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Fuselage/wing fairing/fillet

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fklein(at)orcasonline.com
Guest

Posted: Fri Apr 11, 2008 8:51 am Post subject: Fuselage/wing fairing/fillet

Gentlemen,



While trial fitting the wings and setting the angle of incidence, I 

took some time to mock up an enhancement of the fairing in hopes of 

reducing interference drag. The gist is to start w/ the radius of the 

standard fairing just forward of the spar and extend the tangent point 

aft along the fuselage waterline until abeam of the flap trailing edge.



My intention is to cut the supplied fairing just forward of the spar 

and increase the radius aft as shown in the pixs. I plan to have a 

lapped joint at the trailing edge of the wing (not the flap) and secure 

the new fairing aft of the wing to the fuselage, overlapping the flap; 

the fairing forward of the trailing edge of the wing would be glassed 

to the wing in the normal manner.



I anticipate placing the rear pip pin w/ the use of a modified set of 

needle-nosed pliers thru the standard hole.



I have not resolved the issue of trailering as the projection from the 

fuselage will create a conflict when the wings are stored alongside, 

though I am hopeful that the spar carriers on the trailer can be 

relocated to provide clearance and still stay within the overall width 

limitation (8 feet) for highway travel.



Might this be: Much ado about nothing?...a promising 

development?...beyond the pale?



Thoughtful comments would be appreciated...especially from anyone 

qualified to opine about the aerodynamics of such an installation.



thanks, Fred



-- 

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Gilles.Thesee(at)ac-greno
Guest

Posted: Fri Apr 11, 2008 9:10 am Post subject: Fuselage/wing fairing/fillet

Fred Klein a écrit :

 	  Quote: 	
		   Gentlemen,



 While trial fitting the wings and setting the angle of incidence, I 

 took some time to mock up an enhancement of the fairing in hopes of 

 reducing interference drag. The gist is to start w/ the radius of the 

 standard fairing just forward of the spar and extend the tangent point 

 aft along the fuselage waterline until abeam of the flap trailing edge.



 Might this be: Much ado about nothing?...a promising 

 development?...beyond the pale?


	


Fred,



Nice pictures and mockup.

Reducing interference drag is always worth some thought. Some in flight 

data, such as tuft tests prior to any modification might prove valuable.

Also, if drag is in consideration, cooling drag is an area where the 

Europa could really benefit.



Best regards,

-- 

Gilles

http://contrails.free.fr

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fklein(at)orcasonline.com
Guest

Posted: Fri Apr 11, 2008 9:38 am Post subject: Fuselage/wing fairing/fillet

Thanks Gilles...I quite agree w/ you regarding cooling drag...of course, that's a topic for another time, but I hope to deal with it. 



If I go ahead w/ an all-liquid-cooled engine (perhaps this new 1.6 L Gemini 125 turbo diesel), my intention is to borrow Alex Bowman's cowl molds (see matronics-photoshare) which I believe have a very efficient and clean cooling set up.



Fred



PS: But I DO want to get in the air sometime soon!

Visit -  www.EuropaOwners.org

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grahamsingleton(at)btinte
Guest

Posted: Fri Apr 11, 2008 4:09 pm Post subject: Fuselage/wing fairing/fillet

Fred

looks good to me, have a look at the fillet I did 10 years ago, not 

perfect and I think yours will be better.

Ted Gladstone claims 4 kts I think.

Just remember the wing root flexes up and down a couple or three mm. so 

the fairing must be flexible. Not a problem

Graham



Fred Klein wrote:

 	  Quote: 	
		   Gentlemen,

 

 While trial fitting the wings and setting the angle of incidence, I took 

 some time to mock up an enhancement of the fairing in hopes of reducing 

 interference drag. The gist is to start w/ the radius of the standard 

 fairing just forward of the spar and extend the tangent point aft along 

 the fuselage waterline until abeam of the flap trailing edge.

 

 thanks, Fred

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davidjoyce(at)doctors.org
Guest

Posted: Sun Apr 13, 2008 8:11 am Post subject: Fuselage/wing fairing/fillet

Fred, It might be worthwhile for you to talk to Justin Kennedy (

justin(at)systemwise.co.uk ) who designed some very elegant wing fairings for

his plane which are flying and performing well. William Mills was impressed

enough to take some female mouldings from them with a view to making some

for himself (He had not done so at the time of his crash) Those female

moudings are likely to be made available to anyone interested via the Europa

Club. regards, David Joyce, G-XSDJ

---

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grahamsingleton(at)btinte
Guest

Posted: Sun Apr 13, 2008 9:10 am Post subject: Fuselage/wing fairing/fillet

David

I attatched  a pik of Justin's fairings, Ted Gladstone was Justin's 

partner and I understand did the building or most of it

Graham



David Joyce wrote:

[quote] 

 

 Fred, It might be worthwhile for you to talk to Justin Kennedy (

 justin(at)systemwise.co.uk ) who designed some very elegant wing fairings for

 his plane which are flying and performing well. William Mills was impressed

 enough to take some female mouldings from them with a view to making some

 for himself (He had not done so at the time of his crash) Those female

 moudings are likely to be made available to anyone interested via the Europa

 Club. regards, David Joyce, G-XSDJ

 ---

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topglock(at)cox.net
Guest

Posted: Mon Apr 14, 2008 12:11 pm Post subject: Fuselage/wing fairing/fillet

Gilles,

I have taken on the challenge and will be building and experimenting 

with a new cowl.  Don't expect overnight results, though, as this will 

probably be a lengthly process.  I'll post results as they occur, 

probably on my build site.

Jeff - Baby Blue

396 hrs

Gilles Thesee wrote:

 	  Quote: 	

 <Gilles.Thesee(at)ac-grenoble.fr>

 Fred Klein a écrit :

> Gentlemen,

>

> While trial fitting the wings and setting the angle of incidence, I 

> took some time to mock up an enhancement of the fairing in hopes of 

> reducing interference drag. The gist is to start w/ the radius of the 

> standard fairing just forward of the spar and extend the tangent point 

> aft along the fuselage waterline until abeam of the flap trailing edge.

>

> Might this be: Much ado about nothing?...a promising 

> development?...beyond the pale?

 Fred,

 Nice pictures and mockup.

 Reducing interference drag is always worth some thought. Some in flight 

 data, such as tuft tests prior to any modification might prove valuable.

 Also, if drag is in consideration, cooling drag is an area where the 

 Europa could really benefit.

 Best regards,

- The Matronics Europa-List Email Forum -

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topglock(at)cox.net
Guest

Posted: Mon Apr 14, 2008 12:46 pm Post subject: Fuselage/wing fairing/fillet

Nice looking layout, Fred.  Now, if you'd stop mucking around with all 

those extras, you'd be flying... 



Jeff - Baby Blue

396 hrs



Fred Klein wrote:

 	  Quote: 	
		   Gentlemen,

 

 While trial fitting the wings and setting the angle of incidence, I took 

 some time to mock up an enhancement of the fairing in hopes of reducing 

 interference drag. The gist is to start w/ the radius of the standard 

 fairing just forward of the spar and extend the tangent point aft along 

 the fuselage waterline until abeam of the flap trailing edge.

 

 My intention is to cut the supplied fairing just forward of the spar and 

 increase the radius aft as shown in the pixs. I plan to have a lapped 

 joint at the trailing edge of the wing (not the flap) and secure the new 

 fairing aft of the wing to the fuselage, overlapping the flap; the 

 fairing forward of the trailing edge of the wing would be glassed to the 

 wing in the normal manner.

 

 I anticipate placing the rear pip pin w/ the use of a modified set of 

 needle-nosed pliers thru the standard hole.

 

 I have not resolved the issue of trailering as the projection from the 

 fuselage will create a conflict when the wings are stored alongside, 

 though I am hopeful that the spar carriers on the trailer can be 

 relocated to provide clearance and still stay within the overall width 

 limitation (8 feet) for highway travel.

 

 Might this be: Much ado about nothing?...a promising 

 development?...beyond the pale?

 

 Thoughtful comments would be appreciated...especially from anyone 

 qualified to opine about the aerodynamics of such an installation.

 

 thanks, Fred

 

 

 

 

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 Checked by AVG.

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