That is essentially what my Mustang 2 has. The plane was designed with stub wings similar to the KR and a very long (I think about 10') flap. The flap extends a few feet out each side of the fusalage and is essentially a belly board/split flap under the fusalage. It is very effective for both additional lift and for drag. Works very well and I would certainly think it would work great on a KR also.
Here are some pictures showing some different Mustang 2s with the flap shown. http://www.mustangaero.com/images/Album/Mustang%20II/Aircraft/Ariosto%20N12JA.jpg http://www.mustangaero.com/images/Album/Mustang%20II/Aircraft/c-gfrh_1.jpg http://www.mustangaero.com/images/Album/Mustang%20II/Aircraft/Dixon%20N91MD.jpg http://www.mustangaero.com/images/Album/Mustang%20II/Aircraft/Koelzer%20M-II.jpg http://www.mustangaero.com/images/Album/Mustang%20II/Aircraft/Porter%20N632JS.jpg The Chinese Nanchang has the same arrangement also: http://getcustomart.wordpress.com/2013/12/02/getcustomart-com-delivers-custom-nose-are-for-vintage-1969-nanchang-cj-6-chinese-trainer/ -------- Original Message -------- Subject: Re: KR> flaps v belly board From: Dene via KRnet <krnet at list.krnet.org> List-Post: krnet@list.krnet.org Date: Mon, September 15, 2014 10:06 am To: "'Flesner'" <flesner at frontier.com>, "'KRnet'" <krnet at list.krnet.org> Hi guys I have not got to that stage yet but has anybody ever thought of joining the two flaps to each other via a glass/carbon composite layup under the belly of the plane. That would create both a belly board and flaps with the benefits of both. Stiffness of the bellyboard might be an issue as the bellyboard will not be hinged and therefore un supported across its length. Thoughts? Dene Collett -----Original Message----- From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Flesner via KRnet Sent: Monday, September 15, 2014 14:39 To: KRnet Subject: Re: KR> flaps v belly board >Having read the ease of the Belly board construction I am wondering >if the complexity of installing flaps is worth while ? I am at the >point of finishing the stubs and starting flaps. Knowing what you >know about belly board vs flaps would you guys install flaps? Is the >additional low speed lift significant ? ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ I'm guessing the standard flaps on a KR2 do not generate a great deal of lift or add significant drag on landing. Any drag on landing is good on a KR. No reason you can't have both. I had given thought to flap that, with additional movement of the actuator, deployed a speed brake. If your KR complete is less than 650 pounds, I'd go with just a speed brake. IMHO........ Larry Flesner _______________________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options _______________________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
