val77 Posted August 1, 2012 Share Posted August 1, 2012 (edited) hello to allat the end of the week I will launch my parachute flarelook 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 Link to comment Share on other sites More sharing options...
dagabu Posted August 1, 2012 Share Posted August 1, 2012 (edited) 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 Link to comment Share on other sites More sharing options...
val77 Posted August 1, 2012 Author Share Posted August 1, 2012 (edited) hello dagthe 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 Link to comment Share on other sites More sharing options...
val77 Posted August 1, 2012 Author Share Posted August 1, 2012 (edited) parachutes say plastic bags are not very ecologicI 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 Link to comment Share on other sites More sharing options...
dagabu Posted August 1, 2012 Share Posted August 1, 2012 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 Link to comment Share on other sites More sharing options...
val77 Posted August 1, 2012 Author Share Posted August 1, 2012 gampi paper is verry more expensive ? whas the price ? and skylantern paper is verry good ? Link to comment Share on other sites More sharing options...
val77 Posted August 1, 2012 Author Share Posted August 1, 2012 what type of paper is used in rocket parachutes sold to the public ?gampi ? or other paper ? Link to comment Share on other sites More sharing options...
asilentbob Posted August 1, 2012 Share Posted August 1, 2012 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. Link to comment Share on other sites More sharing options...
val77 Posted August 2, 2012 Author Share Posted August 2, 2012 hellothink 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? Link to comment Share on other sites More sharing options...
val77 Posted August 2, 2012 Author Share Posted August 2, 2012 (edited) no responses ? y making the rocket in 2 days.... Edited August 2, 2012 by val77 Link to comment Share on other sites More sharing options...
Mumbles Posted August 2, 2012 Share Posted August 2, 2012 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. Link to comment Share on other sites More sharing options...
val77 Posted August 2, 2012 Author Share Posted August 2, 2012 hello mumblesyes 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 parachutedo not worry I research but in France the silk paper and Gampi is uncommon ... Link to comment Share on other sites More sharing options...
val77 Posted August 2, 2012 Author Share Posted August 2, 2012 I HAVE TO FINDin fact you have to use crepe paper that is sold in France and is used for decoration and skylanternsjust crumple it and smooth and gives it a soft texture I'm luckyfor 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! Link to comment Share on other sites More sharing options...
Short5 Posted August 3, 2012 Share Posted August 3, 2012 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. Link to comment Share on other sites More sharing options...
Short5 Posted August 3, 2012 Share Posted August 3, 2012 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. Link to comment Share on other sites More sharing options...
val77 Posted August 3, 2012 Author Share Posted August 3, 2012 this is aluminium paper ? but whas Mylar ? Link to comment Share on other sites More sharing options...
val77 Posted August 3, 2012 Author Share Posted August 3, 2012 PROJECT ADVANCEI 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 ? 1 Link to comment Share on other sites More sharing options...
THEONE Posted August 7, 2012 Share Posted August 7, 2012 It looks really nice Link to comment Share on other sites More sharing options...
alexthegreat00 Posted August 16, 2012 Share Posted August 16, 2012 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. Link to comment Share on other sites More sharing options...
val77 Posted August 31, 2012 Author Share Posted August 31, 2012 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 Link to comment Share on other sites More sharing options...
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