Logo
Builders' Plan Gallery  |  Hip Pocket Web Site  |  Contact Forum Admin  |  Contact Global Moderator
October 20, 2018, 11:33:40 PM *
Welcome, Guest. Please login or register.

Login with email, password and session length
 
Home Help Search Login Register
Pages: [1]   Go Down
Print
Author Topic: Wing Fences on Bostonians?  (Read 706 times)
0 Members and 1 Guest are viewing this topic.
dhable
Bronze Member
***

Kudos: 2
Offline Offline

United States United States

Posts: 34

Topic starter


Ignore
« on: February 14, 2015, 09:41:23 AM »

I've seen a few Bostonians with wing fences on the wing tips. Would that extra weight be justified in flight performance? Or do they just add a spiffy look to the plane?
Logged
frash
Gold Member
*****

Kudos: 12
Offline Offline

United States United States

Posts: 439



Ignore
« Reply #1 on: February 14, 2015, 09:52:59 AM »

My reply is slightly controversial but may stimulate constructive discussion, I hope.

We are rapidly approaching the time when all span-limited, non-scale, FF duration events have flat wings with tip plates. In indoor FF duration, OlBill's F1M, LPP, Science Olympiad, and A-6 models are examples.

Yes, your flights times have a good chance of increasing with tip plates. I'm unsure about any other wing fences not at the tips.

Fred Rash
Logged
OZPAF
Palladium Member
********

Kudos: 162
Offline Offline

Australia Australia

Posts: 4,383



Ignore
« Reply #2 on: February 27, 2015, 07:23:15 PM »

I think that's correct. They can effectively be similar to adding wingspan and also eliminate the need for dihedral. They have also been used on quite a few outdoor models - Squirrel, Backstrom "Big Cat" Embryo for example.

I do feel that they need to be more like wing tiplets though rather than fences. I can't prove this but feel they should be close to a wing chord in height to be effective.

John
Logged
Olbill
Titanium Member
*******

Kudos: 56
Offline Offline

United States United States

Posts: 2,362



Ignore
« Reply #3 on: February 27, 2015, 07:47:23 PM »

My reply is slightly controversial but may stimulate constructive discussion, I hope.

We are rapidly approaching the time when all span-limited, non-scale, FF duration events have flat wings with tip plates. In indoor FF duration, OlBill's F1M, LPP, Science Olympiad, and A-6 models are examples.

Yes, your flights times have a good chance of increasing with tip plates. I'm unsure about any other wing fences not at the tips.

Fred Rash

Oops!

Not my A6. Maybe someday.
Logged
leop
Silver Member
****

Kudos: 5
Offline Offline

United States United States

Posts: 150



Ignore
« Reply #4 on: February 27, 2015, 10:03:57 PM »

At this time, the most of the better F1L's and F1D's do not have vertical tip plates but rather dihedral wing tips or (elliptically) curved wings (and stabs for some).  We might see some other tip treatments during this year's flying.

LeoP
Logged
Pages: [1]   Go Up
Print
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!