parachute size for typhoon H ?

[Gurusonwheels]

can somone tell me what is the Brand and size of a parachute
that will pack in a 2 inch tube nicely and support the H at a decent decent rate .

looking at all the manufactures all chutes of the same size do not have

same decent and packing ability .

just wondering looking for a chute that will fit
in a 2inch x 4 inch tube .

any ideas ?

 

[HedoBum]

I would think you would want to be thinking more about weight and drag coefficient.
You don't want to add a lot of weight to your flights but you want something that's going to bring your disabled H safely to earth.
AGPtek has one that's only 4.8oz (40" chute) that should fit your parameters.
Amazon.com : AGPtek Speed Training Resistance Parachute - Small (40" Size), 15 lbs of resistance, Fit up to a 42" waist : Football Sleds Chutes : Sports & Outdoors
You'll likely want to alter the support lines to be more compact and lighten it a bit.
Hopefully your deployment system is relatively light weight.

 

[Gurusonwheels]

Calculator Summary
Summary
Primary Chute
Compare Chute
Model: IFC-48-SUL
Target Weight (lbs): 5
Descent Rate @ Weight (fps): 12.52
Descent Rate Equivalent Fall Height (ft): 2.44
Impact Energy (j): 16.52
Parachute Metrics


Chute Style: Iris Ultra Compact Light Weight with Spectra lines
Canopy Shape: annular
Canopy Diameter (in): 48.0000
Diameter Spill Hole (in): 8.4480
Number Gores: 8.0000
Rating @ 20fps (lbs): 12.7500
Rating @ 15fps (lbs): 7.1700
Weight oz: 2.6200
Weight grams: 74.4000
Packing Volume (in^3): 14.56
Area Projected (sq ft): 12.1771
Area Canopy (sq ft): 21.6752
Cd Projected: 2.2000
Cd Area Canopy: 1.2400
Equivalent Flattened D (in): 63.0403
Performance Ratio 20fps (rating @ 20fps / weight): 77.8700
Performance Ratio 15fps (rating @ 15fps / weight): 43.8000
Manufacturer: Fruity Chutes

looking at this chute i like the 12.52 fps at 5lbs and the small packing volume of 14.56 ...
but the price is crazy . 200$

anyone know of a chute that would have similar specs at lower price ?

 

[Richk]

Your also going to have to figure out how to deploy it . I think most are tied into the electonic system to deploy on system failure and stop the props once deployed

 

[Steve Carr]

I suspect any chute will deploy just seconds after the bird hits the ground.

 

[Richk]

I suspect any chute will deploy just seconds after the bird hits the ground.

AH the old impact release button...lol

 

[PatR]

Even the servo actuated, spring release systems need ~80'-100' of altitude to fully deploy. They don't land all that gently. Hope for tall grass.


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[iride4u]

Suggestion learn how to fly the H and if and when you do have a crash get the parts and repair it. That's what I did when mine went down. If you lose a prop land the H as soon as possible.
I can see nothing but trouble trying to add a parachute.

 

[Richk]

I really doubt Yuneec is going to give you access to the code you'd need to make a chute work. It's a lot more than sticking it on the H

 

[slick]

They have uav deployment and shoots on eBay but complete just not cheap

 

[Gurusonwheels]

my personal take on it is stopping the props is not a issue as the only time i would think you need a parachute is when they are already stopped .
chute is not going to save you from running into the tree or building . or from trying crazy stunts like flying to fast to close to the ground .

chute is mainly for piece of mind at higher altitudes incase of battery failure or system board failure at which case the props will be off .

a mayday deployment system is really all you need for the H senses a fall and deploys .

just my 2 cents .

of course everyone has there reasons for using one .

 

[samsflite]

If you have a major system failure (like battery failure for example) while in the air filming it's coming down camera first and you won't have the landing gear down. A chute probably won't save the camera (one of the most delicate and expensive bits to replace) no matter how early it's deployed or how slow it falls....I'd say it's a waste of money personally.

 

[Gurusonwheels]

exactly why you do not rig your chute where it will land this way . at 12 feet per second it only like dropping the drone from 4 feet high . . something may break .. but im sure it would be alot worst dropping from 100 feet without anything . does not sound like a waste of money .. but thanks for your personal opinion .

 

[mcbutler]

Hang gliders and microlights use a rocket deployment system.
Problem is as the H falls it is essentially a blunt pancake falling through the air. As the air passes over the H it will develop a low pressure area on the top around the GPS aerials. This will prevent any chute simply deploying unless you can throw a drogue shoot clear of this vacuum to drag the main chute out.
If your going to use a forced chute ejection system, fit it on the bottom somewhere and it will 'land' the H upside down and save your camera (probably).

 

[Bert2006]

Not that I recommend the brand, but Hubsan makes a chute for one of their latest drones. Here are a few links from eBay: (Hope this is allowed here?)
Free Shipping HUBSAN x4 pro H109S parachute(DJI parachute suitable) | eBay
http://www.ebay.com/itm/NEW-Hubsan-...301524?hash=item4d3f1c4e94:g:TlwAAOSw--1WtP0a

 

[Jester]

Even the servo actuated, spring release systems need ~80'-100' of altitude to fully deploy. They don't land all that gently. Hope for tall grass.


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That's it...I'm running out to my shop to start drawing up plans for a helium cell. I know my luck and if the TH dies I'm sure it'll always be under 80'-100' feet when it happens.