Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

RV-9 take-off flap settings....again!

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> RV-List
View previous topic :: View next topic  
Author Message
payaremchuk(at)gmail.com
Guest
PostPosted: Wed Jul 23, 2008 1:08 pm    Post subject: RV-9 take-off flap settings....again! Reply with quote
Hi all,

I am training on my newly purchased RV-9a, and my instructor wants me
to do a short-field take-off, clearing an obstacle, ( naturally, the
50-foot tree at the end of the strip!)

I've surfed the list and other resources extensively, and can find no
hard data on this!

Van's nicely responded that they have no data, and each plane/pilot
will have to establish their own procedure!

Surely when John Roncz designed the airfoil for the '9, he could tell
that adding 10 degrees of flap added some lift, and 20 added more
drag,

thus one should use 15 for optimum lift at 62 kts.,

and 5 for best angle of climb at 74 kts, or whatever!!!!

If there is no such data, I guess we'll have to get out the tape
measure and test pilot gear!

thanks

Perry Yaremchuk
C-FINT RV-9a Penticton BC

- The Matronics RV-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?RV-List
Back to top
sbuc(at)hiwaay.net
Guest
PostPosted: Wed Jul 23, 2008 1:42 pm    Post subject: RV-9 take-off flap settings....again! Reply with quote
Perry Yaremchuk wrote:
Quote:


Hi all,

I am training on my newly purchased RV-9a, and my instructor wants me
to do a short-field take-off, clearing an obstacle, ( naturally, the
50-foot tree at the end of the strip!)

Perry, you will most likely find that you won't need any flaps to clear
the 50' tree at the end of the strip....by about 150'......unless the
strip is too short to land on!

Quote:
I've surfed the list and other resources extensively, and can find no
hard data on this!

Probably because RVer's hardly ever have to resort to "short field"
technique. The planes just climb so much better than the typical C172.

Quote:

Van's nicely responded that they have no data, and each plane/pilot
will have to establish their own procedure!

That is true. How can you establish standard procedure when every plane
is different?

Vx is going to be somewhere in the range of 70-115 kts, depending on
what engine you have, what prop you have, pilot technique, how heavy the
plane is, the density altitude, how much you want to scare your
instructor, etc, etc.........

Welcome to the world of experimental aviation! Enjoy your new plane. Smile

Sam Buchanan

- The Matronics RV-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?RV-List
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> RV-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group