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  #51  
Old 01-06-2016, 09:12 PM
rockwoodrv9 rockwoodrv9 is offline
 
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Location: Meridian ID, Aspen CO, Okemos MI
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Quote:
Originally Posted by cmtealoysio View Post
Ok, I will send a photo to your e-mail. Regards!
Thanks! I got the photo. Very interesting. Thanks again
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  #52  
Old 01-10-2016, 04:00 PM
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tfoster100 tfoster100 is offline
 
Join Date: Feb 2011
Location: Southlake, TX
Posts: 85
Default Photo

Can you post the photo on this thread?

Thanks
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  #53  
Old 07-28-2016, 07:40 AM
n601sc n601sc is offline
 
Join Date: Jan 2005
Location: Dayton, OH
Posts: 19
Default Kindly send or post photos of your BRS install

Hello, wife says BRS is required equipment in potential new -9 build, so I'm looking at options.
Thanks
Steve Campbell
RV-6 (sold in '07)
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  #54  
Old 07-28-2016, 11:39 AM
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joedallas joedallas is offline
 
Join Date: May 2010
Location: Spring Hill Fl
Posts: 734
Default Light sport should be 1400 Lbs

This would be a good reason to move light sport to 1400 LBS
BRS Emergency parachute and a real aircraft engine.

My view


Joe Dallas
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  #55  
Old 07-28-2016, 12:14 PM
rv9builder rv9builder is offline
 
Join Date: Jan 2005
Location: Irvine, CA
Posts: 873
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Here?s one for the RV-7/7A and 9/9A.

http://www.aircraftspruce.com/catalo...ry13-14785.php

Click on the documents tab and there?s a PDF that shows how to install it.
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  #56  
Old 07-28-2016, 12:51 PM
Canadian_JOY Canadian_JOY is offline
 
Join Date: Aug 2007
Location: Ontario, Canada
Posts: 2,291
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A couple of real-world points to consider...

Glasair has developed a BRS for their popular Sportsman 2+2 aircraft. It is available fitted to the aircraft during the Two Weeks to Taxi program, or as a factory-retrofit for existing aircraft. It is not yet available for homebuilder installation.

Here's a video of a ground test:
https://www.youtube.com/watch?v=6NQRYkIcj4c

Cost is about $34K installed, and about a 50lb hit on useful load.

One area of design which I don't think I saw covered in this discussion is passenger safety as a result of energy-absorbing seating design. This is a very important area, and is a key ingredient in the success of the Cirrus system. In the case of the Glasair Sportsman, the seat cushion design is already well on its way to being a very good energy-absorbing design, and the overall crashworthiness of the airframe has resulted in several folks walking away from what would have been an unsurvivable accident in other aircraft types. If installing a BRS, please do give consideration to the seating and ensure it is able to absorb high vertical loads, lest you survive the impact only to have your spinal column crushed.
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  #57  
Old 07-28-2016, 07:26 PM
n601sc n601sc is offline
 
Join Date: Jan 2005
Location: Dayton, OH
Posts: 19
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Canadian-JOY, that's a very valid point. With the seats being (essentially) on top of the spar / carry-through structure in the 6s/7s/9s), there is very little room (just a few inches of seat cushion) for energy absorption. Might the 8 or 14 be a better contender; I think the 8 has much thicker seat cushions? Of course, routing the lines to the '4-corners' would also pose some challenges. Presumably, they'd run on the exterior of the skin covered with fiberglass fairings of sorts.

Frankly, I think Van's missed the boat in this regard with the 12 & 14. You folks likely read the recent article about the positive trend with Cirrus CAPs deployments. It's difficult to argue against a properly designed and utilized BRS system. In my case, the lack of a BRS offering may drive me away from taking on another RV project.

Not to beat the proverbial dead horse here, but any additional technical insight regarding the energy absorption requirements and methods to mitigate spinal compression (or other probable injuries) would be much appreciated.
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  #58  
Old 07-28-2016, 07:32 PM
n601sc n601sc is offline
 
Join Date: Jan 2005
Location: Dayton, OH
Posts: 19
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rv9builder, Ah - thanks for the link to the offering in AS&S Co. Apparently, my line of thinking about routing the straps under fiberglass firings is already put to fruition.
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  #59  
Old 07-28-2016, 07:46 PM
BobTurner BobTurner is offline
 
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Location: Livermore, CA
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Quote:
Originally Posted by Canadian_JOY View Post

Cost is ... about a 50lb hit on useful load.

.
And there's the issue. For a lot of planes that can seriously impinge on what you can or cannot do in the plane. So some cheat on the gross weight limits. And a few are then taken by surprise by the higher stall speed, or reduced climb rate. How many? I have no idea, but I doubt it's zero.
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  #60  
Old 07-28-2016, 08:17 PM
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rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by n601sc View Post
Canadian-JOY, that's a very valid point. With the seats being (essentially) on top of the spar / carry-through structure in the 6s/7s/9s), there is very little room (just a few inches of seat cushion) for energy absorption. Might the 8 or 14 be a better contender; I think the 8 has much thicker seat cushions? Of course, routing the lines to the '4-corners' would also pose some challenges. Presumably, they'd run on the exterior of the skin covered with fiberglass fairings of sorts.

Frankly, I think Van's missed the boat in this regard with the 12 & 14. You folks likely read the recent article about the positive trend with Cirrus CAPs deployments. It's difficult to argue against a properly designed and utilized BRS system. In my case, the lack of a BRS offering may drive me away from taking on another RV project.

Not to beat the proverbial dead horse here, but any additional technical insight regarding the energy absorption requirements and methods to mitigate spinal compression (or other probable injuries) would be much appreciated.
Thickness of a seat cushion is just a very small part of vertical impact safety. In fact, if made of the wrong material, a thick cushion could be much more dangerous than a properly engineered thin cushion.
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