Chute shroud lines

The Rocketry Forum

Help Support The Rocketry Forum:

Joshua Westbrook

Frizzlebeard
Joined
Sep 16, 2019
Messages
80
Reaction score
24
Likely a noob question but I gotta ask it.

Why are the shroud lines so short when you order a chute from apogee for example? Is it to reduce drag or save cost?

I re-tied my plastic chutes to longer lines for full effect and better drag. I think they are roughly 24-30 inches of line. I will get photos this weekend when I get home.
 

jazzviper1

Well-Known Member
Joined
Mar 27, 2011
Messages
697
Reaction score
40
Here is what Fruity Chutes says, although their is a real parachute, as opposed to what most low power kits contain which is a parasheet (which needs to be pronounced carefully.)

They use 1.15 diameter for each single shroud line

https://fruitychutes.com/help_for_parachutes/how_to_make_a_parachute.htm
Sorry for butting in but there is no such thing as a parasheet. The word parachute is French para=shield + chute=fall. Literally ant object that shields from a fall can be called a parachute.
Many real parachutes can be laid out flat.
 

jazzviper1

Well-Known Member
Joined
Mar 27, 2011
Messages
697
Reaction score
40
Here is what Fruity Chutes says, although their is a real parachute, as opposed to what most low power kits contain which is a parasheet (which needs to be pronounced carefully.)

They use 1.15 diameter for each single shroud line

https://fruitychutes.com/help_for_parachutes/how_to_make_a_parachute.htm
Sorry for butting in but there is no such thing as a parasheet. The word parachute is French para=shield + chute=fall. Literally ant object that shields from a fall can be called a parachute.
Many real parachutes can be laid out flat.
 

BABAR

Builds Rockets for NASA
TRF Lifetime Supporter
TRF Supporter
Joined
Aug 27, 2011
Messages
5,462
Reaction score
975
Sorry for butting in but there is no such thing as a parasheet. The word parachute is French para=shield + chute=fall. Literally ant object that shields from a fall can be called a parachute.
Many real parachutes can be laid out flat.
https://www.rocketreviews.com/parasheet-180703140820.html
https://www.apogeerockets.com/education/downloads/Newsletter183.pdf
http://scottbryce.com/parachute/spherical_parachute.html
http://www.unm.edu/~tbeach/IT145/week05/parts.html
Also Handbook of Model Rocketry , 7th edition, page 181
 
Last edited:

AfterBurners

Well-Known Member
Joined
May 8, 2012
Messages
7,305
Reaction score
271
Location
Dallas Texas
A good rule of thumb for most is the length should be equal to the diameter, but I'm sure if the lines are longer it won't matter much. When I tie my lines on plastic chutes I always make sure the lines doesn't cinch on the plastic chutes because this tends to tear the chute up so I always makes sure that ther is gap between the knot and the chute.
 

Handeman

Well-Known Member
TRF Supporter
Joined
Jan 18, 2009
Messages
7,580
Reaction score
191
Location
Stafford, VA
The only chutes I've bought are the ones that come with kits. I make all of my larger ones. I use shroud lines 1.5 x the chute diameter. I've found that the longer length reduces the amount of swinging that happens and stabilizes the chute much better. Of course a center spill hole helps that a lot too.
 

crossfire

Lifetime Supporter
TRF Lifetime Supporter
Joined
Jan 16, 2011
Messages
3,893
Reaction score
293

BABAR

Builds Rockets for NASA
TRF Lifetime Supporter
TRF Supporter
Joined
Aug 27, 2011
Messages
5,462
Reaction score
975
The word parachute is French para=shield + chute=fall. Literally ant object that shields from a fall can be called a parachute.
So if your paraCHUTE doesn’t open,you say, “oh shoot.”
If your paraSHEET doesn’t open........
 

dhbarr

Amateur Professional
Joined
Jan 30, 2016
Messages
6,205
Reaction score
885
Sorry for butting in but there is no such thing as a parasheet. The word parachute is French para=shield + chute=fall. Literally ant object that shields from a fall can be called a parachute.
Many real parachutes can be laid out flat.
A bike helmet. Rubber playground padding. My wrists. A balustrade.
 
Top