Hi, yes, all nylon. Top Fight is 1.1oz nylon, which we use on our standard
and compact chutes. The Ultra Light chutes (-SUL suffix) use the 0.7oz RS
nylon.
What is the weight, and how fast do you want to come down? Packing length?
So you have all three body tube sizes? And what is the packing length?
A good rule of thumb for packing volume is to take weight in oz, and divide
by 0.17 oz / cu", and then you will have packing volume in cubic inches.
That assumes a tight and efficient pack.
So for 38mm ID the IFC-30-SUZ chute (26 grams) should go into 2.5"L. Chute
is rated at 1.25Kg @ 4.6m/s. Here is the descent rate calculator for the
chute. Plug in different weights and you can see the estimated descent
rate:
https://fruitychutes.com/help_for_parachutes/parachute-descent-rate-calculator?term=IFC-30-SUZ&weight=2.8
This is the smallest high efficiency Iris chute we make. It may do Ok in
24mm with a longer packing length, but 18mm is not possible for this chute.
For packing into 38mm ID it's done just like in this pictorial of the 40mm
od Harrier spring launcher:
https://fruitychutes.com/help_for_parachutes/harrier-product-help/pack-and-load-the-harrier-drone-parachute-launcher.htm
-Gene
- Regards
Gene Engelgau
Web: http://fruitychutes.com - Professional Aerospace Recovery Systems
Facebook: facebook.com/fruitychutes
Twitter: @fruitychutes
Cell: 408-499-9050
On Mon, Jun 14, 2021 at 8:23 AM James Dougherty <jafrado@xxxxxxxxx> wrote:
thanks Gene!
nylon?
what fits in an 18-29mm tube?
these are 1.0 mil
https://topflightrecoveryllc.homestead.com/thinmil.html
On Jun 14, 2021, at 6:03 AM, Gene Engelgau <gene.engelgau@xxxxxxxxx>
wrote:
Oh, if anyone wants to make there own I have plenty of scrap 0.66 Taffeta
and 0.7oz Ripstop. The 0.7oz fabric is custom made for us.
-Gene
- Regards
Gene Engelgau
Web: http://fruitychutes.com - Professional Aerospace Recovery Systems
Facebook: facebook.com/fruitychutes
Twitter: @fruitychutes
Cell: 408-499-9050
On Mon, Jun 14, 2021 at 6:00 AM Gene Engelgau <gene.engelgau@xxxxxxxxx>
wrote:
These are pretty much the ultimate in light weight and efficiency without
going to truly exotic materials like Cuben Fiber. But they are not
inexpensive due to the high cost of the 0.7oz material. The Drone market
loves them where weight is everything.
https://shop.fruitychutes.com/collections/iris-ultra-light-parachutes.
Here is a chute capable if 20Kg @ 4.6m/s (15fps) weight is 350 grams -
https://shop.fruitychutes.com/collections/iris-ultra-light-parachutes/products/iris-120-ultra-light-parachute-44bs-15fps
For little projects we have this:
https://shop.fruitychutes.com/collections/iris-ultra-light-parachutes/products/iris-30-ultra-light-parachute-2-6lbs-15fps
Chute weight is 38 grams.
We have another version called the IFC-30-SUZ, same capacity, weight is
26 grams. Not in the webstore but a stock product.
-Gene
- Regards
Gene Engelgau
Web: http://fruitychutes.com - Professional Aerospace Recovery Systems
Facebook: facebook.com/fruitychutes
Twitter: @fruitychutes
Cell: 408-499-9050
On Sun, Jun 13, 2021 at 3:45 PM James Dougherty <jafrado@xxxxxxxxx>
wrote:
Yep, I know what Monokote is, I have a few rolls for my RC plane :-)
On Sun, Jun 13, 2021 at 2:43 PM Rob Diehl <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
Be sure you don't get OS film mixed up with Monokote type film. OS
film is what you would want.
Monokote has a heat activated adhesive and shrinking properties. If
you accidentally use Monokote, your chute will come out as a ball of
plastic.
On Sunday, June 13, 2021, 02:06:39 PM PDT, James Dougherty <
jafrado@xxxxxxxxx> wrote:
"an ultra lightweight model airplane covering where it is known as OS
Film"
On Sun, Jun 13, 2021 at 2:05 PM James Dougherty <jafrado@xxxxxxxxx>
wrote:
Wow, gret discussion. .66 oz nylon does sound sexy, but hey, Mylaw,
gotta love it, emergency blankket material is cheap and really really
really unbelievable for what you can put in a small space. But ultra-thin
Mylar, now that is a hell of a meta-material.... 20 minute duration is
killer, I looked that up - and hey, check this out - 1/2 micron thick mylar
film for manufacturing capacitors - even has a dupont reference:
https://www.ebay.com/itm/113169978510
Now that would be killer, you could have a 6 footer in an 18mm tube,
well, maybe not, just dreaming :-)
On Sun, Jun 13, 2021 at 1:41 PM Curtis Sojka <curtis.sojka@xxxxxxxxx>
wrote:
Hefty trash bag...
On Sun, Jun 13, 2021 at 1:33 PM Eric Renger <ericrenger@xxxxxxxxxxx>
wrote:
That huge rotosail chute is a BAMA chute and it is just his standard
nylon he uses for his regular chutes. It really does have a lot of hang
time, but it’s mostly because it is oversized for the rocket. Because it
spins, it also tends to hang straight down and not oscillate at all, so it
looks very still on the way down.
On Jun 13, 2021, at 1:13 PM, James Dougherty <jafrado@xxxxxxxxx> wrote:
LOL. That's funny. I know what you mean, most of my chute criteri is
the same which is why I was asking ... but what was the chute you used on
the loft competition, was that a nylon chute? Was it a Bama chute? I
remember you had really good hang time ...
On the Q - It's pretty much silk and kevlar size 46 thread, but I will
let Gene debunk that, he is probably working with better synthetic material
these days.
On Sun, Jun 13, 2021 at 1:11 PM Eric Renger <ericrenger@xxxxxxxxxxx>
wrote:
I’m not sure what the thinnest material would be. Most of my chute
experience has focused on “coolest looking” not so much on performance.
Eric
On Jun 13, 2021, at 1:00 PM, James Dougherty <jafrado@xxxxxxxxx>wrote:
For reference I want to pack the largest chute possible
Does anyone know what is the thinnest material chute one can find?
in an 18, 29, 38mm tube. Hang time is critical, I want to get a giantchute in there. One thing I found was an old silk parachute
that I got from Aerocon, it was from an aerial flare. The material ismind-blowing, it is high quality silk but I have not found anything
like that, shocked to see this would just get burnt up, but I guessit is single use and probably just cheap silk.
of top-flite for that purpose). What is better?
Anyhow, what do people think is the smallest chute (I am still a fan
thank you
