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AV8ORJWC
Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"
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 Posted: Mon Nov 06, 2006 6:36 pm Post subject: Night before the big election - Flutter Article |
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Great article on Pages 98-101 of the September 2006, addition of Sport Aviation. One passage I found of value was “What some pilots and aircraft owners may not realize is that simply repainting can add sufficient weight to unbalance the ruddervators and make them susceptible to flutter”. We learned in school that all control surfaces ALWAYS get balanced after paint.
I continue to take exception to the position that VANS aircraft do not need to be balanced and ignoring that Part 147 advise is okay.
Worthy of consideration even if you guys aren’t posting any acknowledgment.
John Cox
#40600
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Rick S.
Joined: 12 Feb 2006
Posts: 347
Location: Las Vegas
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| Posted: Mon Nov 06, 2006 7:09 pm Post subject: Night before the big election - Flutter Article |
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I agree with you John,
I was surprised to not see procedure for balancing in the plans. I would love to see a writeup to explain how it is supposed to be done. I have never and plan never to have it happen but I did have a 1/4 scale R/C model, a big biplane experience flutter on the first and last flight while in a dive. It happened so fast that I could not take any action before the top wing ailerons flew right off, taking the top wing covering with them, within seconds the bottom wing did the same thing. Only warning was what sounded like a big bumble bee followed by floating wing parts...and that awful thud as it hits the ground.
Rick S.
40185
do not archive
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Rick S.
RV-10
40185 |
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indigoonlatigo(at)msn.com
Guest
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| Posted: Mon Nov 06, 2006 7:22 pm Post subject: Night before the big election - Flutter Article |
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Thank you for the reminder even if your message was only found in the
beginning of your subject. Who could forget!
JOhn G.
| Quote: | From: "John W. Cox" <johnwcox(at)pacificnw.com>
Reply-To: rv10-list(at)matronics.com
To: <rv10-list(at)matronics.com>
Subject: Night before the big election - Flutter Article
Date: Mon, 6 Nov 2006 18:35:19 -0800
Great article on Pages 98-101 of the September 2006, addition of Sport
Aviation. One passage I found of value was “What some pilots and
aircraft owners may not realize is that simply repainting can add
sufficient weight to unbalance the ruddervators and make them susceptible
to flutter”. We learned in school that all control surfaces ALWAYS get
balanced after paint.
I continue to take exception to the position that VANS aircraft do not need
to be balanced and ignoring that Part 147 advise is okay.
Worthy of consideration even if you guys aren’t posting any
acknowledgment.
John Cox
#40600
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| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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AV8ORJWC
Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"
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| Posted: Mon Nov 06, 2006 7:36 pm Post subject: Night before the big election - Flutter Article |
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I will post the standard procedure taught in school, after the dust
settles from tomorrow. The production jig (frame) is the only hard
part. The balancing is easy. It's as simple as balancing those main
wheels after remounting the low pressure tread and tubes which seam to
peal off the valve stems on landing.
Everyone knows what the orange dot on the side of the tire is for...
Right?
I will continue to wait for a reason other manufacturers makes and
models can do 200 kts but the RVs will suffer flutter at 181.0 knots
instead of 200.0 + knots. What do those Evo and Rocket guys know that
we are not discussing.
John
--
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AV8ORJWC
Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"
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| Posted: Mon Nov 06, 2006 7:37 pm Post subject: Night before the big election - Flutter Article |
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I'm sure trying.
JC
--
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indigoonlatigo(at)msn.com
Guest
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| Posted: Mon Nov 06, 2006 8:17 pm Post subject: Night before the big election - Flutter Article |
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Was this the Great Planes Pitts 1/4 scale ARF? They had to reset the
predrilled hole locations for mounting the top wing to the struts.
JOhn G.
| Quote: | From: Rick <ricksked(at)earthlink.net>
Reply-To: rv10-list(at)matronics.com
To: rv10-list(at)matronics.com
Subject: Re: Night before the big election - Flutter Article
Date: Mon, 6 Nov 2006 19:09:10 -0800 (GMT-08:00)
I agree with you John,
I was surprised to not see procedure for balancing in the plans. I would
love to see a writeup to explain how it is supposed to be done. I have
never and plan never to have it happen but I did have a 1/4 scale R/C
model, a big biplane experience flutter on the first and last flight while
in a dive. It happened so fast that I could not take any action before the
top wing ailerons flew right off, taking the top wing covering with them,
within seconds the bottom wing did the same thing. Only warning was what
sounded like a big bumble bee followed by floating wing parts...and that
awful thud as it hits the ground.
Rick S.
40185
do not archive
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http://www.matronics.com/Navigator?RV10-List |
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Rick S.
Joined: 12 Feb 2006
Posts: 347
Location: Las Vegas
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| Posted: Mon Nov 06, 2006 8:30 pm Post subject: Night before the big election - Flutter Article |
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"Orange dot on the tire"....Where the valve stem exits the rim right?
Rick S.
40185
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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_________________
Rick S.
RV-10
40185 |
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Rick S.
Joined: 12 Feb 2006
Posts: 347
Location: Las Vegas
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| Posted: Mon Nov 06, 2006 8:30 pm Post subject: Night before the big election - Flutter Article |
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Close John!!
It was the Super Aeromaster....
Rick S.
40185
do not archive
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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_________________
Rick S.
RV-10
40185 |
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Deems Davis
Joined: 09 Jan 2006
Posts: 925
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| Posted: Tue Nov 07, 2006 9:08 am Post subject: Night before the big election - Flutter Article |
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Now that's a graphic reinforcement/reminder!
do not archive
Deems Davis # 406
Finishing - ( A Misnomer ! )
http://deemsrv10.com/
Rick wrote:
| Quote: |
I agree with you John,
I was surprised to not see procedure for balancing in the plans. I would love to see a writeup to explain how it is supposed to be done. I have never and plan never to have it happen but I did have a 1/4 scale R/C model, a big biplane experience flutter on the first and last flight while in a dive. It happened so fast that I could not take any action before the top wing ailerons flew right off, taking the top wing covering with them, within seconds the bottom wing did the same thing. Only warning was what sounded like a big bumble bee followed by floating wing parts...and that awful thud as it hits the ground.
Rick S.
40185
do not archive
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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