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Dennis Thate
Joined: 18 Nov 2010
Posts: 362
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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 Posted: Sat Apr 23, 2011 5:47 am Post subject: BRS System |
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http://www.brsaerospace.com/advice_to_owners.aspx
Anyone know what the minimum altitude is for a BRS deployment parachute to
work effectively from ? I'm unable to find anything in their website.
Dennis T/Gang:
Don't know that you will find a minimum effective altitude. There are many
variables involved in time required to get a canopy from the time the BRS is
fired:
-Air speed.
-Direction of flight/movement through the air.
-Is the aircraft stable, tumbling, spinning, etc?
There are probably more factors, I am sure. My philosophy was to use the
parachute no matter what the altitude. I have two saves with a Jim Handbury
hand deployed parachute at 200 feet flying straight and level 75 mph, and
the second diving vertically from 500 feet. I don't know how high I was
when threw the parachute, but the video shows a full canopy is achieved just
above the trees.
Over the years I have discovered too many fatal accidents in Kolbs because
the parachute was never fired/deployed. It is imperative to practice the
activation procedure frequently to insure we will react appropriately in an
emergency situation. Time is the most important element. Don't waste a
split second.
john h
mkIII
Titus, Alabama
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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racerjerry
Joined: 15 Dec 2009
Posts: 202
Location: Deer Park, NY
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| Posted: Sat Apr 23, 2011 6:55 am Post subject: Re: BRS System |
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INCREASING YOUR ODDS
If you view the BRS web site, you will see testimonials regarding many successful deployments at or below 300 feet; in some cases much lower.
http://brsparachutes.com/lives_saved.aspx
If you view this video, you will begin to understand why low altitude recoveries are possible with the rocket/canister version of the BRS chute.
http://www.eaa.org/news/2010/2010-08-17_BRS-WingSeparate.asp
What you need to be concerned with is possible reasons for UNSUCCESSFUL deployment of the chute; there are a few:
1 Exceeding the parachute design speed limitations / delayed deployment
2 Misrouting or binding in the release cable / firing mechanism
3 Improper installation – not following manufacturers recommendations
4 Aircraft failure mode – wing failure blocking canister and preventing proper deployment
5 Pusher prop snagging parachute bridle / lines – kill engine or at least retard throttle before deployment with a pusher type aircraft
6 System / component degradation – moisture, corrosion, UV damage
The BRS chute system is not 100% fail-safe. It does; however, improve your odds of survival quite a bit.
The Firestar is a very strong and well engineered little airplane. Structural failure is exceedingly rare. When assembling and unfolding your aircraft for flight, use a CHECKLIST to insure that you have installed lock-rings on all clevis pins & cables. BTW, lock-rings do not snag on tall grass – safety pin types do! Don’t use miniature lock rings. I use small SS rings about one inch O.D. with large diameter wire from a marine supply store.
Setting up for flight while talking to you buddy and forgetting a clevis pin locking device is a vastly more likely scenario than a structural failure on a Kolb Firestar. Use the checklist religiously. I laminated mine and taped a copy inside the cockpit.
Do install the aileron mass balance weights to prevent flutter and possible aileron hinge damage/separation. The weights and use of a checklist will increase your odds for a safe flight much more than a parachute ever will.
Hug your Kolb at least weekly and Homer will smile on you!
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Jerry King |
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Sat Apr 23, 2011 7:08 am Post subject: BRS System |
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The weights and use of a checklist will increase your odds for a safe
flight much more than a parachute ever will.
Jerry King
I agree with the above statement 100%, in addition to many more requirements
for a safe flight. Once the parachute is deployed, the flight is over and
the pilot becomes a passenger.
john h
mkIII
Titus, Alabama
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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