parachute flare :)

[val77]

hello to all

at the end of the week I will launch my parachute flare

look at the sketch

 

 

give your opinion and your advice whether to improve something;)

http://i37.servimg.com/u/f37/16/97/86/45/parach10.jpg

Edited August 1, 2012 by val77

[dagabu]

Val,

 

I don't see any wadding to protect the chute, is the cup made to go all the up the sides? Nice drawing BTW!

 

-dag

Edited August 1, 2012 by dagabu

[val77]

hello dag

the design is achieved with paint

I do not use cotton wool but a cardboard disc that covers your parachute (I take a test) and it protects perfectly brulures granulated black powder

Edited August 1, 2012 by val77

[val77]

parachutes say plastic bags are not very ecologic

I wanted to know what paper is used for parachutes and where I can buy because I live in France

Edited August 1, 2012 by val77

[dagabu]

The Japanese used to use Gampi paper but has become way too expensive. A good quality tissue paper works OK but can tear. I found that a cheap Chinese Lantern has lots of good paper for parachutes. I use cotton broadcloth with a little Borax wash and cut into 8 gores.

 

-dag

[val77]

gampi paper is verry more expensive ? whas the price ? and skylantern paper is verry good ?

[val77]

what type of paper is used in rocket parachutes sold to the public ?

gampi ? or other paper ?

[asilentbob]

Chances are that parachutes for parachute flares are likely made with a lightweight partially fire resistant cloth, not paper or plastic, unless that plastic is nomex or kevlar or something, which I think is unlikely since its cost could be prohibitive for mass manufacturing, unless for military where cost isn't an issue due to an over abundance of funds.

 

Perhaps thin silk? Maybe treated? There were an abundance of expired parachute flares for free at PGI one year... I took some apart, I know that much. I didn't save the parachutes though. The chutes had strings on the other edges going to a central point, where it was attached to a very light weight metal chain (or multi-filament metal wire) that was attached to the flare itself to put some distance between the two... maybe 8" or so.

 

I'd say a light weight tight weave of silk would probably be best for the chutes. I think some thin steel fishing line is available, that might work well for separating flare from chute, or maybe you could just use a length of flame resistant string like kevlar, nomex, vectran, spectra, dyneema, etc... hmm actually don't think dyneema is flame resistant, just high strength.

[val77]

hello

think that the paper sold in France which is called "crepe paper" for a 35 cm parachute? or you have a site that sells tissue paper for a good price?

[val77]

no responses ? y making the rocket in 2 days.... Edited August 2, 2012 by val77

[Mumbles]

It takes more than 5 hours for people to respond. Given that a majority of our members are from the US, you may need to spend some time and do some searching for suppliers on your own anyway. You don't necessarily need to be in such a hurry to make this. Make sure you are capable and confident to do it properly, otherwise there is a major fire risk. Fire this somewhere safe.

[val77]

hello mumbles

yes I'm confident because I'm already three parachute flares in the past;) and this one is the largest of all parachute flares

I will use for the plastic bag parachute

do not worry I research but in France the silk paper and Gampi is uncommon ...

[val77]

I HAVE TO FIND

in fact you have to use crepe paper that is sold in France and is used for decoration and skylanterns

just crumple it and smooth and gives it a soft texture

 

I'm lucky

for my rocket I'll put the English subtitles because you gave me help my rocket design

 

thank you to all members of this great forum!

[Short5]

Anything like a hankerchieif will work for a chute.

 

I had a neat thought, what about mylar for the flare chute? It would reflect the light like a mirror and is very light wieght. It tears easy if it has a start so you would need to tape the shroud lines on not tie them.

[Short5]

Here you go, a Mylar chute ready for shroud lines to be tied on. I cut a piece of Mylar and taped the corners with foil tape. I then punched holes in the foil tape for lines to be tied.It took about 15 minutes.

[val77]

this is aluminium paper ? but whas Mylar ?

[val77]

PROJECT ADVANCE

I finished making the parachute and attach the parachute flarelook at the pictures below

 

http://i37.servimg.com/u/f37/16/97/86/45/imag0011.jpg http://i37.servimg.com/u/f37/16/97/86/45/imag0012.jpg http://i37.servimg.com/u/f37/16/97/86/45/imag0013.jpg

 

 

 

http://i37.servimg.com/u/f37/16/97/86/45/imag0015.jpg http://i37.servimg.com/u/f37/16/97/86/45/imag0010.jpg

 

 

is good ?

[THEONE]

It looks really nice

[alexthegreat00]

What he used is called aluminized mylar. Mylar ar is a very thin and lightweight plastic. (I use quarter mil mylar for rocketry competitions when weight is vital.) The plastic is then coated in a few atoms of aluminum. It might give a nice reflection with the flare.

[val77]

y have maked a new lot of flares and parachutes

 

sorry for the bigger images

 

ehttp://i37.servimg.com/u/f37/16/97/86/45/imag0020.jpg

 

http://i37.servimg.com/u/f37/16/97/86/45/imag0019.jpg