

The

trailing

the

could

with

two

extra

loops

sail

sail

frame

is

the

front

back doubled

and

used

if

vertical

The

pocket

inserted edge

up canvas.

the

two

inside

with

are

frame

strong but

the

to

is

cords

would to

strong.

easily is

cord

to which

withstand

better too

secured

by

which

then miil

axle

sides

are

a hem.

I: . --.--. L

cord

loops

need

reinforcing.

The

It

the

the

canvas.

cord

corners

loaded

be

oR

The

2

some problems,

- edge

reinforced

of

from

turning the

be

weight

present

made

with

can

although

hardwoocl, might

made

the

which

pieces

they

to

rotor.

blocks

cross

vertically made

SAIL:

standard

another

after

normal

the

ends

is

+:orking

under

make

the

cord

You

can

repair

matter.

the

sufficiently

snap

a storm,

of

storm

tension, conditions

too

light the

a wrecked

broken wind-

IlRTERIiU,S.YTOWER:

2-

2Ocm x IOcm

x 5*5ru

timbers

2-

20cm

x IOcm

x 3.7m

timbers

4-

right

angle

brackets

IOmm x I3Omm Bolts,

20I-

creosote

2-

Eye

8-

Turnbuckles

I-

Reel(s)

of

1616-

Rulldog

grips

GUYS:

6-

nuts,

washers

preservative.

bolts,

nuts,

washers

guy

wire

(strong)

l+mm

Thimbles Steel

poles

(1.5m

-

2m)

FOUNDATION: .

0.35m3

SAIL

2-

sacks

2-

anchor

of of

ballast

cement

plates

FRAP1E: 4-

3m lengths

of

galvanised

conduit

20mm.

4-

3m lengths

of

galvanised

conduit

20mm

ROTOR AREIS: or

AXLE:

HEARINGS:

SAILS:

2-

20ft

lengths

of

8.

'%eeklampsll

I-

2m x 2.5cm

2-

22 x 22 x Icm

16-

6 x &Omm bolts,

+,I gun

+I1 (will

diam.

Plummer

4-

IO

4-

1 m x 1.3m

canvas

-

Light

~131~1

-

Twine

x

ISO

cord

(to

Bolts,

nuts,

20mm conduit)

rod. plate.

nuts,

2-

blocks

fit

steel

steel

barrel

washers.

fit

axle) washers.

‘1 ‘\

,-,.“I’

\

I I’ ‘,_ /

/’

/

-i-

.:

BRACKETS .

.

6

AXLE & HUBS I i

I

..-.--33cm_-)

---

AXLE

--

I

1

..

-i(

HUBS

:

Q

-.-.

/

ROTOR Y

a x

, ,Y

-.

---__---__-

j..95Wk

-- --

.._.

IJ

,

U/V

RATIO:

-1

Rt'\TE OF ROTATIOK :

FRONTAL

AJtE:h:

20 to

2.7mxI.3m

6Or.p.m.

=

3.51,*

optim-um

~3Oc.p.m.