VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #11  
Old 08-02-2020, 05:17 PM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
Default

Quote:
Originally Posted by wjb View Post
....Is this right, TAS? Section 15 of the builders manual specifies Vne at 230 MPH IAS (200 kt IAS) for the -7
There have been a number of discussions about this in the past few months, and at least one of Van's documents discusses it, too. Here is one of the VAF discussions.

Dave
Reply With Quote
  #12  
Old 08-02-2020, 06:34 PM
koupster's Avatar
koupster koupster is offline
 
Join Date: Dec 2013
Location: SLC, UT (KBTF)
Posts: 240
Default Flutter depends on true airspeed

Here's the article on Van's website
https://www.vansaircraft.com/faq/hor...epower-engine/

Cheers, David
RV-6A KBTF
Reply With Quote
  #13  
Old 08-02-2020, 08:27 PM
pilotkms's Avatar
pilotkms pilotkms is offline
 
Join Date: Mar 2007
Location: WARNER ROBINS, GA
Posts: 391
Default Yes TAS

Bill - this has been addressed many times here on VAF and in Van’s docs. I’m sure someone will cite the exact references. But, yes VNE for the 7 is TAS, NOT indicated airspeed.
__________________
Keith
RV 7A RV #9700 May 2017
N325KS the Flying “K”
Built in SoCal KCCB, now in GA @ KPXE
550+ Hours & 7X cross the USA
OSH flyin 2018 & 2019 & Petit Jean 2019
Reply With Quote
  #14  
Old 08-02-2020, 09:25 PM
Carlos151's Avatar
Carlos151 Carlos151 is offline
 
Join Date: Jan 2008
Location: Lebanon, TN
Posts: 275
Default

Quote:
Originally Posted by FrenchyRV-6A View Post
Made structure repairs to horizontal stabilizer of RV-6A per Vans service bulletin and repositioned empennage forward 1 inch to comply with plans.
Say what?!?!? “Repositioned empennage forward 1 inch“.
__________________
Karl Richcreek
RV-8
N151TK "La Otra Chica"
Flying as of August 14, 2015
TN26

Last edited by Carlos151 : 08-02-2020 at 09:30 PM.
Reply With Quote
  #15  
Old 08-02-2020, 09:45 PM
climberrn's Avatar
climberrn climberrn is offline
 
Join Date: Oct 2008
Location: Carson City, NV
Posts: 493
Default

What’s that old saying.....This thread is worthless without pics!!

We are all trying to figure out how you moved your empennage forward???
__________________
Joel

N626JA
RV-7A at CXP
Flying!
Reply With Quote
  #16  
Old 08-03-2020, 06:23 AM
FrenchyRV-6A FrenchyRV-6A is offline
 
Join Date: Aug 2017
Location: Colorado Springs, Colorado
Posts: 13
Default Rudder flutter

Fourth owner, 20 year old Oregon built airplane, no builder logs. Hard to read builders mind, but our A&P thinks that builder failed to trim fuselage skin so that empennage could contact rear bulkhead. Photo shows three and four 1/4 inch spacers used to attach to fuselage. Need help uploading pictures. Recovery just requires slowing down. No visible damage. Oscillation felt in rudder pedals and yaw fishtailing.
Attached Thumbnails
Click image for larger version

Name:	E495698D-5DF5-443E-A8A8-BC307CA752D5.jpg
Views:	268
Size:	236.5 KB
ID:	747  

Last edited by FrenchyRV-6A : 08-03-2020 at 08:26 AM.
Reply With Quote
  #17  
Old 08-03-2020, 06:53 AM
FrenchyRV-6A FrenchyRV-6A is offline
 
Join Date: Aug 2017
Location: Colorado Springs, Colorado
Posts: 13
Default

Attached Thumbnails
Click image for larger version

Name:	8D4E48B9-7959-4BB1-B890-67F3B6713E33.jpg
Views:	184
Size:	280.1 KB
ID:	748  

Last edited by FrenchyRV-6A : 08-03-2020 at 08:29 AM.
Reply With Quote
  #18  
Old 08-03-2020, 07:04 AM
Carlos151's Avatar
Carlos151 Carlos151 is offline
 
Join Date: Jan 2008
Location: Lebanon, TN
Posts: 275
Default

To add a picture just select the paperclip icon on the top row of the message box, browse for the picture you want to load from your computer, select upload. That's it.
New feature here, I had the same problem at first.
Attached Thumbnails
Click image for larger version

Name:	Screen Shot 2020-08-03 at 8.01.55 AM.png
Views:	81
Size:	186.1 KB
ID:	738  
__________________
Karl Richcreek
RV-8
N151TK "La Otra Chica"
Flying as of August 14, 2015
TN26
Reply With Quote
  #19  
Old 08-03-2020, 08:27 AM
Scott Hersha Scott Hersha is offline
 
Join Date: Jan 2005
Location: Cincinnati, OH
Posts: 1,558
Default

It might be prudent to NOT fly that airplane again, until you figure this out. I’m trying to visualize the 3 & 4, 1/4” spacers and why/where they are attached. Structural deficiencies in this area is not to be ignored. Original RV4 & 6 elevator and rudder skins were .016 thick. Newer ones are .020.
__________________
SH
RV6/2001 built/sold 2005
RV8 Fastback/2008 built/sold 2015
RV4/bought 2016/sold/2017
RV8/2018 built/Sold(sadly)
RV4/bought 2019 Flying
Cincinnati, OH/KHAO
JAN2020
Reply With Quote
  #20  
Old 08-03-2020, 08:36 AM
FrenchyRV-6A FrenchyRV-6A is offline
 
Join Date: Aug 2017
Location: Colorado Springs, Colorado
Posts: 13
Default Rudder flutter

This after photo shows spacers removed.
Attached Thumbnails
Click image for larger version

Name:	351D95C2-1043-4F65-B8D0-66DE793CFD51.jpg
Views:	235
Size:	223.1 KB
ID:	749  
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 07:12 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.